Senior iOS Engineer

As a Mobile Engineer you will own the quality and development of our iOS experience. You will collaborate with product design and engineering to build fast intuitive experiences that help members understand their health and take action. This is a hands-on opportunity to shape the apps architecture build its core features and take responsibility for the experience from development through App Store release.

You will work across Swift SwiftUI and UIKit and React Native Expo and TypeScript with strong hands-on expertise in both native iOS and React Native development. You will shape our mobile architecture build native integrations and choose the right approach for each experience based on performance product quality and development speed.

• Design and build mobile experiences in Swift and React Native for health results biomarker data chat and other core member journeys.

• Collaborate with product design and clinical teams to make complex health information clear and useful.

• Own mobile architecture reusable components and the integration between Swift and React Native including native capabilities such as HealthKit authentication notifications and media access.

• Improve app performance navigation accessibility and reliability across devices and network conditions.

• Own testing observability release tooling and App Store delivery with careful handling of sensitive health information.

• Work with web and backend engineers on shared data contracts reusable logic and development patterns that help the team ship across platforms.

• A strong record of shipping and maintaining consumer iOS applications with clear ownership of the work and its impact on users.

• Deep experience with Swift including native app architecture concurrency memory management production debugging and performance optimization.

• Deep experience with React Native Expo and TypeScript including app architecture state management production debugging and performance optimization.

• Strong experience with SwiftUI and UIKit Apples frameworks and building native modules that connect Swift with React Native.

• Strong understanding of app architecture state management networking testing and App Store release processes.

• Excellent product judgment and attention to interaction details with the ability to balance quality and delivery speed.

• Demonstrated ability to work independently in a startup or small engineering team. An interest in healthcare wellness or longevity is a strong plus.

• Native iOS: Swift SwiftUI UIKit Xcode

• Mobile Frameworks: React Native Expo TypeScript

• Native & Web Integration: HealthKit Expo Modules React Native WebView

• Product & Services: React Go shared data contracts and packages

• Design & Ops: Figma Linear Notion Slack

This is an in-person role based in San Francisco. You will work closely with product design clinical and engineering teammates in a small team with substantial ownership over what we build and how we build it.

We believe better health gives people more freedom to do the things that matter to them. Understanding and managing your health should be simpler more personal and part of everyday life.

This is the product weve always wanted: a thoughtfully designed all-in-one platform for understanding and improving our health.

We are a new health system on a mission to extend and enhance human life.

We started with lab testing then data aggregation / digital twin then an AI doctor and now peptides.

Over the past 6 months we have grown 10x whilst halving CAC. Now we are gearing up for hyper growth.

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