Senior Full Stack Engineer

Optum is a global organization that delivers care, aided by technology, to help millions of people live healthier lives. The work you do with our team will directly improve health outcomes by connecting people with the care, pharmacy benefits, data and resources they need to feel their best. Here, you will find a culture guided by inclusion, talented peers, comprehensive benefits and career development opportunities. Come make an impact on the communities we serve as you help us advance health optimization on a global scale. Join us to start Caring. Connecting. Growing together. You will enjoy the flexibility to telecommute* from anywhere within the U.S. as you take on some tough challenges. Primary 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. You’ll be rewarded and recognized for your performance in an environment that will challenge you and give you clear directions on what it takes to succeed in your role as well as provide development for other roles you may be interested in. Required Qualifications: Bachelor's degree in Computer Science, Engineering, or equivalent practical experience 5+ years of professional experience in building full‑stack applications 5+ years of backend development experience using Java 3+ years of experience with React, modern frontend technologies 3+ years of experience designing and consuming RESTful or GraphQL APIs Preferred Qualifications: Backend development experience, Node.js, Python, or similar server‑side technologies Strong hands‑on experience with AWS cloud services, including application deployment and troubleshooting Proficiency in writing clean, testable, and maintainable code across frontend and backend layers Experience using AI‑assisted development tools for coding, testing, or developer productivity Familiarity with CI/CD pipelines, version control systems, and agile development practices Strong debugging and problem‑solving skills, including production issue resolution Knowledge of security best practices for web applications and cloud environments *All Telecommuters will be required to adhere to UnitedHealth Group’s Telecommuter Policy. Pay is based on several factors including but not limited to local labor markets, education, work experience, certifications, etc. In addition to your salary, we offer benefits such as, a comprehensive benefits package, incentive and recognition programs, equity stock purchase and 401k contribution (all benefits are subject to eligibility requirements). No matter where or when you begin a career with us, you’ll find a far-reaching choice of benefits and incentives. The salary for this role will range from $91,700 to $163,700 annually based on full-time employment. We comply with all minimum wage laws as applicable. Pursuant to the San Francisco Fair Chance Ordinance, we will consider for employment qualified applicants with arrest and conviction records. Application Deadline: This will be posted for a minimum of 2 business days or until a sufficient candidate pool has been collected. Job posting may come down early due to volume of applicants. At UnitedHealth Group, our mission is to help people live healthier lives and make the health system work better for everyone. We believe everyone–of every race, gender, sexuality, age, location, and income–deserves the opportunity to live their healthiest life. Today, however, there are still far too many barriers to good health which are disproportionately experienced by people of color, historically marginalized groups, and those with lower incomes. We are committed to mitigating our impact on the environment and enabling and delivering equitable care that addresses health disparities and improves health outcomes — an enterprise priority reflected in our mission. UnitedHealth Group is an Equal Employment Opportunity employer under applicable law and qualified applicants will receive consideration for employment without regard to race, national origin, religion, age, color, sex, sexual orientation, gender identity, disability, or protected veteran status, or any other characteristic protected by local, state, or federal laws, rules, or regulations. UnitedHealth Group is a drug - free workplace. Candidates are required to pass a drug test before beginning employment. #RPO #GREEN Apply To This Job