Senior Full Stack Engineer

Optum is a global organization that delivers care, aided by technology, to help millions of people live healthier lives. The Senior Full Stack Engineer will design and develop scalable user interfaces and integrate AI-assisted development practices to improve code quality and efficiency.

Responsibilities:

• Design, develop, and own complex, scalable user interfaces using React and modern frontend technologies
• Lead the implementation of UI features with a strong focus on performance, reliability, and maintainability
• Build reusable, modular UI components and frontend architectures that support long‑term scalability
• Integrate AI‑assisted development practices to improve code quality, development efficiency, and delivery speed
• Apply AI‑based tools for code generation, refactoring, debugging, testing, and UI optimization where appropriate
• Ensure high standards of code quality through clean design, unit and integration testing, documentation, and code reviews
• Integrate frontend applications with backend services and APIs to deliver seamless end‑to‑end functionality
• Troubleshoot, debug, and resolve complex UI issues across development, testing, and production environments
• Optimize application performance, rendering behavior, and state management in large‑scale React applications
• Contribute to frontend modernization initiatives, including improving UI architecture, tooling, and engineering practices
• Provide onshore support during US business hours to triage and resolve UI‑related production and deployment issues
• Design, develop, and deploy AI-powered solutions to address complex business challenges with emphasis on responsible use of AI