Voy
Senior Mobile Engineer - Do Health
How your CV stacks up
Upload your CV to see how well it fits this job role
?%
Senior React Native Engineer (Do Health – Preventative Healthcare at Scale)
Do Health is a mobile-first, preventative health product built by a small, autonomous team within Voy, embracing a startup-like agility with the backing of an established company. Co-founded by Dr Rangan Chatterjee, we’re on a mission to shift healthcare from reactive treatment to proactive prevention.
If you’re passionate about craft, autonomy, and building impactful products, this is a rare opportunity to shape experience and architecture for millions, while delivering features independently in a fast-moving environment.
About the Role
You’ll join the core product engineering team, responsible for building and scaling our Expo/React Native app—a role beyond ticket-taking. Ownership means:
Responsibilities
- Full-cycle feature development: Lead major mobile features from concept to production in our React Native/Expo stack.
- Architecture & strategy: Collaborate with product and design to shape UX, technical architecture, and delivery roadmaps without relying solely on predefined specs.
- Autonomous execution: Make impactful product and engineering decisions, balancing speed with maintainability.
- Performance & scalability: Optimise app performance, reliability, and maintainability as user numbers grow.
- Core patterns:
- Design scalable state management solutions.
- Build offline-first architectures.
- Integrate real-time APIs without lock-in.
- Engineering excellence: Champion testing, observability, and thoughtfully reviewed code while shipping at scale.
- AI in development:
- Responsibly leverage AI tools without compromising correctness.
- Iterate on speed vs. quality.
- Shipping independently: Own features end-to-end, minimising handovers in a fast-paced environment.
Reasons to use Rodeo
Start with a chat, not a search bar
Grad scheme, placement, apprenticeship? Not sure what you want yet — that's fine. Your agent talks it through with you and turns "I have no idea" into a shortlist.
It searches the market for you
Every day your agent scans the market matching roles against what actually matters to you, not just keywords on a CV.
Only hits
No noise. No "maybe this fits." Just roles with a clear explanation of why they're right — and where to focus when applying.
Who You Are
If you **see solutions—**not just problems—this is your call:
- 5+ years of frontend engineering experience, with deep software fundamentals and an ability to solve complex systems problems.
- Core expertise:
- React Native (global teams’ reliance on your gestures, flows, and optimisations).
- TypeScript (rigorous, scalable typing to prevent silent bugs).
- Expo (familiarity with tools, plugins, and.phone-gap successor).
- Ownership mindset:
- Takes hyper-autonomy seriously: turns end-to-end ownership into measurable impact.
- Product-minded engineering:
- Prioritises UX/UX outcomes, not just technical debt.
- Obsessed with user clarity (clear > clever architectures).
- Comfort in ambiguity:
- Builds trust through sound technical judgment calls.
- Shares context to license teams to act), then removes unnecessary blocks.
- Execution-first culture:
- Ship incremental value, ship frequently, and draw data-lead conclusions to improve.
- Startup experience:
- Fast-moving (but not chaos); scale-ups; or discipline-driven design teams.
- AI stewardship:
- Judiciously uses AI to reduce mental load in trade-offs, not compromise correctness or quality.
Get help with your application
Your very own career expert that helps elevate your application to the next level.
About Our Impact
Healthcare is broken. We’re fixing it.
From MANUAL to Voy: A vision for holistic health
- 2019: Launched MANUAL, pioneering men’s preventative health (hair loss, sexual health).
- 2022: Expanded to Voy, adding weight loss as a core feature.
- 2025: Fully evolve: supporting over 1m members across the UK, Germany, and Brazil—tackling weight loss, menopause, TRT, and more.
Our smoking gun story isn’t just another weight-loss program. Tracking tens of thousands of outcomes over years—and the team’s peer-reviewed publications—prove that personalised, trusted recommendations sustained behavior change lastingly (with industry leading retention).
Join us
We’re still scaling—changing how millions perceive and prioritise their health—and we need engineers who are just as ambitious. Ready to ship features that, years later, are still standing up for thousands of people?
“It took my CV and asked me questions relevant to understanding what kind of jobs to suggest for me. Suggestions were almost perfect. Jobs were exactly what I’ve been looking for.”
Jessica, London
Skills
Location