Hybrid in London Office
Up to £140k + Meaningful Equity
They’re building the trust layer for agentic commerce (yes, they know “agentic” is doing a lot of work right now, bear with them).
Here’s the pitch: soon, commerce will be agent-led. You tell an agent what you want, it goes and buys it. Autonomously. No shopper is going to hand over their card details to a robot unless they’re sure it’ll buy the right thing – the right size nappies, not the ones your baby outgrew three months ago. That’s not fraud, that’s not a hack, it’s a totally new risk category they call “alignment risk.” And right now, nobody has solved it. They’re building the buyer-protection layer and risk engine to fix that.
What you’ll actually build:
- The risk model – go from bootstrapped spreadsheets to an actual risk engine that can quantify “alignment risk” using whatever mix of supervised learning, LLM-as-judge, and other tricks gets you there. Nothing like this exists yet, so you’re not implementing a known playbook, you’re writing it.
- The payment flows – build on the newest agentic commerce protocols so the risk layer plugs into real payment flows, sometimes building those flows from scratch alongside partners. Uncharted territory, bleeding-edge tech, straight to production. What could go wrong.
What they need:
A founding engineer who’ll build the whole thing end-to-end with the founders Backend ML, payment orchestration, the lot.
- You’ve shipped production software end-to-end. Bonus points the closer it was to an actual 0-to-1 story.
- You’ve got real depth in ML infra or payments (ideally both, but they’ll take one).
- You make sharp calls on imperfect information – you know when to over-engineer and when to duct-tape it and ship.
- High agency, low ego.
You’re the kind of person who:
- Cares (maybe too much) about craftsmanship.
- Gets genuinely curious about users, new tech, weird ways of building things.
- Has taste – you think about the UX implications of your choices, and you’re partial to calm tech over chaos.
- Ships fast, iterates faster, and doesn’t get precious about it.
- Brings good energy – robust debate, healthy appetite for silliness.
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