Software Engineer - React Native Mobile Application 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.

Primary Responsibilities:

• Develop and maintain cross-platform mobile applications using React Native, ensuring high performance and responsiveness across iOS and Android devices
• Translate UI/UX designs into pixel-perfect, reusable, and scalable mobile components while maintaining consistency with enterprise design systems
• Collaborate with product managers, designers, backend engineers, and QA teams to define features, estimate effort, and deliver high-quality releases in Agile environments
• Architect, design, and implement scalable mobile solutions following best practices such as component-based architecture, state management patterns, and modular design
• Integrate and manage communication with backend services using RESTful APIs or GraphQL, including handling authentication, error states, and data synchronization
• Optimize application performance by analyzing bottlenecks, reducing load times, improving rendering efficiency, and minimizing memory usage
• Write clean, maintainable, and testable code, and perform peer code reviews to ensure adherence to coding standards and enterprise guidelines
• Implement unit, integration, and end-to-end testing strategies to ensure application reliability, along with debugging production issues and fixing defects
• Work with native modules and third-party libraries, and bridge native iOS (Swift/Objective-C) and Android (Kotlin/Java) functionality when required
• Manage CI/CD pipelines and release processes, including automated builds, testing, app store deployments, and monitoring post-release performance
• Ensure application security, data protection, and compliance with enterprise standards, including secure storage, authentication mechanisms, and permission handling
• Utilize and contribute to the team's tech stack, including React Native, JavaScript/TypeScript, Redux/Zustand/Context API, Node.js, REST/GraphQL APIs, Jest/Detox, Firebase, Fastlane, Git, and CI/CD tools like Azure DevOps or GitHub Actions, while continuously evaluating and adopting new tools and best practices
• 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 degree in Computer Science, Information Technology, or related field (B.Tech / B.E / MCA)
• 5+ years of professional experience in software development, with 3+ years focused on React Native or mobile application development
• Hands-on experience in building and deploying production-grade React Native applications for both iOS and Android platforms
• Hands-on experience with version control systems (Git) and modern CI/CD pipelines
• Experience integrating RESTful APIs and/or GraphQL services along with handling authentication and data flow
• Experience with debugging, performance optimization, and memory management in mobile applications 
• Solid understanding of mobile application architecture patterns and state management solutions (e.g., Redux, Context API, Zustand)
• Solid understanding of software engineering best practices, including code reviews, clean code principles, and Agile methodologies 
• Familiarity with native mobile development concepts and ability to work with Swift/Objective-C and Kotlin/Java when required
• Proficiency in testing frameworks (e.g., Jest, Detox) and writing unit and integration tests
• Solid proficiency in JavaScript and/or TypeScript, including modern ES6+ features
• Proven excellent problem-solving, communication, and collaboration skills, with experience working in cross-functional enterprise teams

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.