Note: The job is a remote job and is open to candidates in USA. Optum delivers technology-enabled care and health services that help people live healthier lives. The Lead Engineer will define and evolve a next-generation mobile platform with integrated AI capabilities, leading architecture, hands-on development, performance, security, collaboration, mentorship, and responsible AI innovation.
Responsibilities
- Architecture & Platform Leadership: Define and drive the technical roadmap across native (iOS, Android) and cross-platform (React Native) solutions
- AI Integration: Implement and optimize AI/ML models for mobile apps using Core ML, TensorFlow Lite, PyTorch Mobile, and ONNX Runtime Mobile
- Hands-on Development: Deliver clean, scalable, and maintainable code in Swift, Kotlin/Java, TypeScript/JavaScript (React Native), and Python for ML workflows
- React Native Expertise:
- Architect hybrid apps combining React Native with native modules
- Leverage Fabric, TurboModules, and Hermes for performance
- Enable OTA updates via CodePush, Expo Updates, and ensure smooth CI/CD delivery
- Framework & Tooling: Establish SDKs, libraries, and shared components to unify native and RN ecosystems
- Performance & Security: Optimize AI features for latency, memory, battery usage, and enforce enterprise security standards
- Collaboration: Partner with data scientists, backend engineers, and designers to deliver seamless AI-driven user experiences
- Mentorship & Leadership: Provide technical mentorship on both AI/ML and mobile platform engineering
- Innovation: Experiment with generative AI, personalization engines, multimodal models, and their deployment in mobile apps
- Design, develop, and deploy AI-powered solutions to address complex business challenges with emphasis on responsible use of AI
- Leverage enterprise-approved AI tools to streamline workflows, automate tasks, and drive continuous improvement
- Evaluate emerging trends to inform solution design and strategic innovation
Skills
- • Bachelor's or Master's in Computer Science, Engineering, or related field
- • 10+ years of software engineering experience, with at least 5 years in mobile platform architecture
- • Experience with programming languages:
- • Mobile: React Native, Kotlin/Java
- • Cross-platform: JavaScript/TypeScript (React Native)
- • AI/ML: Python (PyTorch, TensorFlow, Hugging Face, ONNX)
- • Mobile Development Tools & Frameworks experience to include:
- • iOS: Xcode, SwiftUI, UIKit, Combine
- • Android: Android Studio, Jetpack Compose, Gradle
- • React Native: RN CLI, Expo, Redux/Context API, React Navigation, Metro bundler
- • AI/ML Tools & Frameworks experience to include:
- • On-device: Core ML, TensorFlow Lite, PyTorch Mobile, ONNX Runtime Mobile
- • Training/Serving: PyTorch, TensorFlow, Hugging Face Transformers
- • Optimization: Quantization, pruning, distillation, TensorRT
- • Cloud & Backend Platforms experience with AWS SageMaker, GCP Vertex AI, Firebase, Azure AI, GraphQL, REST APIs
- • CI/CD & DevOps: GitHub Actions, Fastlane, Bitrise, Jenkins, AppCenter, Docker, Kubernetes
- • Testing & QA experience with:
- • React Native: Jest, Detox
- • iOS: XCTest
- • Android: Espresso
- • E2E: Appium
- • Monitoring & Analytics experience with Firebase Crashlytics, Sentry, Datadog, New Relic, Mixpanel
- • Security & Privacy experience with OAuth 2.0, JWT, Keychain/Keystore, secure storage, differential privacy
- •All employees working remotely will be required to adhere to UnitedHealth Group's Telecommuter Policy
- • Experience leading large-scale React Native + native hybrid projects
- • Knowledge of generative AI (LLMs, diffusion models, multimodal) applied in mobile contexts
- • Contributions to open-source React Native or AI libraries
- • Expertise in design systems for consistent cross-platform UI
- • Familiarity with global-scale delivery (internationalization, accessibility, offline-first apps)
Benefits
- Flexibility to work remotely from anywhere within the U.S.
- Comprehensive benefits package
- Incentive and recognition programs
- Equity stock purchase
- 401k contribution
- Career development opportunities
Company Overview
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