At a Glance
- Tasks: Own backend features from design to deployment, shaping architecture and scaling systems.
- Company: Join Do Health, a mobile-first startup co-founded by Dr Rangan Chatterjee.
- Benefits: Be part of a small team with direct impact and ownership over your work.
- Other info: Dynamic startup environment with opportunities for personal and professional growth.
- Why this job: Make a real difference in preventative health with innovative tech and AI.
- Qualifications: 5-8 years backend experience, strong architectural thinking, and familiarity with TypeScript or similar.
The predicted salary is between 60000 - 80000 £ per year.
Requirements
- 5–8 years of backend experience with strong fundamentals. We care more about depth than years.
- Experience at a startup or scale-up where you genuinely owned things.
- Architectural thinking. You can hold an end-to-end technical conversation about systems you've built — what trade-offs you made, what broke, what you'd do differently.
- A track record of shipping reliable systems. Not just features — the boring infrastructure that keeps them up.
- Comfort with judgement calls in ambiguous situations. Most decisions here don't have a clear right answer.
- Confident, responsible use of AI tools in your workflow. Not 'vibe coding' - using them as a force multiplier where they help, ignoring them where they don't.
- Desirable: Strong TypeScript / Node.js experience (it's our primary stack, but we'll happily hire someone excellent in Go, Kotlin, Python or similar).
- Desirable: Experience scaling systems to high user volumes.
- Desirable: Exposure to ML/AI systems in production.
- Desirable: Healthcare or regulated-industry experience.
What the job involves
- We're hiring the Founding Backend Engineer at Do Health - a mobile-first preventative health product co-founded by Dr Rangan Chatterjee, built as an independent startup inside Voy.
- You'd join a 10-person team, partnering directly with our lead engineer on the backend.
- There's no layer of management between you and the work. What you ship in month one is what users get.
- Own major backend features end-to-end - design, build, ship, monitor, iterate. Not 'contribute to' - own.
- Shape architecture alongside the lead. Real technical decisions, made by you, kept or changed based on what works.
- Scale our blood testing infrastructure across the UK and internationally as we expand.
- Build production AI systems - personalisation engines that act on longitudinal health data at scale.
- Improve reliability, observability, and the foundations that everything else depends on as the product grows.
- Work directly with product, design, and clinical teams. No tickets thrown over walls.
Senior BackEnd Engineer (Do Health) employer: Voy
At Do Health, we pride ourselves on being an exceptional employer that fosters a collaborative and innovative work culture. As a Senior BackEnd Engineer, you'll have the unique opportunity to take ownership of major backend features in a dynamic startup environment, working closely with a small, dedicated team to shape the future of preventative health. With a focus on personal and professional growth, we offer a supportive atmosphere where your contributions directly impact our mission, alongside competitive benefits and the chance to work on cutting-edge AI systems in the healthcare sector.
StudySmarter Expert Advice🤫
We think this is how you could land Senior BackEnd Engineer (Do Health)
✨Tip Number 1
Network like a pro! Reach out to folks in your industry on LinkedIn or at meetups. A personal connection can often get you a foot in the door faster than any application.
✨Tip Number 2
Show off your skills! Create a portfolio or GitHub repo showcasing your projects, especially those that highlight your architectural thinking and backend expertise. This gives potential employers a taste of what you can do.
✨Tip Number 3
Prepare for technical chats! Brush up on your systems knowledge and be ready to discuss trade-offs and decisions you've made in past projects. Confidence in these conversations can really set you apart.
✨Tip Number 4
Apply through our website! We love seeing candidates who take the initiative. Plus, it shows you're genuinely interested in joining our team at Do Health. Don't miss out!
We think you need these skills to ace Senior BackEnd Engineer (Do Health)
Some tips for your application 🫡
Show Your Depth:When you're writing your application, make sure to highlight your backend experience and the architectural thinking you've developed over the years. We want to see how you've genuinely owned projects and made those tough decisions that come with building reliable systems.
Be Specific About Your Impact:Don't just list your past roles; tell us about the major features you’ve owned and shipped. We care about the boring infrastructure too, so share how you've contributed to keeping systems up and running smoothly. This is your chance to shine!
Embrace Ambiguity:We know that not every decision has a clear right answer, so don’t shy away from discussing how you've navigated ambiguous situations in your previous roles. Share examples of your judgement calls and what you learned from them — it shows us you're ready for the challenges ahead.
Use AI Wisely:If you've used AI tools in your workflow, let us know! We’re looking for confident and responsible use of these tools, so explain how they’ve helped you in your projects. Remember, we want to see you as a force multiplier, not just someone who follows trends.
How to prepare for a job interview at Voy
✨Know Your Tech Inside Out
Make sure you can discuss your past projects in detail, especially the architectural decisions you made. Be ready to explain trade-offs and what you learned from any challenges you faced. This shows you have a deep understanding of backend systems.
✨Showcase Your Ownership
Prepare examples that highlight how you've owned major features or projects from start to finish. Talk about the impact of your work and how it contributed to the overall success of the product. This is crucial for a role where you'll be expected to take full responsibility.
✨Embrace Ambiguity
Be prepared to discuss how you've navigated ambiguous situations in the past. Share specific instances where you had to make judgement calls without clear right answers. This will demonstrate your ability to thrive in a startup environment.
✨AI Tools as Your Allies
Familiarise yourself with how you've effectively integrated AI tools into your workflow. Be ready to discuss specific examples where these tools enhanced your productivity or decision-making, while also knowing when to rely on your own expertise.
