Healthtech-1
Senior AI engineer
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We're unlocking access to the NHS, because healthcare is not truly free until it's truly accessible 💙 The world’s best healthcare, for free. It's not a new idea, it's called the NHS. But the largest healthcare provider is fundamentally broken. Patient satisfaction is at an all time low, and the biggest reason cited is lack of access. So we’re on a mission to fix it with technology that actually works. We're building the front door of UK healthcare, creating a future where one billion NHS appointments are transparent and instantly bookable, and patients are guided to the right service first time using AI. We're developing critical national infrastructure. Today, 26% of GP practices in England use our patient registration software, while one in five GP practices in London use Bookable Search to help new patients find and book appointments seamlessly. Our latest product, Bookable Navigator, extends this vision by automatically booking appointments for existing patients. We operate from within a working GP practice in East London 🏥 We're backed by Y Combinator, Innovate UK and the NHS Clinical Entrepreneur Programme, and were previously ranked the 8th fastest-growing startup in the UK and 33rd fastest-growing in Europe 🚀
⛩️ Our Principles
Exciting challenges lie ahead. Guided by our principles, we’ll meet these challenges with a thoughtful and caring approach. These principles drive everything we do at Healthtech-1:
- 💙 Care deeply
- 🏋️♀️ Work hard
- 🤝 Be your word
- 💬 Trust in radical truth and transparency
- 🚀 Do your life's best work
- 🥳 Find the fun
Read more about our principles and our "why" in the Healthtech-1 Handbook.
Why this role matters
35% of NHS staff time is spent on admin. That’s the opportunity. Our first product is already used by 26% of GP practices in England, and we’re now scaling a platform that transforms how patients and clinicians interact with healthcare.
We are hiring Senior AI Engineers who have built real AI products. We mean people who have deployed AI products, have measured and monitored their efficacy, iterated on their implementation, and launched them to users who rely on the accuracy of the result. Curiosity about AI isn't enough.
The interesting problem here is developing a clinically capable AI to handle high-stakes care navigation scenarios. Just like our NHS clinicians, that means a combination of training, context and totally defensible decisions 100% of the time.
As a Senior AI Engineer, you’ll own and shape the experiences used every day by patients and clinicians where performance, clarity, and reliability directly impact real patients.
What you'll own
- End-to-end product features across the frontend, backend, data, and API layers, owned through to production
- AI-powered care navigation
- Integration work that turns model providers and AI tooling into product experiences people can depend on
- Evaluation and feedback systems that make AI behaviour measurable and improvable over time
- Trust surfaces that enable us to become a certified medical device and achieve national procurement
- Close work with founders, customers, and domain experts, turning ambiguity into shipped product
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Our Tech Stack:
- Fullstack (Backend leaning): React, TypeScript (core focus)
- APIs: Designing and consuming scalable, well-structured services
- Data: Working with production systems and performance considerations
- AI: Integrating modern AI models into real-world healthcare workflows
Experience in scaling product environments or high-stakes domains (health, finance, infra) is a strong advantage.
We’re based inside a GP practice, so you can walk downstairs and see the real-world impact of your work.
Why join our engineering team:
- Build technology that actually matters at national scale
- Solve complex, meaningful problems with real-world constraints
- Work in a high-performing, product-led team
- Have real ownership, real responsibility, and real impact
- Engineering velocity through automation, AI-assisted development, and internal tooling that lets a small team do the work of a much larger one
What we're looking for:
- At least 5+ years of professional engineering experience, with broad full-stack range
- You've shipped AI features that people rely on, and you can point to them
- You can talk concretely about prompts, evals, failure modes, latency, cost, and the UX tradeoffs of building with language models
- You use AI coding tools fluently and have strong, earned opinions about where they help and where they fall down
- You've come from somewhere that held a high bar, such as FAANG, a top AI lab, or a respected product-engineering environment
- You want more ownership, speed, and upside than those environments tend to offer
- You have strong product taste and can make pragmatic calls without waiting for perfect requirements
💙 A bit about us
💙 We’re all NHS staff. We’re inside-outsiders. Trusted with one of the biggest datasets in the world.
🏥 Our office is within a GP practice. This is our unfair advantage. Got a question? Pop down the corridor. Want to learn how your work affects real patients? Pop downstairs to reception.
💪🏼 4 days in the office and 1 day WFH (for most roles). We highly prioritise in-person communication and prefer candidates who want to work 4+ days a week in the office. Our anchor days are Mon, Tues, Thurs and Fri. Homemade breakfast and lunch are on the house every day when you're in the office, ensuring you're fuelled for success!
🌀 We work in growth cycles. Every 8 weeks we do the same set of activities. 1 week outside of Business-as-Usual to research, strategise, plan our work. 7 weeks to knuckle down and deliver it.
🤝 We’re highly collaborative. One of the benefits of a high trust team is we often work autonomously, but as a team we’re very collaborative by nature. Two heads are often better than one, and we frequently lean on each other to solve problems together.
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🤜🏽 We’re backed by industry leaders. We’re on the DigitalHealth.London Accelerator, backed by the NHS Clinical Entrepreneur Program, winners of the London Business School Healthtech Challenge, Innovate UK, and Y Combinator (S23).
🚀 An opportunity for real upside
- 💉 Paid volunteer days. We offer an additional 2 paid days off per year where you can give back to your mission of choice.
- 🎢 Every 8 weeks we take a day off to socialise as a team. In the past we’ve hiked box hill, raved at All Points East and spent one rainy day at Thorpe park. This works out as 6 working days a year.
- 📚 Learning budget of £250 annually and time off to spend it - we care about this; this is flexible and based on need but everyone will receive a yearly allocation towards their continual growth.
- 🍽️ Homemade breakfast and lunch are on the house when you're in the office, ensuring you're fuelled for success!
- 🥡 Team takeaways every Monday night
- 🥗 Health and fitness budget of £60 per month - see more here
- 🧘♂️ An additional 7 days of paid leave is available if you want to take time to learn how to meditate.
- 💫 Tooling; You’ll have your choice of operating systems and any additional tools you need to do your best work (e.g. keyboard, additional monitors, mouse etc). If you’re on our Engineering teams you’ll receive the latest MacBook Pro and our Growth & Ops teams receives a MacBook Air.
- 🩺 We know health and family come first which is why we have a generous sick leave policy with additional days that can be taken for mental health leave.
- ✈️ We prioritise time outside of work to bond, once a year we’ll holiday together! Destination chosen by popular vote. In 2025, we spent 8 days in a surf camp in France!
- 👎 No private medical insurance, because we believe in the NHS and we are here to improve it!
- 🐥 Parental leave: Post passing probation it is: statutory - 6 weeks 90% pay then, SMP for 33 weeks; if you've been an employee for a year: 12 weeks 100% pay then, SMP for 27 weeks; and if you have been here for 2 years: 18 weeks 100% pay then, SMP for 21 weeks. This will improve over time. We also include up to £9,000 of childcare contribution for primary caregivers to support a five-day return where possible.
- 👪 Fertility leave. We understand how difficult a fertility journey can be. This is why we give an extra 5 days off per year if you or your partner are going through fertility treatment.
- 🐖 Pension - We operate a standard 3% employer contribution and employees auto-contribute 5% of their salary. We use Nest as our provider.
- 🏡 Local living benefit - A one-
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