Full Stack Engineer - React JS, Web Developer

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.

We are seeking a highly skilled Full Stack Engineer with expertise in React, Java, AWS Cloud, CI/CD, and AI-powered application development. The ideal candidate will be responsible for designing, developing, and delivering scalable web applications while leveraging Generative AI capabilities to build intelligent and innovative solutions.

Primary

Responsibilities

• Design, develop, and maintain end-to-end web applications using React (frontend) and Java/Spring Boot (backend)
• Build scalable REST APIs, microservices, and cloud-native applications
• Develop responsive, secure, and high-performance user interfaces
• Integrate Generative AI capabilities into applications to drive automation and enhance user experiences
• Build and manage applications on AWS Cloud leveraging services such as EC2, ECS/EKS, Lambda, S3, RDS, API Gateway, and CloudWatch
• Develop and maintain CI/CD pipelines to automate build, test, deployment, and release processes
• Work with AI frameworks, LLMs, prompt engineering, vector databases, RAG architectures, and AI orchestration tools
• Collaborate with product managers, architects, and cross-functional teams to deliver high-quality solutions
• Ensure application quality through code reviews, automated testing, security scans, and DevOps best practices
• Troubleshoot, optimize, and enhance application performance, scalability, and reliability
• Comply with all applicable Company policies, procedures, and business directives, changes including those relating to work location, team assignments, work schedules, and flexible work arrangements

Required

Qualifications

• B. Tech / MCA (16+ years of formal education)
• 4+ years of proven experience as a Software Engineer in React (frontend) and Java/Spring Boot (backend)
• Hands-on experience as a Full Stack Engineer (FSE) with a solid understanding of micro-services Architecture
• Familiarity with CI/CD pipelines and tools such as Docker, Kubernetes/NoMad, and Jenkins
• Proficient in GenAI, Python, Angular, Java, Spring/Spring Boot, Hibernate, Git, RESTful APIs, Splunk, and MySQL
• Proven solid grasp of core design principles for building scalable and maintainable applications
• Demonstrated solid analytical thinking and problem-solving capabilities
• Proven support QA, UAT and release phases of the project via defect analysis, change maintenance
• Proven effective team player with excellent communication and interpersonal skills
• Proven fast learner with a passion for exploring new programming languages and emerging technologies

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.