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Principal Software Engineer - Mobile

Hinge Health

Hinge Health

Software Engineering
San Francisco, CA, USA
Posted on Friday, March 10, 2023
Hinge Health is moving people beyond pain by transforming the way it is treated and prevented. Connecting people digitally and in-person with expert clinical care, we combine advanced technology, AI and a care team of experts to guide people through personalized care directly from their phone. Our approach is proven to reduce pain by 68%, prevent 42% of new opioid prescriptions, and avoid more than half of joint replacement surgeries. Available to 18M people, Hinge Health is trusted by leading health plans and employers, including Land O’Lakes, L.L. Bean, Salesforce, Self-Insured Schools of California, Southern Company, State of New Jersey, US Foods, and Verizon.
Here at Hinge Health, we welcome all applicants and know a diverse team makes us better and stronger. We look for individuals who embody our leadership principles and we value varied experiences and skill sets. Beyond specific work experience, we also look for unique capabilities and skill sets that are key indicators an applicant will thrive in our fast-paced, frequently evolving environment. If this sounds like the kind of place you’d like to be part of, please apply - we would love to hear from you!
Hinge Health Hybrid Model:
We believe that remote work and in-person work have their own advantages and disadvantages, and we want to be able to leverage the best of both worlds. Employees in hybrid roles are required to be in the office 2 days/week. We will be expanding to 3 days/week in the office beginning April of 2024.
About the Role:
As Principal Engineer, you’ll help guide over a dozen small product teams responsible for delivering the world’s best remedy for chronic back and joint pain. You’ll elevate our high-quality, high-velocity execution by championing the right design principles, coaching on how to apply them, and baking systems of architectural governance into our daily workflow. In the year ahead, you’ll lead the graceful refactoring of a large ReactNative mobile app using module federation and utility encapsulation.
On a given day, you’ll author position pieces to change minds, technical architecture to align teams, reference material to ease implementation, and a dozen Slacks thanking teammates for being delightful, helpful, patient, and kind. You’ll share your opinions in pull requests, formal PE review sessions, weekly operational excellence meetings, and bi-weekly technical leadership sessions with the VPs, directors, PEs and CTO. You’ll write working code to prototype interesting solutions or handle the most demanding implementations, usually pairing with developers at every level to share your approach (and have more fun at work).
You’ll give high fives and shout outs, using your high station to celebrate great technical work and courageous, thoughtful risk-taking, and you’ll give hard feedback and bar-raising input in peer reviews, interviews, and strategic planning. You will make mistakes and model how to own them and learn from them, to reinforce a climate of high-accountability, innovation, and psychological safety.
You will report to the VP Engineering for Consumer Product Development, who will work to amplify your influence on the engineering culture as Hinge Health continues to rapidly scale. Your own pragmatism, collaborative spirit, technical prowess, and creative joy will bend the shape of a fast-growing organization, and directly influence our ability to give more deserving Americans access to better healthcare, faster.
The ideal candidate wants to do something that matters and make a profound difference in real people’s lives. You are energized by the pace and freedom of a fast-moving start-up, and have developed strong time-management and prioritization habits to avoid getting sucked into the maelstrom. You really like developing software for mobile phones and tablets, and have deep expertise in their unique capabilities and constraints. Ideally, you’ve spent a lot of time with ReactNative and Typescript, and have helped a dozen+ teams contribute to a 5-star app without stepping on each other’s toes.
We enjoy a continuous deployment DevOps culture, and take owner-operator pride in supporting our code in production with an on-call rotation. Rotations vary by team.
Our production systems rely on React Native, React, Node.js, Typescript, NestJS, GraphQL, Docker, Rails, AWS, Postgres, Redis and Redux. Our workflow is trunk-based CI/CD, and our security/compliance posture is at the highest standards of healthcare, including HIPAA, HITRUST, SOC 2, and CCPA.


  • You will shape the evolution of Hinge Health’s mobile app architecture, allowing several autonomous teams to ship dozens of new product capabilities every two weeks
  • You will design novel ways of using common tech to help millions of people feel less chronic pain in their daily lives
  • You will help teams manage risk and do just-enough planning to consistently deliver high-quality projects within budget
  • You will accelerate the professional development of technical leaders with attentive mentorship and active skills training
  • You will align hundreds of developers around well-defined principles and standards that make the codebase measurably better and easier to change
  • You will raise Hinge Health’s public profile, representing the team’s innovative work in technical articles and speaking engagements


  • Frontend application development on a large, complex, top-quality consumer application
  • Expertise in high performance computation, with an emphasis on profiling and bottleneck discovery with deep O(n)-driven intuitions
  • Expertise in low-latency, highly resilient client-server architecture, including graceful degradation of features in low- or no-bandwidth modes
  • Deep familiarity with the mobile app ecosystem, including testing, observing, deploying, and managing several concurrent versions in the field across a wide rage of consumer devices
  • Team-first, growth mindset, and ability to add leverage to every level of the org, from shipping code to shaping strategy with senior leadership
  • Track record of effective project management, primarily devoted to early derisking, problem decomposition, and a strong vision that pulls the team toward the destination together
  • Experience with agile techniques and tooling for rapid prototyping and experimentation
  • Bachelor's degree in Computer Science or equivalent technical degree or equivalent experience


  • Experience with ML at the edge, inc computer vision, NLP, and diagnostic AI
  • Experience in IoT, smart home, AR/VR, or wearables (especially ones using BLE)
  • Conference speaking experience
  • Able to travel every couple months to visit teams in a number of North American hubs


  • 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 budget, use the mental health to support therapy costs, and lifestyle stipends to cover your favorite wellness services, and work-from-home equipment
  • Flexible vacation and paid time off: Employees have flexibility to choose when, how, and why they take time off to rest and recharge. Exempt employees can take advantage of our flexible PTO program. Nonexempt employees can utilize up to two weeks of sick time and up to 17 days of vacation per year, including mental health days
  • In-office perks: Daily lunch, coffee/tea and office snacks, and weekly social hours
  • Other compensation: At Hinge Health, we want every employee to be invested and rewarded in the future success of the company. All full-time positions are eligible for equity
About Hinge Health:
LinkedIn recently named Hinge Health one of the Top 50 Startups. Forbes, Fast Company, and Inc. have also recognized our technology, innovation, and culture.
Since our founding in 2014, we've raised more than $800 million from leading investors, including Coatue and Tiger Global. We work with 1000 customers across every industry and the public sector — including Salesforce, Verizon, and the State of New Jersey — to give more than 23 million people access to the care they need. We’re positioned to continue leading the market with unmatched investments in clinical research, care innovation, machine learning, AI, and computer vision.
Diversity and Inclusion:
We’re committed to building diverse teams that reflect the communities we serve. Visit to learn more about what moves us.
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 providing your information through this page or applying for a job at Hinge Health, you acknowledge that Hinge Health will collect, use, and process your information as part of our job application process. For more information on how Hinge Health processes your personal information, click here to view our Applicant and Personnel Privacy Notice.
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