Role Description We are hiring a Senior Mobile Frontend Engineer to lead frontend work on our iOS and Android apps. You report into Engineering and partner daily with product, design, backend, and AI teams to ship features end to end. This is an IC3, initiative-level role with high autonomy and no direct reports. Your work puts clear, personalized health insights from a person's genome right in their pocket, so more people can understand their DNA and outsmart their genes. 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. Qualifications - 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 - 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). Company Description Sequencing is building the interface between humanity and its DNA. Using clinical-grade whole genome sequencing, AI, and a rapidly expanding ecosystem of genomic applications, we help people better understand themselves, their health, and their future through their DNA. The human genome is one of the most valuable and underutilized resources in the world. Our mission is to transform the human genome into a lifelong source of personalized guidance and build the trusted home for every genome on Earth. As the world’s largest direct-to-consumer whole genome sequencing platform, Sequencing is helping define the future of AI-powered personalized health. We’re a profitable, venture-backed, fully remote company building category-defining products that help people better understand themselves through their DNA.

• Develop and iterate on Kuna: auto equity and car loans for Brazil • Write clean, maintainable, well-documented code (React/Angular) • Collaborate in weekly/biweekly planning sessions to break down deliverables with the team • Backend-frontend integration: API consumption, data flows, services • Contribute to both layers: frontend with UX/UI and backend when needed (we are generalists) • Maintain constant communication with stakeholders in Argentina and Brazil (demos, presentations, technical consultations)

• Own and maintain the company's entire Next.js codebase. • Design, develop, and ship high-quality product features across frontend and backend. • Lead the technical strategy for the company's mobile application (React Native with Expo, Capacitor, or alternative approach). • Deliver production-ready iOS and Android applications. • Collaborate closely with the founder and UI/UX designer to create intuitive and polished user experiences. • Build and improve marketplace workflows, including rentals, payments, notifications, and logistics. • Develop new features related to garment care, dry-cleaning operations, inventory condition tracking, and operational workflows. • Maintain and optimize PostgreSQL databases and backend services. • Ensure application quality through testing strategies, debugging, and performance improvements. • Participate in architectural decisions and recommend the best technical solutions for product evolution. • Communicate technical concepts effectively with non-technical stakeholders and help translate business ideas into product features. • Work independently while maintaining high engineering standards and shipping consistently.

• Build product experiences end to end — Own customer-facing features from concept through production across frontend, backend, APIs, data models, and AI-powered workflows. • Lead frontend implementation for complex products — Build intuitive, performant user experiences while bringing strong judgment around frontend architecture, state management, and application design. • Strengthen our frontend foundations — Improve performance, maintainability, developer experience, and technical quality across our React application. Drive major upgrades and architectural improvements when needed. • Create reusable systems and patterns — Build thoughtful abstractions, components, and frameworks that help the team move faster without sacrificing product quality. • Partner deeply with product and design — Turn ambiguous customer problems into elegant product experiences and iterate quickly based on customer feedback. • Shape the future of AI-assisted software development — Evaluate, experiment with, and operationalize AI coding agents and development workflows. Help us determine how engineers and AI work together to build products faster, with higher quality, and greater leverage.