[Remote] Lead Engineer - Mobile Platform - Cross-Platform - Remote

Note: The job is a remote job and is open to candidates in USA. Optum Tech is a global leader in health care innovation, developing solutions to enhance health systems. The Lead Engineer for the Mobile Platform will design and evolve a scalable mobile platform, oversee cross-platform development, and provide technical leadership to engineering teams.ResponsibilitiesArchitecture & Platform Leadership: Define and drive the technical roadmap across cross-platform (React Native) and native (iOS, Android) solutionsHands-on Development: Deliver clean, scalable, and maintainable mobile code across platform layersCross-Platform Strategy: Lead adoption and evolution of React Native while supporting and modernizing native mobile capabilitiesFramework & Tooling: Establish shared libraries, SDKs, and platform components to unify mobile developmentPerformance & Security: Ensure high-performance, secure, and reliable mobile applicationsCollaboration: Partner with product, backend, and design teams to deliver seamless user experiencesMentorship & Leadership: Provide technical leadership and develop engineers across the mobile platformPlatform Modernization: Guide teams through architectural improvements and transitions (e.g., native → cross-platform)Emerging TechDesign, develop, and integrate AI-enabled capabilities into mobile platform solutions to address complex business challenges, with a focus on responsible and secure implementationLeverage enterprise-approved AI tools to streamline workflows, automate tasks, and drive engineering productivity and continuous improvementEvaluate and incorporate modern technologies, including AI-enabled capabilities, to enhance platform performance, scalability, and innovationSkillsBachelor's or Master's in Computer Science, Engineering, or related field or relevant experienceSolid experience in cross-platform frameworks (React Native preferred) OR demonstrated ability to learn/adoptMobile development: iOS (Swift) and/or Android (Kotlin/Java)Proven experience building scalable mobile platformsProven experience leading engineering teams / technical directionExperience with APIs (REST/GraphQL)Experience with cloud platformsExperience with CI/CD and modern engineering practicesExperience with React Native in production environmentsExperience transitioning from native → cross-platform architecturesExperience integrating AI/ML in mobileExperience building platform-level / shared mobile capabilitiesSolid understanding of global scale apps, performance, and reliabilityAll employees working remotely will be required to adhere to UnitedHealth Group's Telecommuter PolicyBenefitsA comprehensive benefits packageIncentive and recognition programsEquity stock purchase401k contribution (all benefits are subject to eligibility requirements)Company OverviewWe’re evolving health care so everyone can have the opportunity to live their healthiest life. It was founded in 1985, and is headquartered in Eden Prairie, Minnesota, USA, with a workforce of 10001+ employees. Its website is https://frontiertherapies.optum.com.Company H1B SponsorshipOptum has a track record of offering H1B sponsorships, with 73 in 2026, 648 in 2025, 559 in 2024, 620 in 2023, 851 in 2022, 593 in 2021, 438 in 2020. Please note that this does not guarantee sponsorship for this specific role.