Sr. Software Engineering - Backend

At Lilly, we unite caring with discovery to make life better for people around the world. We are a global healthcare leader headquartered in Indianapolis, Indiana. Our employees around the world work to discover and bring life-changing medicines to those who need them, improve the understanding and management of disease, and give back to our communities through philanthropy and volunteerism. We give our best effort to our work, and we put people first. We’re looking for people who are determined to make life better for people around the world.

Sr. Software Engineering

Level: R2

Post: Internal & External

Come build the next generation of Software Engineering, so we can reach and support more patients digitally!

Lilly’s mission is to develop and maintain software products that meet the needs and requirements of both our internal and external customers. This typically involves a combination of activities such as gathering and analyzing user requirements, designing, and implementing software solutions, testing and debugging code, and maintaining and improving the performance and reliability of the software over time. The goal of software engineering at Lilly is to create high-quality, reliable, and effective software utilizing cutting edge methodologies and integrations to solve Lilly’s real-world problems and provide value to our customers.

Key Responsibilities

Backend Development

• Develop and maintain scalable, high-performance server-side applications using Node.js and frameworks such as Express.js or Hapi.js.
• Build and maintain RESTful and GraphQL APIs to support frontend systems and external service integrations.
• Implement real-time communication features using WebSockets.
• Optimize backend services for scalability, performance, and security.
• Design and manage data storage with MongoDB, PostgreSQL, or similar databases.
• Apply asynchronous programming, event-driven architecture, and non-blocking I/O for efficient backend operations.
• Write clean, maintainable code and perform regular refactoring and debugging tasks.
• Collaborate with frontend developers to ensure smooth integration and API consumption.

Cloud Infrastructure & DevOps

• Develop cloud-native microservices and serverless applications using platforms like AWS, Azure, or GCP.
• Build and maintain CI/CD pipelines using GitHub Actions for seamless deployment and release automation.
• Understand deployment strategies and support infrastructure integration for full-stack applications.

Frontend Development (Supportive)

• Implement and maintain user-facing features using React.js, Angular, or Vue.js.
• Integrate frontend components with APIs and ensure compatibility across devices and browsers.
• Participate in frontend defect resolution and cross-functional development efforts.

Collaboration and Support

• Work with product managers, designers, and engineers across disciplines to define, design, and ship features.
• Participate in code reviews, contributing backend expertise and ensuring best practices are followed.
• Support production systems by monitoring logs, resolving incidents, and troubleshooting issues across layers.

Required Skills

Backend

• Experience with backend programming in Java/Python, and Node.js(backend frameworks like Express JS, Hapi JS etc.)
• Strong understanding of API design (REST & GraphQL) and real-time data flow using WebSockets
• Proficient in MongoDB, PostgreSQL, or similar databases, including schema design and query optimization
• Experience with asynchronous programming, event-driven systems, and performance tuning
• Solid understanding of cloud infrastructure, preferably in AWS, Azure, or GCP
• Hands-on experience implementing CI/CD pipelines with GitHub Actions or equivalent tools
• Familiarity with containerization and deployment workflows

General Engineering

• Strong problem-solving and debugging skills across backend systems
• Solid understanding of software engineering principles, SDLC, and Agile methodologies
• Ability to write clear, maintainable, and well-documented code

Frontend (Support)

• Proficient in JavaScript (ES6+), TypeScript, HTML5, CSS3
• Experience with one modern frontend framework: React.js, Angular, or Vue.js
• Understanding of integrating frontend UIs with backend APIs

Preferred Qualifications

• Knowledge of accessibility best practices and WCAG 2.2 standards
• Experience with design systems like Material UI or Ant Design
• Familiarity with Core Web Vitals and frontend performance optimization techniques
• Hands-on experience with responsive design and cross-browser compatibility
• Experience with frontend testing tools such as Jest, React Testing Library, Cypress, or Playwright
• Familiarity with modern frontend build tools like Webpack, Vite, Babel, and ESLint
• Exposure to GraphQL server implementations
• Experience with monorepo tools like Nx, Turborepo
• Contributions to open-source projects or developer communities

AI-Enhanced Development

• Leverage AI tools like GitHub Copilot to accelerate development workflows, improve code quality, and reduce boilerplate.
• Demonstrate proficiency in prompt engineering to effectively guide AI tools in generating optimal and context-aware code solutions.
• Use AI-assisted pair programming to support rapid prototyping, test case generation, and debugging.
• Stay informed about the evolving landscape of AI-powered development tools and integrate best practices into day-to-day engineering work.
• Encourage and mentor team members on responsible and secure use of AI in the software development lifecycle.

Soft Skills

• Effective verbal and written communication skills
• Ability to work collaboratively across backend, frontend, DevOps, and product teams
• A high degree of intellectual curiosity and commitment to continuous learning

Basic Qualifications

• Bachelor’s degree in Computer Science, Computer Engineering, or a related field
• 5+ years of professional software development experience

Lilly is dedicated to helping individuals with disabilities to actively engage in the workforce, ensuring equal opportunities when vying for positions. If you require accommodation to submit a resume for a position at Lilly, please complete the accommodation request form (https://careers.lilly.com/us/en/workplace-accommodation) for further assistance. Please note this is for individuals to request an accommodation as part of the application process and any other correspondence will not receive a response.

Lilly does not discriminate on the basis of age, race, color, religion, gender, sexual orientation, gender identity, gender expression, national origin, protected veteran status, disability or any other legally protected status.

#WeAreLilly