B
Bios Life
Senior Fullstack Engineer
Skills
Mobile DevelopmentReactTypescriptDjangoPythonReact NativeGraphQLAI
15 days ago
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Important information
Contract type:
Permanent
Location:
Cambridge, MA, USA
Work mode:
Onsite
Published on:
6 October 2026
What they need
Key Responsibilities
- Independently deliver complete patient-facing features from concept through implementation and release across the React Native mobile app and supporting backend services.
- Own full vertical slices of work, including UI implementation, GraphQL API integration, backend updates, loading states, error states, accessibility, and edge-case handling.
- Build and ship high-quality patient-facing workflows such as appointment scheduling, care plan tracking, messaging, and other core user experiences.
- Improve mobile application quality and stability by reducing crash rates, improving latency on critical flows, and implementing monitoring, alerting, error tracking, structured logging, and debuggability.
- Extend backend models and GraphQL APIs as needed to support product features while maintaining clean service boundaries and avoiding unnecessary technical debt.
- Ensure secure and compliant handling of sensitive patient data in all feature development, including safe logging, secure data handling, and alignment with HIPAA-conscious engineering practices.
- Contribute to internal clinical workflow tooling and backend services as business priorities shift.
- Work within the architecture established by the Staff App Engineer while identifying and raising opportunities to improve delivery speed, user experience, and technical quality.
- Strengthen day-to-day engineering practices through high-quality code, testing, thoughtful pull request reviews, pairing, and practical improvements to CI/CD and developer experience.
- Partner effectively with product, design, and engineering stakeholders to deliver polished, reliable, patient-facing experiences.
Qualifications
- 4 to 7+ years of experience building and shipping production software, with the ability to independently deliver high-quality end-to-end features.
- Strong production experience with React Native, including navigation, state management, platform-specific behavior, performance debugging, and shipping mobile features in a production environment.
- Experience working across the full stack, including React Native on the frontend and GraphQL plus backend services on the server side.
- Ability to consume GraphQL effectively on the client side and extend backend schemas, resolvers, and data models when required for feature delivery.
- Strong understanding of secure application development, including encryption, secure storage, access controls, audit logging, safe handling of sensitive data, and thoughtful evaluation of third-party dependencies.
- Ability to build complete user-facing features that account for accessibility, usability, loading behavior, edge cases, and production readiness.
- Experience working in a fast-moving, startup or greenfield environment with evolving requirements and limited process overhead.
- Strong communication and collaboration skills, including the ability to explain tradeoffs clearly and work effectively with engineers and non-technical stakeholders.
- Demonstrated ownership, follow-through, and pragmatic decision-making, including knowing when to ask for guidance and when to move quickly with imperfect information.
- Experience using AI coding tools as a regular part of the development workflow while maintaining strong engineering judgment and code quality.
Preferred Qualifications
- Experience with Python/Django backend development.
- Familiarity with mobile CI/CD, app store submission, beta distribution, feature flagging, staged rollouts, and production monitoring.
- Experience implementing accessibility in React Native applications.
- Experience with Expo and EAS toolchain.
- Experience with offline-first mobile application patterns and data synchronization.
- Familiarity with FHIR resources or clinical data models.
- Strong TypeScript skills.
- Strong product and UI/UX sensibility.
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