Founding Software Engineer (ML + Payments)

Founding Software Engineer (ML + Payments)

Full-Time No working from home possible
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Hybrid in London Office

Up to Β£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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Founding Software Engineer (ML + Payments) employer: Few&Far

Join a pioneering AI and robotics startup in London as a Founding Engineer, where you'll have the unique opportunity to shape cutting-edge technology from the ground up. With a strong emphasis on collaboration and innovation, this role offers genuine ownership and the chance to work alongside an exceptional founding team, backed by world-class investors. The vibrant work culture fosters personal growth and encourages tackling complex engineering challenges, making it an ideal environment for those looking to make a meaningful impact in the tech industry.

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Contact Details:

Few&Far Recruitment Team