Senior Java Full Stack Developer

About the Role

Zaps Group is seeking a highly skilled and experienced Senior Java Developer to join our talented engineering team. In this role, you will be a key contributor to the design, development, and maintenance of our mission-critical backend systems. You will leverage your deep expertise in Java, Spring Boot, and microservices architecture to build high-performance, scalable, and secure applications that power our business.

The ideal candidate is a passionate problem-solver with a commitment to code quality, a collaborative mindset, and a proven track record of delivering robust enterprise-level solutions. If you are ready to take on complex challenges and make a significant impact, we want to hear from you.

Key Responsibilities:

Core Backend Development

• Design, develop, and maintain high-performance, scalable, and secure backend applications using Core Java and the Spring Boot framework.
• Build and consume robust RESTful APIs, ensuring seamless integration with front-end applications and third-party systems.
• Architect and implement solutions within a multi-tier architecture, including service layers, repositories, and controllers.

Microservices Architecture

• Develop, deploy, and maintain independent microservices using Spring Boot and Spring Cloud.
• Implement essential microservices patterns, including service discovery (e.g., Eureka), centralized configuration, and API gateways (e.g., Spring Cloud Gateway).
• Ensure services are loosely coupled, independently deployable, and resilient.

Database & Persistence Layer

• Design and optimize database schemas and write efficient, high-performance SQL queries.
• Utilize ORM frameworks like Hibernate/JPA for effective data persistence and object-relational mapping.
• Manage database transactions, implement connection pooling, and perform performance tuning to ensure data integrity and speed.

Security Implementation

• Implement robust authentication and authorization mechanisms using Spring Security, including standards like JWT and OAuth2.
• Secure REST APIs, protect sensitive endpoints, and ensure the application is shielded from common security vulnerabilities.

Code Quality & Testing

• Write clean, maintainable, and efficient code, strictly adhering to SOLID principles and industry best practices.
• Develop comprehensive unit tests (JUnit, Mockito) and integration tests to ensure reliability and stability code.
• Actively participate in peer code reviews to maintain high code quality standards across the team.

DevOps & Deployment

• Collaborate with the DevOps team to build and manage CI/CD pipelines using tools like Jenkins or GitHub Actions.
• Package applications into Docker containers and manage deployments in environments like Kubernetes or cloud platforms (AWS, GCP, Azure).
• Monitor application performance, analyze logs (e.g., ELK Stack, Prometheus), and ensure high availability.

Mentoring & Leadership

• Mentor junior developers, provide technical guidance, and contribute to the team's continuous learning and upskilling.
• Potentially lead small project teams or modules, taking ownership of architectural decisions and code quality.

Skills and Qualifications

Required:

• 6+ years of professional experience in Java development.
• Expert-level proficiency in Core Java and the Spring Framework (specifically Spring Boot).
• Strong, hands-on experience in designing and building microservices.
• In-depth knowledge of Spring Security (JWT/OAuth2), JPA/Hibernate, and RESTful API design.
• Proficiency with relational databases (e.g., PostgreSQL, MySQL) and writing complex SQL.
• Experience with unit testing frameworks like JUnit and Mockito.
• Solid understanding of Git for version control and experience with project management tools like JIRA.

Preferred:

• Experience with Spring Cloud components.
• Familiarity with containerization (Docker) and orchestration (Kubernetes).
• Hands-on experience with CI/CD pipelines and cloud platforms (AWS, GCP, or Azure).
• Knowledge of monitoring tools like Prometheus, Grafana, or the ELK Stack.
• Experience with API documentation tools like Swagger/OpenAPI.

Job Type: Full-time

Pay: ₹500,000.00 - ₹1,200,000.00 per year

Benefits:

• Health insurance
• Paid sick time
• Provident Fund

Work Location: In person