235 Solidity Jobs

Position : Lead Software Engineer ✅ Key Responsibilities 🚀 Architecture & System Design · Define scalable, secure, and modular architectures. · Implement high-availability patterns (circuit breakers, autoscaling, load balancing). · Enforce OWASP best practices, role-based access, and GDPR/PIPL compliance. 💻 Full-Stack Development · Oversee React Native & React.js codebases; mentor on state management (Redux/MobX). · Architect backend services with Node.js/Express; manage real-time layers (WebSocket, Socket.io). · Integrate third-party SDKs (streaming, ads, offerwalls, blockchain). 📈 DevOps & Reliability · Own CI/CD pipelines and Infrastructure-as-Code (Terraform/Kubernetes). · Drive observability (Grafana, Prometheus, ELK); implement SLOs and alerts. · Conduct load testing, capacity planning, and performance optimization. 👥 Team Leadership & Delivery · Mentor 5–10 engineers, lead sprint planning, code reviews, and Agile ceremonies. · Collaborate with cross-functional teams to translate roadmaps into deliverables. · Ensure on-time feature delivery and manage risk logs. 🔍 Innovation & Continuous Improvement · Evaluate emerging tech (e.g., Layer-2 blockchain, edge computing). · Improve development velocity through tools (linters, static analysis) and process optimization. 📌 What You’ll Need · 5+ years in full-stack development, 2+ years in a lead role · Proficient in: React.js, React Native, Node.js, Express, AWS, Kubernetes · Strong grasp of database systems (PostgreSQL, Redis, MongoDB) · Excellent communication and problem-solving skills · Startup or gaming experience a bonus 🎯 Bonus Skills · Blockchain (Solidity, smart contracts), streaming protocols (RTMP/HLS) · Experience with analytics tools (Redshift, Metabase, Looker) · Prior exposure to monetization SDKs (PubScale, AdX)

**Immediate joining ( WFH ) InfraSingularity aims to revolutionize the Web3 ecosystem as a pioneering investor and builder. Our long-term vision is to establish ourselves as the first-of-its-kind in this domain, spearheading the investment and infrastructure development for top web3 protocols. At IS, we recognize the immense potential of web3 technologies to reshape industries and empower individuals. By investing in top web3 protocols, we aim to fuel their growth and support their journey towards decentralization. Additionally, our plan to actively build infrastructure with these protocols sets us apart, ensuring that they have the necessary foundations to operate in a decentralized manner effectively. We embrace collaboration and partnership as key drivers of success. By working alongside esteemed web3 VCs like WAGMI and more, we can leverage their expertise and collective insights to maximize our impact. Together, we are shaping the future of the Web3 ecosystem, co-investing, and co-building infrastructure that accelerates the adoption and growth of decentralized technologies. Together with our portfolio of top web3 protocols (Lava, Sei, and Anoma) and our collaborative partnerships with top protocols (EigenLayer, Avail, PolyMesh, and Connext), we are creating a transformative impact on industries, society, and the global economy. Join us on this groundbreaking journey as we reshape the future of finance, governance, and technology. About the Role We are looking for a Senior Site Reliability Engineer (SRE) to take ownership of our multi-cloud blockchain infrastructure and validator node operations. This role is critical in ensuring high performance, availability, and resilience across a range of L1/L2 blockchain protocols. If you're passionate about infrastructure automation, system reliability, and emerging Web3 technologies, we’d love to talk. What You’ll Do Own and operate validator nodes across multiple blockchain networks, ensuring uptime, security, and cost-efficiency. Architect, deploy, and maintain infrastructure on AWS, GCP, and bare-metal for protocol scalability and performance. Implement Kubernetes-native tooling (Helm, FluxCD, Prometheus, Thanos) to manage deployments and observability. Collaborate with our Protocol R&D team to onboard new blockchains and participate in testnets, mainnets, and governance. Ensure secure infrastructure with best-in-class secrets management (HashiCorp Vault, KMS) and incident response protocols. Contribute to a robust monitoring and alerting stack to detect anomalies, performance drops, or protocol-level issues. Act as a bridge between software, protocol, and product teams to communicate infra constraints or deployment risks clearly. Continuously improve deployment pipelines using Terraform, Terragrunt, GitOps practices. Participate in on-call rotations and incident retrospectives, driving post-mortem analysis and long-term fixes. Our Stack Cloud & Infra: AWS, GCP, bare-metal Containerization: Kubernetes, Helm, FluxCD IaC: Terraform, Terragrunt Monitoring: Prometheus, Thanos, Grafana, Loki Secrets & Security: HashiCorp Vault, AWS KMS Languages: Go, Bash, Python, Typescript Blockchain: Ethereum, Polygon, Cosmos, Solana, Foundry, OpenZeppelin What You Bring 4+ years of experience in SRE/DevOps/Infra roles—ideally within FinTech, Cloud, or high-reliability environments. Proven expertise managing Kubernetes in production at scale. Strong hands-on experience with Terraform, Helm, GitOps workflows. Deep understanding of system reliability, incident management, fault tolerance, and monitoring best practices. Proficiency with Prometheus and PromQL for custom dashboards, metrics, and alerting. Experience operating secure infrastructure and implementing SOC2/ISO27001-aligned practices. Solid scripting in Bash, Python, or Go. Clear and confident communicator—capable of interfacing with both technical and non-technical stakeholders. Nice-to-Have First-hand experience in Web3/blockchain/crypto environments. Understanding of staking, validator economics, slashing conditions, or L1/L2 governance mechanisms. Exposure to smart contract deployments or working with Solidity, Foundry, or similar toolchains. Experience with compliance-heavy or security-certified environments (SOC2, ISO 27001, HIPAA). Why Join Us? Work at the bleeding edge of Web3 infrastructure and validator tech. Join a fast-moving team that values ownership, performance, and reliability. Collaborate with protocol engineers, researchers, and crypto-native teams. Get exposure to some of the most interesting blockchain ecosystems in the world.

📍 Location: Onsite (Vadodara, Gujarat) 💼 Job Type: Full-time We are looking for a Solidity Developer with hands-on experience in building complex MLM staking contracts, DeFi protocols, NFT marketplaces, Launchpads, and full-fledged DApps. If you're passionate about Web3 and can integrate smart contracts into modern frontend frameworks like React and Next.js – we want to talk to you. --- 🛠️ Key Responsibilities Design, develop, and deploy Solidity smart contracts for MLM, staking, DeFi, and NFT platforms. Collaborate with frontend engineers to integrate smart contracts with React/Next.js apps using Ethers.js or Web3.js. Write and execute tests using Hardhat or Truffle to ensure security and functionality. Optimize smart contract gas usage and follow best practices in secure smart contract development. Participate in full DApp development lifecycle – from ideation to deployment. Work with Node.js (Typescript) web3 backend tasks when required. (Bonus) Build and deploy Telegram Mini Apps and web UIs using React. --- 🔍 Requirements 2+ years of experience in Solidity and Ethereum development. Strong understanding of MLM smart contracts, ICOs, staking, DeFi protocols, and NFT standards (ERC-721, ERC-1155). Hands-on experience with Hardhat or Truffle, and Ethers.js or Web3.js with Typescript. Ability to integrate smart contracts into the frontend and debug Web3 interactions using web3.js/ethers.js/wagmi/reown --- ⭐ Preferred (Not Mandatory) Experience with Telegram Mini Apps development. Knowledge of frontend development using React/NextJs, and responsive DApp UIs.

Job Title: Blockchain Developer Location: Pan India Experience: 6+ Years Notice Period: Immediate or up to 30 Days Job Description We are looking for a highly skilled and experienced Blockchain Developer to join our growing team. The ideal candidate will have a strong background in smart contract development, with hands-on expertise in Ethereum standards like ERC-721A , and experience deploying secure and scalable blockchain solutions. Key Responsibilities Design, develop, test, and deploy smart contracts primarily using Solidity. Implement and optimize ERC-721A logic for efficient NFT transactions. Work closely with frontend/backend teams to integrate smart contract functionality. Manage smart contract deployment on Ethereum or EVM-compatible networks. Conduct code reviews and ensure security best practices in smart contract development. Troubleshoot and resolve issues related to blockchain applications. Stay updated with emerging trends in blockchain and NFT standards. Required Skills Strong programming experience in Solidity, Web3.js, or Ethers.js. In-depth knowledge of Ethereum and token standards like ERC-20, ERC-721, and especially ERC-721A. Experience with smart contract deployment tools like Hardhat, Truffle, or Remix. Good understanding of blockchain architecture, consensus algorithms, and DApp development. Familiarity with gas optimization and smart contract security vulnerabilities (e.g., reentrancy, front-running, overflow). Experience with version control (Git) and agile development practices. Preferred Qualifications Experience in integrating smart contracts with Web3 frontends. Exposure to other blockchain platforms (e.g., Polygon, Binance Smart Chain, Solana) is a plus. Certifications in Blockchain Technology (optional but desirable).

We are looking for a Solidity Developer with hands-on experience in building complex MLM staking contracts, DeFi protocols, NFT marketplaces, Launchpads, and full-fledged DApps. If you're passionate about Web3 and can integrate smart contracts into modern frontend frameworks like React and Next.js – we want to talk to you. --- 🛠️ Key Responsibilities Design, develop, and deploy Solidity smart contracts for MLM, staking, DeFi, and NFT platforms. Collaborate with frontend engineers to integrate smart contracts with React/Next.js apps using Ethers.js or Web3.js. Write and execute tests using Hardhat or Truffle to ensure security and functionality. Optimize smart contract gas usage and follow best practices in secure smart contract development. Participate in full DApp development lifecycle – from ideation to deployment. Work with Node.js (Typescript) web3 backend tasks when required. (Bonus) Build and deploy Telegram Mini Apps and web UIs using React. --- 🔍 Requirements 2+ years of experience in Solidity and Ethereum development. Strong understanding of MLM smart contracts, ICOs, staking, DeFi protocols, and NFT standards (ERC-721, ERC-1155). Hands-on experience with Hardhat or Truffle, and Ethers.js or Web3.js with Typescript. Ability to integrate smart contracts into the frontend and debug Web3 interactions using web3.js/ethers.js/wagmi/reown --- ⭐ Preferred (Not Mandatory) Experience with Telegram Mini Apps development. Knowledge of frontend development using React/NextJs, and responsive DApp UIs. --- 📍 Location: Onsite (Vadodara, Gujarat) 💼 Job Type: Full-time 💰 Compensation: Competitive, based on experience

We are looking for a skilled Rust Developer with strong experience in blockchain development on the Solana platform. In this role, you will design, develop, and maintain on-chain programs using Rust, and integrate smart contracts with frontend or backend systems.. This opportunity is ideal for developers passionate about decentralized technologies, Web3, and cutting-edge blockchain applications.. Required Skills. 5 to 8 years of experience in software development.. Strong expertise in Rust programming.. Proven experience with Solana blockchain and the Anchor framework.. Understanding of SPL token standards.. Familiarity with Solana APIs and SDKs for integrating smart contracts.. Experience in React.js or Java is a plus.. Exposure to cross-chain protocols and other blockchain ecosystems.. Background in cryptography or distributed systems is an added advantage.. Show more Show less

Design & dev blockchain solutions-Hyperledger fabric Build & maintain smart contracts & apps. Conduct thorough testing & debugging Document dev processes, code changes, & application config. MEAN_MERN Stack cryptographic principles & consensus algo.

Developer Relations Manager About HeLa Labs HeLa Labs (https://www.helalabs.com) is a dynamic team of innovative developers, engineers, and designers dedicated to building transformative technology that drives the adoption of Web3. Our goal is to build a secure layer 1 blockchain for real-world adoption. We’re looking for a proactive and creative Developer Relations Manager to Build, nurture, and expand a vibrant developer community in India. What Will You Do at HeLa Labs? Build, nurture, and expand a vibrant developer community in India. Organize and lead meetups, hackathons, AMAs, workshops, and other community events (in-person and online). Serve as a visible and approachable representative of the ecosystem in India. Onboard new developers and provide technical guidance on using our blockchain tools, SDKs, and infrastructure. Collect feedback from developers to help improve product, tooling, and documentation. Actively engage on developer channels such as Discord, Telegram, and GitHub. Collaborate with local blockchain projects, startups, universities, and developer groups. Support strategic partners with technical onboarding and community alignment. Create and deliver technical tutorials, workshops, and presentations. Write technical blog posts, guides, and developer documentation in collaboration with the Singapore core team. Work closely with the core engineering and marketing teams in Singapore to align on product messaging, community goals, and ecosystem strategy. Share regular updates and insights from the Indian ecosystem with the core team. Our Ideal Candidates Would Have 3+ years experience in software development, ideally with exposure to blockchain technologies (e.g., Solidity, Rust, Web3.js, EVM chains). Previous experience in community building, developer advocacy, or education preferred. Excellent communication and presentation skills. Strong organizational and project management skills. Passion for blockchain, open-source development, and decentralized communities. Based in India with flexibility to collaborate with a Singapore-based team (some overlap in working hours required) What else are waiting for you? Competitive salary 100% remote and flexible Be a part of the future of financial technology by doing something meaningful. Great career development opportunities in a growing company Passionate and collaborative team Family-like environment Up-level your technical skills and capital market knowledge Multi-cultural environment Ready to make your mark in Web3? Join HeLa Labs today. What you do now defines the future you create.

We're Hiring: QA Engineer Company: Bingo Singapore Pte. Ltd. Location: On-site Experience: 2+ years in QA (Web3/Blockchain preferred) About the Role: We’re building cutting-edge Node.js applications integrated with blockchain (Ethereum/Smart Contracts/Web3), and we need a meticulous QA Engineer to ensure flawless functionality, security, and performance. You’ll test backend APIs, smart contracts, and decentralized systems while collaborating with Node.js and blockchain developers. Key Responsibilities: ✔ Blockchain-Specific Testing: Test smart contracts (Solidity/Rust) for vulnerabilities (reentrancy, overflow) using tools like Hardhat, Truffle, or Foundry . Validate Web3.js/ethers.js integrations with Node.js backends. Verify wallet connections (MetaMask, WalletConnect) and transaction flows . ✔ Node.js Backend Testing: Test REST/GraphQL APIs (Postman, Supertest) built with Express/NestJS. Automate API tests (using Mocha/Chai, Jest, or Karate ). Monitor WebSocket connections for real-time blockchain events. ✔ Security & Performance: Conduct penetration testing for Node.js APIs (OWASP Top 10). Load-test blockchain interactions (e.g., high TPS scenarios with JMeter). Audit data consistency between on-chain and off-chain (DB) systems. ✔ Tools & Collaboration: Use GitHub Actions/GitLab CI for QA pipelines. Document bugs in JIRA/Linear with reproducible steps. Work with DevOps to test containerized (Docker) deployments. Skills & Requirements: ✅ Must-Have: 2+ years in QA for Node.js/backend systems . Hands-on experience with blockchain testing (Smart Contracts, Web3, RPC nodes). Proficiency in API testing (Postman, Swagger) and SQL/NoSQL validation. Familiarity with CI/CD and version control (Git). ✅ Nice-to-Have: Knowledge of security tools (Slither, MythX) for smart contracts. Experience with performance testing (k6, Locust). Basic scripting in JavaScript/Python . Job Types: Full-time, Permanent Pay: From ₹15,000.00 per month Schedule: Monday to Friday Morning shift Weekend availability Experience: QA/QC: 2 years (Required) Language: English (Preferred) Work Location: In person

Smacoteq is a Blockchain platform to digitalize trade documents and to tokenize trade assets to facilitate trade finance. Smacoteq’s solution revolutionizes international maritime trade through blockchain technology, focusing on replacing traditional, paper-based trade processes with digital solutions. The company prioritizes critical documents such as Bills of Lading, aiming to reduce costs, minimize fraud risks, enhance security, and trade finance digitalization. About the Role We are seeking a passionate and entrepreneurial Blockchain Full Stack Developer to join our dynamic startup. This is a unique opportunity to work at the forefront of blockchain innovation, contributing to a decentralized platform designed to revolutionize the maritime and trade finance industry. If you're a self-starter with a strong technical foundation and a desire to work with a dynamic team, we want to hear from you! Key Responsibilities Blockchain Development: Design, develop, and deploy secure and efficient smart contracts on blockchain platforms. Frontend Development: Build and maintain user interfaces using Next.js, React.js, and other frameworks. Backend Development: Develop robust backend systems using Node.js and other technologies in the MERN stack. Integration: Seamlessly integrate smart contracts with frontend and backend applications. Collaboration: Work closely with the product, design, and business teams to create end-to-end features that solve real-world problems. Entrepreneurial Contribution: Bring innovative ideas and an entrepreneurial mindset to shape the product and its growth trajectory. Requirements Technical Skills: Proven experience with blockchain development, including smart contracts (Solidity, Ethereum, or similar). Proficiency in Next.js, React.js, Node.js, and the MERN stack. Familiarity with decentralized storage solutions and web3 libraries. Experience: 5+ years of full stack Blockchain development Entrepreneurial Mindset: Demonstrated ability to work independently, think strategically, and innovate. Problem-Solving Skills: Strong analytical thinking and the ability to troubleshoot complex issues. Communication: Excellent written and verbal communication skills to collaborate in a remote-first environment. What We Offer Engagement with Equity in the France-based company. Exposure to the global market and experience working in a diverse team. Impact: Contribute to building solutions that address real-world challenges in trade finance and maritime logistics. Flexibility: Work remotely with a global team that is passionate about blockchain innovation and disrupting the maritime industry. Show more Show less

We are hiring a Full Stack Blockchain Developer with at least 2 years of hands-on experience. The ideal candidate is someone who’s confident in Solidity , smart contract development, and has actively contributed to blockchain projects. If you've worked on networks like Solana , Polygon , or other emerging chains — that's a big plus. You’ll be joining a fast-moving team building decentralized applications and blockchain-based solutions. Strong communication skills and a demonstrable portfolio are essential. Key Responsibilities: Develop, test, and deploy secure smart contracts using Solidity . Build and maintain full stack dApps using technologies like React.js , Node.js , and Web3.js/Ethers.js . Integrate smart contracts with web platforms and handle backend logic and APIs. Optimize and troubleshoot blockchain node interactions and off-chain components. Write clean, modular, and well-documented code. Collaborate with designers, frontend/backend teams, and project managers. Keep up with the latest trends in Web3 and blockchain ecosystems. Required Skills & Qualifications: Minimum 2 years of experience as a full stack developer with blockchain expertise. Proficient in Solidity and Ethereum standards (ERC-20, ERC-721, etc.). Experience working on live blockchain projects (portfolio/GitHub links are mandatory). Hands-on experience with Ethereum , Polygon , or Solana (preferred). Familiarity with tools like Hardhat , Truffle , Remix , and wallets like MetaMask . Good understanding of Web3.js , Ethers.js , or Moralis SDK . Skilled in JavaScript , React , Node.js , and RESTful APIs. Strong debugging and problem-solving skills. Must have excellent communication skills (written and verbal). Preferred Qualifications: Experience with Solana , BNB Chain , Avalanche , or other L1/L2 chains. Knowledge of decentralized storage (IPFS), subgraphs (The Graph), and oracle services. Familiarity with DevOps, Docker, or CI/CD pipelines. Contributions to open-source or Web3 hackathons. Job Types: Full-time, Part-time, Permanent Pay: ₹20,000.00 - ₹35,000.00 per month Supplemental Pay: Overtime pay Performance bonus Experience: blockchain development: 2 years (Required) Location: Mohali, Punjab (Required) Work Location: In person

Blockchain & dApp Developer FullTime & Remote We are looking for a highly skilled Blockchain & dApp developer to join our team and drive the development of our next-generation financial technology products. As a Blockchain & dApp Developer, you will play a pivotal role in the design, development, and deployment of innovative blockchain solutions, working on projects that are integral to our mission, including the architecturing and development of decentralised finance (DeFi) platforms, smart contract writing, AA smart wallets, and the architecture of cross-chain applications. Thus, the ideal candidate will have a strong background in smart contract development and decentralised application (dApp) development, focusing on DeFi platforms and cross-chain integration. Key Responsibilities: ● Smart Contract Development: Write, test, and deploy secure smart contracts in Solidity, primarily for the Ethereum network, ensuring seamless cross-chain compatibility. ● dApp Development: Lead the design and development of decentralised applications (dApps) on Ethereum, Binance Smart Chain, and Solana. ● DeFi Solutions: Architect and develop innovative DeFi and synthetic financial solutions, integrating them with existing protocols. ● Security and Performance: Maintain high standards of blockchain security and performance throughout the development lifecycle. ● Innovation Leadership: Collaborate with cross-functional teams to brainstorm and develop new features, focusing on both user experience and technical implementation. ● Independent Development: Take ownership of multi-chain application architecture and development from day one, delivering high-quality solutions with minimal supervision. ● Secondary Responsibilities: Contribute to the development of blockchain modules using Cosmos SDK where necessary, while focusing primarily on Ethereum-based solutions. Qualifications: ● Minimum of 3 years of experience in blockchain development, with a solid track record of writing verified, secure smart contracts in Solidity currently in use. ● Proven and extensive hands-on experience in developing and deploying dApps on the Ethereum Network and other key blockchains such as Binance and Solana. ● Multi-chain Applications: Ability to independently architect and develop multi-chain ● Strong background in software security and bug hunting, with a focus on blockchain technologies. ● Proficiency in Solidity is essential. Proficiencies in Go, Rust, and C++ are an added advantage. ● Extensive experience in Ethereum and familiarity with other key blockchains like Binance, Solana, and Cosmos. ● Proven track record in developing and deploying dApps and DeFi platforms. ● Strong understanding of blockchain security best practices and data protection. ● Demonstrated ability to lead complex projects from conception through to completion. ● Demonstrable contributions to Web3 open-source projects. ● Advanced analytical skills with the ability to solve complex technical challenges in blockchain development. Essential Proficiencies: ● Solidity ● Vyper ● JavaScript, react.js, typescript ● web3.js library Soft Skills: ● Communication: Excellent communication skills, with the ability to clearly articulate complex technical concepts to a diverse audience. ● Team Collaboration: Strong collaborative skills, with a track record of successfully working in cross-functional teams. ● Problem-Solving: A proactive approach to problem-solving, with the ability to navigate and resolve technical issues effectively. Why You Should Join Us. ● Innovation-Driven Culture: Be part of a team that values creativity, innovation, and continuous improvement. ● Career Growth: Opportunities for professional development, including certifications, conferences, and potential for career advancement. ● Global Impact: An opportunity to impact the global space ● Benefits: ● Competitive pay, bonus, and benefit package tailored to your skills and experience. ● Remote work flexibility with a supportive and collaborative work environment.● Access to learning and development resources to enhance your skills and career. ● It offers a remarkable chance to work on projects that have a tangible impact on global financial systems and wealth creation. ● We are committed to building a diverse and inclusive team that reflects the global community we serve. ● A dynamic and innovative work environment where you can make a real impact on the future of financial technology. ● Opportunities for career growth and development within a rapidly expanding global company. Industry: ● Financial Technology Services Employment Type: ● Full-time ● Remote About Us: UGG International is a global leader in fintech innovation, dedicated to building a future where wealth is accessible to all. Our mission is to leverage cutting-edge technologies such as blockchain and artificial intelligence to create financial solutions that drive generational wealth across the globe. The Ultainfinity Blockchain, our flagship project, exemplifies our commitment to excellence, being an application-specific blockchain built on the Cosmos SDK designed to lead the industry in security and innovation. Show more Show less

Developer Community Manager About HeLa Labs HeLa Labs (https://www.helalabs.com) is a dynamic team of innovative developers, engineers, and designers dedicated to building transformative technology that drives the adoption of Web3. Our goal is to build a secure layer 1 blockchain for real-world adoption. We’re looking for a proactive and creative Developer Community Manager to Build, nurture, and expand a vibrant developer community in India. What Will You Do At HeLa Labs? Build, nurture, and expand a vibrant developer community in India. Organize and lead meetups, hackathons, AMAs, workshops, and other community events (in-person and online). Serve as a visible and approachable representative of the ecosystem in India. Onboard new developers and provide technical guidance on using our blockchain tools, SDKs, and infrastructure. Collect feedback from developers to help improve product, tooling, and documentation. Actively engage on developer channels such as Discord, Telegram, and GitHub. Collaborate with local blockchain projects, startups, universities, and developer groups. Support strategic partners with technical onboarding and community alignment. Create and deliver technical tutorials, workshops, and presentations. Write technical blog posts, guides, and developer documentation in collaboration with the Singapore core team. Work closely with the core engineering and marketing teams in Singapore to align on product messaging, community goals, and ecosystem strategy. Share regular updates and insights from the Indian ecosystem with the core team. Our Ideal Candidates Would Have 3+ years experience in software development, ideally with exposure to blockchain technologies (e.g., Solidity, Rust, Web3.js, EVM chains). Previous experience in community building, developer advocacy, or education preferred. Excellent communication and presentation skills. Strong organizational and project management skills. Passion for blockchain, open-source development, and decentralized communities. Based in India with flexibility to collaborate with a Singapore-based team (some overlap in working hours required) What else are waiting for you? Competitive salary 100% remote and flexible Be a part of the future of financial technology by doing something meaningful. Great career development opportunities in a growing company Passionate and collaborative team Family-like environment Up-level your technical skills and capital market knowledge Multi-cultural environment Ready to make your mark in Web3? Join HeLa Labs today. What you do now defines the future you create. Show more Show less

About KeyValue KeyValue is a trusted product engineering partner for Start Ups & Scale Ups - unlocking their passion, developing ideas, and creating abundant value to all stakeholders in the ecosystem. We have ideated, conceived, strategized and built some of the globe’s most innovative Fintech, Payments, Financial Services, Digital Commerce, Madtech, Edtech, Socialtech, Logistics, High Technology, Blockchain, Crypto, NFT and Healthcare companies, helping them conceive, scale, pivot, and enhance their businesses. KeyValue’s mission is to be the world’s most trusted product development hub – delivering high-value outcomes for start-ups & scale-ups – with a talented skilled team – in a thriving and inclusive culture. Our inclusive culture is engaging & experiential, creating an environment to learn & collaborate with freedom to think, create, explore, grow and thrive. An ownership mindset with growth orientation forms the bedrock of exceptional client success! We are looking for an experienced and passionate Blockchain Engineer with 3+ years of experience to join our team. The ideal candidate is highly proactive, a problem-solver, and has a strong interest in learning and implementing AI and ML alongside blockchain technologies. What you will do: Design, develop, and maintain blockchain-based applications and smart contracts. Implement security protocols, cryptography, and consensus algorithms. Collaborate with cross-functional teams to integrate blockchain solutions into existing systems. Optimise blockchain-based systems for performance, scalability, and reliability. Conduct research to explore and propose improvements to existing blockchain frameworks. Stay updated on the latest blockchain trends and technologies. What makes you a great fit: Bachelor’s degree in Computer Science, Information Technology, or a related field. 3+ years of experience in blockchain development, including hands-on experience with frameworks like Ethereum, Hyperledger, or Solana. Proficiency in programming languages such as Solidity, Rust, JavaScript, or Python. Experience with Web3.js, Express.js, Truffle, or other blockchain development tools. Strong understanding of smart contracts, consensus algorithms, and decentralised applications (dApps). Knowledge of cryptography, security protocols, and data structures. Excellent problem-solving skills and a proactive approach to challenges. Strong written and verbal communication skills for team collaboration and technical documentation. Familiarity with machine learning and AI concepts, and a willingness to integrate these technologies with blockchain solutions. Knowledge of cloud platforms like AWS, Azure, or GCP for deploying blockchain solutions. Experience in developing or integrating NFTs, DeFi, or other blockchain-based use cases. At KeyValue, you’ll be part of a dynamic team working on innovative projects that leverage cutting-edge blockchain technology. We provide an environment that encourages creativity, growth, and collaboration, helping you stay at the forefront of tech advancements. Show more Show less

We are seeking a MERN Stack Developer who also brings hands-on experience in blockchain development. You will be responsible for developing scalable web applications and integrating decentralized technologies such as smart contracts, NFTs, or blockchain protocols. Job Title : MERN Stack Developer (With Blockchain Experience) Experience : 1-3 years Job Location : Madurai. Skills : MongoDB, React(js), Express(js),Node(js), Solidity, Solanum, Smart contract, Ethereum, Binance Smart chain. Requirements: Proficiency in MERN Stack (MongoDB, Express.js, React.js, Node.js) Experience with Ethereum or other blockchain platforms (e.g., Solana, Polygon, Binance Smart Chain) Familiarity with smart contract development using Solidity, Hardhat, or Truffle Experience with Web3.js, Ethers.js, or similar libraries Contributions to open-source or blockchain projects is a plus Strong communication and collaboration abilities. Stay updated on emerging technologies, especially in the Web3 ecosystem. Roles and Responsibilities: Design and develop full-stack web applications using MongoDB, Express.js, React.js, and Node.js. Integrate blockchain components into web platforms (e.g., wallets, smart contracts, token interfaces). Collaborate with front-end and blockchain engineers to develop end-to-end features. Write clean, modular, and reusable code while adhering to best practices in software development. Work closely with UX/UI designers to create user-friendly interfaces. Implement secure, scalable, and efficient back-end services. Translating designs and wireframes into high-quality code. Troubleshoot, debug, and upgrade existing systems to improve performance and user experience. Participate in code reviews and contribute to a culture of continuous improvement. Understand client requirements and functional specifications. Learning and implementing web3 and blockchain technology. What we offer: Competitive salary and benefits package. Opportunities for professional growth and career advancement Flexible work arrangements and a focus on work-life balance Job Type: Full-time Pay: ₹12,000.00 - ₹50,000.00 per month Experience: Blockchain: 1 year (Preferred) Location: Narimedu, Madurai, Tamil Nadu (Preferred) Work Location: In person

* Design and implement blockchain-based applications using QuickNode, Web3Auth, and Python or Node.js. * Develop and maintain smart contracts and decentralized applications (dApps) Flexi working Work from home Leave encashment Job/soft skill training Disability inclusion hiring program

Experience Required: 3+ YearsLocation: Gurgaon, India About Tiamonds: Tiamonds is the world’s largest diamond marketplace, expanding its reach to include other real-world assets like gold, silver, sapphires, real estate, and financial instruments. Utilizing cutting-edge Web3 technology, Tiamonds empowers investors with freedom of ownership, offering a secure and transparent ecosystem. With a mission to redefine asset ownership, Tiamonds is paving the way for a more inclusive and accessible financial future. Role Overview: We are seeking a passionate and experienced Senior Full-Stack Developer to join our growing technology team. The ideal candidate will drive the development and integration of secure, scalable backend features and blockchain-based applications that power our next-generation financial platform . Key Responsibilities: Research & Innovation Explore and evaluate new blockchain technologies, including Ethereum, Cardano, and Solana. Conduct R&D for NFT integrations, asset tokenization, and proof-of-concept (POC) initiatives lending and borrowing. Backend & Smart Contract Development Design, build, and maintain secure smart contracts and backend services. Implement features such as token vesting (e.g., TOTO), staking, and reward models. API Development & Integration Ensure smooth integration between backend and frontend interfaces, as well as with Web3 applications, and wallets like MetaMask. Blockchain Integration & Feature Development Lead the implementation of blockchain-based features, including NFT functionalities and multi-chain support. Build smart contract-based logic for token ownership and staking mechanisms across Ethereum, Cardano, and other chains. Scalability & Optimization Cross-Functional Collaboration Requirements: Bachelor’s or Master’s in Computer Science, Software Engineering, or a related technical discipline. 3+ years of professional experience in backend development with a focus on blockchain technology. Experience with multi-chain blockchain integration and interoperability protocols. Familiarity with NFT standards such as ERC-721 and ERC-1155 , and a solid understanding of tokenomics . Strong knowledge of API security protocols, best practices, and implementation of secure authentication and authorization mechanisms. Proficient in Solidity, Web3.js, Node.js, and backend API development. Practical experience with smart contract development, deployment, and gas optimization. Strong understanding of blockchain platforms such as Ethereum, Cardano, Solana, or others. Familiarity with integrating blockchain wallets and decentralized applications (dApps). Strong interpersonal skills and ability to work in a fast-paced, collaborative environment. What We Offer: An opportunity to work at a regulated and pioneering Web3 company. A dynamic, impact-driven work environment with global exposure. Room for professional growth, learning, and leadership. Job Type: Full-time Pay: Up to ₹2,500,000.00 per year Schedule: Day shift Monday to Friday Work Location: In person

We are seeking a dynamic and experienced Technical Trainer to join our engineering department. The ideal candidate will be responsible for designing and delivering technical training sessions to B.Tech students across various domains, ensuring they are industry-ready and equipped with practical, job-oriented skills. Role & Responsibility To train the students in new age technology (computer Science Engineering) to bridge the industry & academia gap leading to increase in the employability of the students. Knowledge Proven experience in devising technical training programs to UG/PG Engineering students in Higher Education Institutions To be abreast in latest software as per Industry standard & having knowledge of modern training techniques and tools to deliver the technical subjects To prepare training material (presentations, worksheets etc.) To execute training sessions, webinars, workshops for students To determine overall effectiveness of programs and make improvements Technical Skills (Subject Areas of delivering Training with Practical Approach) 1. Core Programming Skills Languages: C, Python, Java, C++, JavaScript 2. Web Development Frontend: HTML, CSS, JavaScript, React.js/Next.js Backend: Node.js, Express, Django, or Spring Boot Full-Stack: MERN stack (MongoDB, Express, React, Node.js) 3. Data Science & Machine Learning Languages: Python (NumPy, pandas, scikit-learn, TensorFlow/PyTorch) Tools: Jupyter Notebook, Google Colab, MLFlow 4. AI & Generative AI LLMs (Large Language Models): Understand how GPT, BERT, Llama models work Prompt Engineering Fine-tuning & RAG (Retrieval-Augmented Generation) Hugging Face Transformers, LangChain, OpenAI APIs 5. Cloud Computing & DevOps Cloud Platforms: AWS, Microsoft Azure, Google Cloud Platform (GCP) DevOps Tools: Docker, Kubernetes, GitHub Actions, Jenkins, Terraform CI/CD Pipelines: Automated testing and deployment 6. Cybersecurity Basics: OWASP Top 10, Network Security, Encryption, Firewalls Tools: Wireshark, Metasploit, Burp Suite 7. Mobile App Development Native: Kotlin (Android), Swift (iOS) Cross-platform: Flutter, React Native 8. Blockchain & Web3 Technologies: Ethereum, Solidity, Smart Contracts Frameworks: Hardhat, Truffle 9. Database & Big Data Databases: SQL (MySQL, PostgreSQL), NoSQL (MongoDB, Redis) Big Data Tools: Apache Hadoop, Spark, Kafka Qualification & Years of Experience as per norms: B.Tech./MCA/M.Tech (IT/CSE) from Top tier Institutes & reputed universities Industry Experience is desirable. Candidate must have minimum 2 years of training experience in the same domain. Show more Show less

Job Description: Blockchain Trainer—Vellore Location: Vellore, Tamil Nadu Job Type: Full-time/On-site Experience: Minimum 1–2 years as a Blockchain Trainer About the Role We are seeking a passionate and knowledgeable blockchain trainer for our Vellore location. The ideal candidate will deliver high-quality, engaging training sessions on blockchain technologies to students and professionals, ensuring they gain practical and theoretical expertise in this rapidly evolving field. You will work closely with educational partners and internal teams to design, update, and deliver curriculum that reflects the latest industry trends. Key Responsibilities Deliver comprehensive training sessions on blockchain fundamentals, smart contract development, and blockchain applications to students and professionals. Develop, update, and customize curriculum and training materials to meet the needs of diverse learners and institutional partners. Provide hands-on demonstrations and facilitate practical labs using platforms such as Ethereum, Hyperledger, and Ganache. Assess learning outcomes and provide constructive feedback to participants to ensure skill development. Stay updated with emerging trends, tools, and applications in blockchain technology and integrate them into training modules. Collaborate with academic partners and internal stakeholders to understand training requirements and adapt programs accordingly. Foster an engaging, inclusive, and interactive learning environment. Required Skills & Qualifications Strong foundational knowledge of blockchain technologies, including distributed ledgers, consensus mechanisms, and cryptography. Proficiency in relevant programming languages and tools for blockchain development (e.g., Solidity, Java, DAML, Hyperledger, Ganache). Experience developing and deploying smart contracts, preferably on Ethereum or Hyperledger platforms. Excellent communication, presentation, and organizational skills. Enthusiasm for learning and technology, with the ability to inspire and motivate learners. Minimum 1–2 years of experience as a blockchain trainer or in a similar instructional role. Certification in blockchain technologies is an added advantage. Preferred Qualifications Bachelor’s or Master’s degree in Computer Science, Information Technology, or a related field. Experience with curriculum development and e-learning platforms. Prior experience collaborating with academic institutions or training organizations. Show more Show less

Role As a Blockchain Developer, you will play a critical role in building the core blockchain functionalities for exciting, early-stage projects. You will work closely with a fast-moving team to deliver real, usable products in the Web3 : Develop and deploy smart contracts (Solana, Ethereum, or similar) Integrate blockchain features into frontend and backend applications Implement wallet onboarding and secure crypto transaction flows Build decentralized features like staking, bonding curves, token issuance, and secondary trading markets Collaborate with frontend developers to integrate blockchain elements seamlessly into user interfaces Maintain high security standards for wallet interactions, smart contract calls, and user data Write clean, efficient, and well-documented : Hands-on experience in smart contract development (Rust/Solana, Solidity/EVM) Strong understanding of blockchain fundamentals (DeFi, NFTs, crypto wallets) Experience with dApp frameworks and libraries (Web3.js, Ethers.js, Solana Web3.js) Proficiency in backend development (Node.js, Express.js, Firebase, or equivalent) Familiarity with cryptographic principles (signatures, hashing, encryption) Experience with wallet integrations (Phantom, MetaMask, WalletConnect) Knowledge of token standards (ERC20, ERC721, SPL Tokens) Strong debugging and security auditing skills (ref:hirist.tech) Show more Show less

What Lies in this Exciting Space for you: Develop low-latency, high availability, and high-performance Ethereum based DeFi platform capable of secure, fast, and efficient digital transactions Develop using a microservices architecture. Apply the latest cryptology techniques to protect digital transaction data against cyberattacks and information hacks. Optimize and secure blockchain applications by integrating new tools and technologies. Liaise with stakeholders to gather and address technical & design requirements to provide solutions to the new products Write code within established standards, guidelines, and best practices to efficiently implement new systems and enhance/maintain existing systems to high-quality standards. Document blockchain development processes and comply with best practices in data protection. The Opportunity: Immensely rewarding experience in a hyper-growth Marketplace domain. Opportunity to experience and master multiple industry domains. Qualified and proficient team of smart and mission-driven people to work with. Work alongside senior management who have vast experiences across successful global IT and non-IT businesses. Engage directly with some of the best in the worldour global advisors, our advisory board, leading names in management, mathematics modelling and top platform gurus. Highly competitive compensation & start-up benefits. Your Knowledge & Expertise in as many areas as possible below : 2-5years of experience as a Solidity blockchain developer. Knowledge of cryptography and blockchain protocols (Ethereum, Bitcoin). Knowledge of Smart Contracts and Public architecture. Extensive experience in back-end development, algorithms, data structures, and microservices. In-depth knowledge of best practices in blockchain management and data protection. Experience in cloud-based as-a-service solutions (Azure preferred). Understanding of CI/CD model delivery. Understanding of maintenance & support functions of enterprise software, platform-based services, and SaaS solutions. Domain knowledge of the lending marketplace and commerce in any industry is an added advantage. Excellent communicator and ability to influence with authority. Passionate, self-driven, and start-up mindset

iMentus is a fast-growing technology services company based in Indore, India. We are serving more than 30 global clients majorly in America and Europe geography. We’re a progressive, start-up-turned-scale-up building the finance ecosystem of the future, backed by the power and scale of Blockchain technology, and we’re looking to bring in a cutting-edgeFull Stack Blockchain Developer to join our Team. If you’re looking for a role with a young company that’s building products to empower the next generation of creatives, then we want to hear from you! Your soft skills are also important to us. We are looking to hire someone with a passion for Solidity for making smart contracts, proficiency in Backend Technologies like Rust/Node/Golang and Frontend Technologies like Angular/React . You should have an eye for detail and have a passion for combining their skills with a flair for creativity. This is a fun and challenging full-time position. You need to be able to put yourself in the mind’s eye of a project’s creator, and capable of putting yourself in the minds of various adversarial or free-riding actors. While you work with clients, we will also provide you with plenty of opportunities to get involved with research and development efforts to help us raise the standards of blockchain security. We value team players who’re willing to take ownership and accountability for their work, display empathy in the creative process, apply critical thinking to ideation, and possess the patience and perseverance to see a project or product feature through from conceptualization to delivery. For any queries please reach out to career@imentus.com or visit our website imentus.com RESPONSIBILITIES: Can develop and maintain a blockchain application from start to finish. They should possess a deep understanding of how blockchain technology works and how they can build applications that are secure, scalable, and user-friendly. They are also able to code smart contracts and launch ICOs. Is responsible for developing and managing a blockchain application from start to finish. It includes everything from designing the architecture and database to developing the user interface and backend. They must also be able to deploy the application on a blockchain network and ensure that it is secure and scalable. We need people who can pick things up quickly and roll with the punches. We have various applications that communicate with the Ethereum blockchain. As a full-stack blockchain developer, you need to be able to work with libraries such as Web3, and have the knowledge to execute functions on the Ethereum blockchain (via these libraries), such as ERC20 token transfers, or retrieving specific transaction logs. You are required to sharpen a few key skills. First and foremost, you will need to be proficient in programming languages like Solidity ,JavaScript, NodeJs. Additionally, you should have a strong understanding of distributed ledger technology (DLT), Ethereum and Hyperledger. Bonus points for being a programming polyglot who in particular knows GoLang, but who can pick up other languages if and when needed. You understand CI, Agile, have worked with Slack and JIRA and GitHub, and believe that testing is a critical part of proactive software development. You have a working understanding of how encryption and signing works, particularly with respect to blockchain protocols. Rockstar points if you have worked with Cosmos-SDK/Tendermint, and know how Cosmos application blockchains and Proof-of-Stake work. The ideal candidate will come with deep knowledge and experience. They won’t be afraid to learn and in fact, will quickly take self-initiative to learn. The blockchain space moves fast, but they already know this, and they spend substantial time staying on top of developments. The right candidates are passionate about and use blockchain already on a personal basis in some capacity. If you think you have all of these qualifications, please respond with previous work that you’ve done that showcases connectivity to the Ethereum blockchain as well as other blockchain projects. We look forward to meeting you! Show more Show less

Job Overview We're Hiring: Experienced Blockchain Developer Company: Metaqualt Software Pvt Ltd Location: Ahmedabad (India) Experience Required: 3+ Years in Blockchain Development Metaqualt is a forward-thinking technology company building cutting-edge blockchain solutions in the fintech / Web3 / DeFi / supply chain space. We're passionate about decentralization, security, and performance—and we’re looking for someone who shares that passion.Responsibilities- Design, develop, and deploy smart contracts (Solidity / Vyper / Rust).- Architect and maintain decentralized applications (dApps).- Integrate blockchain protocols with frontend and backend services.- Optimize performance, scalability, and security of blockchain systems.- Collaborate with cross-functional teams including designers, DevOps, and product managers.- Stay updated with latest trends and best practices in blockchain technologies.Requirements> 3+ years of hands-on experience with blockchain development.> Strong understanding of Ethereum, EVM-based chains, or other L1s/L2s (e.g., Solana, Polkadot, Avalanche).> Proficiency with smart contract languages (Solidity, Rust, etc.).> Experience with Web3 libraries (ethers.js, web3.js).> Familiarity with DeFi protocols, wallets, gas optimization, and smart contract security.> Knowledge of testing frameworks (Hardhat, Truffle, Foundry).> Git, CI/CD practices, and agile methodologies. Job Type: Full-time Pay: ₹30,000.00 - ₹70,000.00 per month Location Type: In-person Schedule: Day shift Monday to Friday Work Location: In person

Blockchain Developer (5-7 Years Experience) Location: Ahmedabad Salary: As per Industry Standards Joining: Immediate or as per availability Company Brief: At GMI, we're at the forefront of technology, pioneering innovative solutions that revolutionize businesses worldwide. Specializing in Data, AI/ML, Web 3.0, and IoT, we equip organizations to confidently embrace the ever-evolving digital landscape. Our commitment to excellence goes beyond technology, offering premium talent services to ensure a comprehensive approach to your growth journey. Responsibilities: Design & implement blockchain solutions with secure architectures Develop & deploy smart contracts, DApps, and Web 3.0 integrations Optimize performance, scalability & security of blockchain applications Collaborate with cross-functional teams for seamless product development Stay ahead of blockchain trends & contribute to innovative solutions Requirements: ✔5-7 years of experience in Ethereum, Binance Smart Chain, or other blockchains ✔ Proficiency in Solidity, smart contract development, and DApp frameworks ✔ Strong knowledge of ReactJS, Node.js, Python, and Git ✔ Experience with decentralized storage, identity management, and cloud deployments ✔ Bachelor’s/Master’s in CS, EE, or related field Join GMI to drive the blockchain revolution! Apply now. Job Type: Full-time Benefits: Health insurance Provident Fund Location Type: In-person Schedule: Day shift Work Location: In person

Key Responsibilities • Designing, developing, and maintaining scalable Web3-enabled full stack applications. • Building intuitive frontends with React, Redux, Next.js, and component libraries like Chakra UI or Material UI. • Writing secure backend services using Node.js, Typescript, including REST/GraphQL APIs. • Designing and deploying cloud-native infrastructure using AWS with microservices architecture. • Leading code reviews & architectural discussions • Contributing to internal documentation, testing, CI/CD, and DevOps workflows. Requirements • 5+ years of experience in full stack development using TypeScript and JavaScript. • Advanced proficiency in React, Next.js, and TypeScript. • Experience building and consuming APIs using Node.js, Express, and GraphQL. • Cloud infrastructure experience with AWS, GCP. • Familiarity with Docker, Kubernetes, and CI/CD best practices. • Demonstrable experience in writing secure, well-typed, production-grade TypeScript code. • Strong problem-solving skills and ability to work autonomously in a high-growth environment. Preferred Qualification •2+ years in Web3/blockchain development. •Experience with EVM-based smart contracts, solidity, hardhat, foundery, Ether.js / Web3.js •Background in DeFi protocols, L1/L2 blockchain development, or traditional finance. Show more Show less