At a Glance
- Tasks: Build a groundbreaking risk engine and design user experiences for agentic commerce.
- Company: Join AgentBay, a London startup founded by alumni from Stripe, Plaid, and Amazon.
- Benefits: Competitive salary of £140k plus equity and the chance to shape the future.
- Other info: Collaborative startup culture with elite founders and exciting growth opportunities.
- Why this job: Be a founding member and define a new category in AI and fintech.
- Qualifications: Senior engineer with experience in complex software and machine learning or payment systems.
The predicted salary is between 78750 - 96250 £ per year.
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.
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.
Location: London, UK
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.
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.
The ideal candidate:
- 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.
Founding Engineer / CTO (£140k + Equity) at AgentBay in London employer: Jack & Jill
At Jack & Jill, we pride ourselves on being an exceptional employer that fosters a dynamic and innovative work culture. Our team enjoys a range of benefits including flexible working arrangements, professional development opportunities, and a collaborative environment that encourages creativity and growth. Located in a vibrant area, we offer unique advantages such as access to cutting-edge technology and the chance to work with industry leaders in AI-driven marketing strategies.
