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Vacancy description
Foundation Partners
London, United Kingdom
App Developer - Stride
Manchester (Hybrid) | Reporting to CTO
Free StrideOne membership plus family and friends discount
About Stride
‘Normal’ health is no longer good enough. Normal is code for tired, stressed, barely functioning and slowly declining, and calling that a life. We think everyone has a right to better than that.
Stride is turning tracking your entire internal biology into a lifestyle, with a next generation preventative health membership. Every member builds a multi-omic health profile covering DNA, microbiome, blood biomarkers, epigenetics and oral health. That’s over 500 biomarkers, tested at least twice a year, so we can see direction of travel and not just a single point in time.
Then we turn it into what to actually do: what to eat, how to train, what to supplement, what to watch, with a coach, dietitian or physiologist alongside you.
Imagine an elite longevity concierge, at an everyday price, with no stuffy clinics to attend!
The Role
This is a zero-to-one build. Stride doesn’t have an app yet. Members currently log in through a web portal, and your job is to turn that into an installable app on iOS and Android, launched on both at the same time.
What You’ll Be Doing:
Build and ship Stride’s first app across iOS and Android, from architecture to App Store and Play Store approval
Decide where native is essential (login, HealthKit, push, store compliance) and where web views do the job faster
Integrate with our existing REST API and data model, and help shape the API as the app’s needs become clear
Build engagement into the product: notifications, check-ins and reasons to come back every week
The Biological Age Platform
Build the member-facing experience of a genuinely novel, multi-source biological age score
Turn huge volumes of biomarker and trend data into screens that inform without overwhelming
Work with our scientific team so the app stays rigorous while staying simple
Cross-functional Partnership
Partner closely with our Product Designer, from first sketch to shipped feature
Work with the CTO on technical and UX decisions, and with the founders on functionality
Back your decisions with data. Nobody here is precious, and the best evidence wins
Building with AI
Use AI natively across scaffolding, code review, testing and documentation
Bring the experience to know what you’re asking AI to build, and to spot when it gets it wrong
How We’ll Know It’s Working
Both apps live, approved and launched together
Members opening the app weekly, not just when results arrive
A codebase that’s simple, scalable and easy to adjust, with nothing more complex than it needs to be
Features built with commercial outcomes in mind, not just technical elegance
What You’ll Bring
A track record of shipping consumer-facing apps that real users relied on, going back several years
Experience taking an app from zero to live, ideally owning the build end to end
Practical experience getting apps through App Store and Play Store review
Experience presenting large amounts of data in a way that’s clear and engaging
Fluency with AI tooling, built on fundamentals you learned before it existed
Commercial awareness: you build for scale and adaptability, not for its own sake
Comfort in a small, very fast-moving team where things change quickly and you’ll help shape the process
Bonus points: A successful wellness, health or fitness app, native iOS or Android depth, cross-platform frameworks (Flutter, React Native), HealthKit or Health Connect integrations, data-heavy apps (fintech, trading, gaming), or being an early or first engineer at a startup.
Why Stride
Preventive health is where consumer health is heading, and your work helps people find out earlier, not too late
Own the app outright, and shape the architecture rather than inheriting someone else’s decisions
Work directly with an experienced CTO and a founder who took DNAfit through an eight-figure exit to Prenetics before a Nasdaq listing
25 days holiday plus bank holidays, pension, annual learning budget and your own kit