Senior Software Engineer I - Java React JS

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 skilled and passionate Full Stack Engineer to join our high-performing engineering team. You will be responsible for building scalable, secure, and high-performance applications that support our healthcare platforms. This role requires deep expertise in both front-end and back-end development, with a solid focus on microservices, cloud-native architecture, observability, and operational excellence.

Primary Responsibilities

• Design, develop, and maintain full-stack applications using modern frameworks and tools
• Build and develop UI using ReactJS
• Develop microservices using Java and Spring Boot and integrate with messaging systems like Apache Kafka
• Write comprehensive unit and integration test cases to ensure code quality and reliability
• Implement monitoring and observability using Grafana, Dynatrace, and Splunk
• Deploy and manage applications using Kubernetes (K8s) and GitHub Actions
• Participate in production support activities as needed, including incident resolution and root cause analysis
• Collaborate with cross-functional teams including product, QA, DevOps, and UX
• Participate in code reviews, architecture discussions, and agile ceremonies
• Ensure application performance, scalability, and security
• Stay current with emerging technologies and propose innovative solutions
• Comply with the terms and conditions of the employment contract, company policies and procedures, and any and all directives (such as, but not limited to, transfer and/or re-assignment to different work locations, change in teams and/or work shifts, policies in regards to flexibility of work benefits and/or work environment, alternative work arrangements, and other decisions that may arise due to the changing business environment). The Company may adopt, vary or rescind these policies and directives in its absolute discretion and without any limitation (implied or otherwise) on its ability to do so
  
  

Required Qualifications

• Bachelor’s or Master’s degree in Computer Science, Engineering, or related field
• 5+ years of experience in full stack development
• Hands-on experience with Kubernetes, Docker, and GitHub Actions for CI/CD
• Experience with Kafka for event-driven architecture
• Experience with SQL and NoSQL databases (e.g., PostgreSQL, MongoDB)
• Solid proficiency in Java, Spring Boot, and RESTful API development
• Solid understanding of HTML, CSS, JavaScript, and modern front-end ReactJS framework
• Familiarity with Grafana, Elastic APM, and Splunk for monitoring and logging
• Proven solid problem-solving skills and attention to detail
• Proven ability to write and maintain unit tests using tools like JUnit, Mockito, etc.
  
  

Preferred Qualifications

• Experience in the healthcare domain or working with HIPAA-compliant systems
• Exposure to DevOps practices and infrastructure as code (e.g., Terraform)
• Knowledge of security best practices in web and microservices development
• Familiarity with cloud platforms like AWS, Azure, or GCP
  
  

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.