Internship React Native Developer Jobs in California

The Opportunity

Home is the first thing members see when they open the Hinge Health app. The Home Pod is responsible for making sure every member quickly finds the care they came for, and as a result, we sit on a critical business path for Hinge Health. In this role, you’ll own and evolve the core Home experience on our React Native app, using experimentation to deliver a delightful experience that reliably guides members into the right sessions and programs.

You’ll join a strong pod as the senior-most engineer, partnering closely with product, design, data, and backend teams to define the technical direction, raise the quality bar, and mentor others while shipping impactful improvements to one of our most visible product surfaces.

Below are example impact areas over your first 3, 6, and 12 months. At Hinge Health, we regularly adjust priorities to respond to member needs and business incentives, so these are illustrative rather than fixed checklists.

• In your first 3 months:

  • Build a deep understanding of the Home domain, member journeys, and how Home connects to core care experiences (sessions, programs, content).

  • Partner with product, design, and data to map the current Home funnel, identify key drop-offs, and prioritize experiments.

  • Ship meaningful improvements to our existing React Native Home experience, focusing on performance, reliability, and polish.

• In your first 6 months:

  • Mentor and pair with engineers on the pod, helping them grow in mobile best practices, code quality, and experimentation mindset.

  • Continue to improve our new server-driven UI architecture for Home, collaborating with backend and platform teams to refine APIs, configuration models, and guardrails.

  • Deepen and participate in our existing experimentation and measurement framework for Home (e.g., A/B tests, feature flags, event instrumentation) to iterate on layouts, recommendations, and CTAs.

• In your first year:

  • Own the long‑term technical roadmap for the Home pod’s client architecture, balancing flexibility (through server configuration) with a responsive, native‑quality member experience.

  • Drive cross‑team initiatives to improve the end‑to‑end journey from Home through sessions and care plans, ensuring the surface reliably delivers business outcomes (session bookings, program engagement, retention).

  • Raise engineering standards on the pod (testing, observability, reliability, accessibility, performance) and help scale the team’s impact as the product and membership grow.

• Mobile product craftsperson: You care deeply about core flows and how they feel in a member’s hand, from loading behavior and animations to edge cases and error states.

• Experimentation-oriented: You’re comfortable defining hypotheses, designing experiments, instrumenting funnels, and iterating based on data and qualitative feedback.

• Server‑driven UI experience: You’ve designed or worked with server‑configured experiences and know how to keep them fast, reliable, and intuitive for both members and internal stakeholders.

• Team mentor and collaborator: You enjoy leveling up a strong but more junior team through pairing, code reviews, design discussions, and clear written communication.

• Owner mindset: You think in terms of systems and business impact, not just tickets—you’re comfortable taking a problem from idea through launch, measurement, and iteration.

• 4+ years of practical software engineering experience, including building and shipping user-facing applications in production.

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

• 2+ years of hands‑on React Native experience building mobile applications at scale.

• Experience designing and implementing server‑driven UI or configuration‑driven presentation layers on mobile or other client platforms.

• Track record of running experiments (e.g., A/B tests or multivariate tests) on core product surfaces and using results to drive roadmap decisions.

• Strong proficiency with TypeScript/JavaScript, React Native, and modern mobile development tooling; familiarity with backend services (e.g., Node/TypeScript, GraphQL, or similar) is a plus.

• Experience working on high‑traffic, critical‑path surfaces (e.g., home screens, discovery/navigation surfaces, or key funnels).

• Demonstrated ability to mentor and grow other engineers through code reviews, design collaboration, and technical guidance.

• Comfort collaborating with product, design, and data/analytics partners to define metrics, interpret results, and refine experiences.

• Experience in healthcare, consumer apps, or other regulated or data‑sensitive environments is a plus.

This role is a hybrid position based in our San Francisco office.

This is a hybrid role based in the San Francisco office, requiring in‑person attendance three days per week for a full 8‑hour business day. On remote days, employees are expected to work during core business hours with flexibility. The office is part of a dog‑friendly workplace program, and while travel is not regularly required, occasional off‑site/on‑site events may occur.

At Hinge Health, we’re using technology to scale and automate the delivery of healthcare – starting with musculoskeletal (MSK) conditions, which affect over 1.7 billion people worldwide. With an AI‑powered human‑centered care model, Hinge Health leverages cutting‑edge technology to improve outcomes, experiences and costs to help people move beyond their pain. The platform addresses a broad spectrum of MSK care – from acute injury, to chronic pain, to post‑surgical rehabilitation – through personalized, evidence‑based care. As the preferred partner to 60+ health plans, PBMs and other ecosystem partners, Hinge Health is available to over 20 million people across more than 2,800 employers. The company is headquartered in San Francisco with additional offices in Montreal and Bangalore. Learn more at http://www.hingehealth.com.

• Inclusive healthcare and benefits: On top of comprehensive medical, dental, and vision coverage, we offer employees and their family members help with gender‑affirming care, tools for family and fertility planning, and travel reimbursements if healthcare isn’t available where you live.

• Planning for the future: Start saving for the future with our traditional or Roth 401k retirement plan options which include a 2% company match.

• Modern life stipends: Manage your own learning and development.

• Grow with us through discounted company stock through our ESPP with easy payroll deductions.

Hinge Health is an equal opportunity employer and prohibits discrimination and harassment of any kind. We make employment decisions without regards to race, color, religion, sex, sexual orientation, gender identity, national origin, age, veteran status, disability status, pregnancy, or any other basis protected by federal, state or local law. We also consider qualified applicants regardless of criminal histories, consistent with legal requirements. We provide reasonable accommodations for candidates with disabilities. If you feel you need assistance or an accommodation due to a disability, let us know by reaching out to your recruiter. By submitting your application you are acknowledging we are using your personal data as outlined in the personnel and candidate privacy policy.