As the Founding Engineer/CTO at AgentBay, you will build the technical foundation for autonomous agentic commerce. You’ll develop a novel risk engine quantifying “alignment risk” using ML and LLMs, integrate complex payment flows, and design end-user UX. This is a hands-on role defining a new category alongside seasoned fintech and big-tech founders.
Founding Engineer / CTO at AgentBay
Are you ready to build the infrastructure for the future of commerce? AgentBay is creating the trust layer for autonomous AI agents, solving the critical 'alignment risk' that prevents shoppers from delegating financial decisions. As Founding Engineer/CTO, you’ll work with veteran founders from Stripe, Plaid, and Amazon to build a first-of-its-kind risk engine and payment protocol. This is a high-ownership, 0-to-1 role for a senior engineer with deep ML or payments expertise who wants to define a new category in London's booming AI scene.
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Location
London, United Kingdom
Compensation
£140k + Equity
Company
AgentBay
Role overview
AgentBay is a London-based startup building the trust layer for agentic commerce. Founded by alumni from Stripe, Plaid, and Amazon, they are developing a first-of-its-kind risk engine and payment infrastructure to protect consumers and merchants as AI agents begin to handle autonomous transactions and financial decisions.
What you will do
- Architect and build a first-of-its-kind risk engine from scratch using a blend of traditional supervised learning and LLM-as-a-judge methodologies.
- Develop and embed secure risk harnesses within agentic commerce protocols and payment flows, partnering with ecosystem players to integrate bleeding-edge technology.
- Lead the end-to-end product engineering cycle, from backend machine learning models and payment orchestration to crafting high-craftsmanship, “calm tech” user experiences.
Who this is a fit for
- A senior-level engineer who has shipped complex production software end-to-end, ideally with experience taking a product from 0-to-1 in a fast-paced environment.
- Deep technical expertise in either machine learning infrastructure or payment systems, with the architectural maturity to make sharp decisions under conditions of high uncertainty.
- A high-agency, low-ego builder who values product velocity and craftsmanship, possesses the UK right to work, and enjoys a high-energy, collaborative startup culture.
Why this role is remarkable
- Join as a founding team member with a direct line to strategy and the chance to define a brand-new category in the AI and fintech space.
- Work alongside founders with elite pedigrees from Amazon, Google Pay, Stripe, and Plaid who have scaled massive systems and launched successful products.
- Solve “alignment risk,” one of the most critical hurdles for the future of agent-led commerce, building infrastructure that doesn’t exist anywhere else today.
How Jack & Jill work together
I get to know what you’re great at, then find roles you’d never find yourself.Ok, I'll go first. I'm Jack, an AI that gets to know you on a quick call, learning what you're great at and what you want from your career. Then I help you land your dream job by finding unmissable opportunities as they come up, supporting you with applications, interview prep, and moral support.
I recruit from Jack’s network and make the intro when I spot a great match.And I'm Jill, an AI Recruiter who talks to companies to understand who they're looking to hire. Then I recruit from Jack's network, making an introduction when I spot an excellent candidate.
Jack gets to know what you're great at and what you want next, then searches 15 million jobs daily and helps you discover roles at companies like this.
Meet Jack
What happens next?
Jack’s an AI agent for job searching and career coaching. He works for you.
Jill is the AI recruiter working for the company. She recruits from Jack’s network.
If your profile’s a match and AgentBay wants to meet, Jill will make the intro. In the meantime, Jack will send you excellent alternatives.