Software Engineer (Mid / Senior / Staff / Principal)

the team is deliberate — the science isn't a separate function that hands things over; it sits inside

the team building the product. Our stack is Python, FastAPI, TypeScript, React/Next.js, PostgreSQL, GitHub, and Google Cloud Platform. Prior experience with these specific tools isn't required — we're happy to support your learning where you have less experience. Our most recent Principal Engineer hire came predominantly from a Java background, even though there's no scope to use Java in

the role. Who We're Looking For We don't have a fixed checklist of years, frameworks, or job titles. The work is what matters, and the people who do it well tend to share three things. They take ownership of problems, not just tasks. The work here often starts ambiguous — a customer need that isn't fully formed, a capability that needs shaping into a product, a trade-off no one has made yet. We're looking for engineers who see that as the interesting part, rather than something to be resolved by someone else before they begin. They have good judgement under uncertainty. Most of the decisions that matter are trade-offs: speed vs rigour, scope vs polish, building now vs validating further. We're less interested in whether you reach exactly the same answer we would, and more in whether you can reason about the trade-off clearly and explain why you landed where you did. They ship and learn. Thinking carefully about a problem is necessary but not sufficient. The engineers who thrive here are the ones who get things in front of customers, learn from what happens, and iterate — rather than waiting for the design to be perfect before anything moves. A note on experience. We've hired engineers across a wide range of experience levels and stacks, and the pattern is clearer than we expected: years matter less than what you've actually owned. People thrive here at every stage — what they share is a track record of having taken real responsibility for real problems, whether that came after two years or twenty. The ones who tend to struggle are those who've mostly worked inside tightly defined roles where the hard decisions were made elsewhere — not because they aren't capable, but because the work demands a kind of ownership that usually has to be learned by doing it. If you've owned something meaningful end to end — shaped it, made the trade-offs, shipped it, and lived with what happened next — we'd like to hear from you, regardless of how long that took.

How We Work Small team, experienced and low-ego, with fast feedback and few layers. People care about getting to the right answer rather than being right — founders included. Disagreement is welcome and decisions are explained. We're based in Soho, central London, and spend most of our week together in the office. Collaboration here is real, not ceremonial — the work genuinely improves when people are in the room. Plenty of companies will tell you they value work-life balance while filling your calendar with 7pm "optional" meetings and stocking the kitchen so you never leave. We're not that. People here have kids, partners, dentist appointments, school plays, and the occasional delivery that somehow needs a signature in the middle of the day. The expectation is simple: do excellent work, and have an actual life alongside it.

Benefits Equity. All full-time employees are enrolled in our share options scheme at the end of probation — explained in detail when you join. Pension. We match your individual contributions up to 8% (16% total) under a net pay structure. Private healthcare with BUPA. Unlimited leave — and we genuinely expect you to take it. £1,000 annual L&D budget to spend as you see fit. Cycle to Work Scheme. Kit. Laptop plus any accessories you need (monitor, keyboard, etc.) to do your best work. \n \n £80,000 - £160,000 a year Depending on experience and level. The range is wide because we hire from mid-career through to principal, and we'll pitch an offer to where you actually fit rather than to the top or bottom of the band. \n

A meeting lands on your calendar

If they’re a yes, I book the chat. You show up — that’s the whole job-hunt.