Senior Mobile Frontend Engineer

The Position

The Impact

• Own frontend development for our native iOS and Android apps built with React Native.
• Turn product specs and Figma designs into pixel-perfect, high-performance mobile screens.
• Ship features end to end, from first build to App Store and Google Play release.
• Partner with backend engineers to wire up APIs, real-time data, and AI-powered features.
• Make the app feel consistent and accessible across both iOS and Android.
• Optimize startup time, responsiveness, and overall performance on modern devices.
• Shape architecture, component design, and state management patterns for the mobile codebase.
• Lead code reviews and hold the quality bar for everyone touching mobile.
• Build rich, interactive screens with smooth animations and gestures.
• Partner with QA to test, fix bugs, and get each release ready to ship.
• Run App Store and Google Play release processes and keep the apps healthy over time.
• Set best practices for mobile development that the whole company can follow.
• Influence technical direction so our mobile experience scales with our growing customer base.

Dominant and Expressed Traits

• 6+ years of professional frontend mobile development experience, with 3+ years building production apps in React Native.
• Strong command of TypeScript and modern React patterns.
• Solid grasp of how iOS and Android differ, and how to build for the constraints of each.
• Hands-on experience integrating APIs, plus mobile performance optimization and debugging.
• Comfortable working from product requirements and design specs without heavy oversight.
• Clear communicator who collaborates well across product, design, backend, and AI.
• Experience with Expo and EAS build workflows, animations, gestures, and rich interactive UI.
• Familiar with mobile analytics, logging, and monitoring tools.
• Track record owning mobile releases in the App Store and Google Play, ideally on apps with AI-driven or real-time features.

Benefits Overview

• Comprehensive medical, dental, and vision insurance coverage
• 401(k) with company matching
• Paid time off (PTO)
• Paid volunteer time off
• Fully remote work with home office stipend
• Parental bonding leave
• Clinical-grade whole genome sequencing for you and your family (private and confidential)

Join Sequencing

• Redefine how people understand themselves through their DNA
• Build category-defining products alongside scientists, engineers, and innovators
• Contribute to technology that will improve and extend millions of lives
• Shape one of the most important emerging categories in AI and healthcare