Mobile App Developer

Mobile App Development

Write clean, maintainable, efficient code in React Native for Expo. Own features end-to-end - from the Uniwind-styled component to the API integration to the local data and state layer. Ship a fast, fluid experience on both iOS and Android.

Releases & OTA

Own the release pipeline using Expo Application Services (EAS Build & Submit). Manage App Store and Google Play submissions, and ship fixes and improvements between store releases with over-the-air updates.

Quality Assurance

Build robust testing processes - unit, integration, and end-to-end - plus real-device and QA testing across screen sizes and OS versions. Resolve technical issues during development and post-release.

Project Management

Work with non-technical stakeholders to define requirements, deliverables, and timelines. Track progress and flag risks early.

Data & Integrations

Consume RESTful APIs and manage on-device data, caching, and offline sync. Integrate health and fitness data across 500+ wearable devices and platform sources, including Apple HealthKit and Android Health Connect.

Monitoring & Performance

Use Sentry to monitor app health, debug crashes, and continuously improve performance - startup time, frame rates, bundle size, and battery impact.

Technologies you’ll use:

MOBILE - Expo · React Native · TypeScript

STYLING - Uniwind · AniUI

DATA & STATE - RESTful APIs · TanStack Query · Async/secure storage · Offline sync

DEVICE INTEGRATIONS - Terra Wearable Integration

RELEASES & INFRA - EAS Build & Submit · OTA updates · App Store · Google Play

TOOLING - Git · CI/CD · Sentry

Do you have experience in Mobile product development?, Do you have a Bachelor’s degree?, * Proven experience as a mobile engineer with a track record of shipping production apps to the App Store and Google Play

• Strong proficiency in TypeScript and React Native
• Hands-on experience building and releasing apps with Expo and EAS in production environments
• Experience styling with Uniwind, NativeWind, or a comparable utility-first / Tailwind-based approach for React Native
• Solid understanding of mobile app architecture, navigation, state management, and RESTful API integration
• Experience with the mobile release lifecycle - store submissions, versioning, and OTA updates
• Comfort working with native modules and bridging when a managed workflow isn’t enough
• Working knowledge of on-device storage, caching, and offline-first patterns
• Agile development methodology experience; you thrive in sprint-based cycles
• Excellent communication skills; you can translate technical concepts for non-technical stakeholders

Education:

Bachelor’s degree in Computer Science, Engineering, or a related field (required).

The working style:

• Fast-paced sprint cycles - You scope, build, ship, and iterate with minimal hand-holding.

• Cross-functional collaboration - Working across product, design, and engineering to translate user needs into polished mobile experiences.

• Clear communication - You make complex systems understandable to non-technical partners and stakeholders.

• Knowledge sharing culture - You actively contribute to team learning, code reviews, and technical documentation.

• Proactive problem solving - You surface risks early, propose solutions, and take ownership of outcomes., * Bachelor’s (Preferred)

Pulled from the full job description

• Stock options
• Flexible schedule, $7,500/month

This is a contractor role with future stock option eligibility as Life OS grows.

Ready to build the future of health tech - in everyone’s pocket?

Pay: $7,500.00 per month

Benefits:

• Flexible schedule

Life OS is a revolutionary health and wellness platform built to foster self-transformation through a meticulously curated community of experts, tools, resources, and actionable insights. Our mission is simple: make a happy, healthy life accessible to everyone, everywhere.

We integrate 500+ wearable devices, real-time health data, and expert-curated content into a unified experience and we need engineers who can build it beautifully.