Jack & Jill
Founding Engineer at Ralio
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This is a job that Jill, our AI Recruiter, is recruiting for on behalf of one of our customers.
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Job Title
Founding Engineer
Salary
Not Disclosed
Company Description
Ralio.co is a London-based payments infrastructure startup building the connectivity layer for AI agents to securely facilitate transactions via cards, bank accounts, and stablecoins.
Job Description
As a Founding Engineer at Ralio.co, you will build the foundational infrastructure enabling AI agents to execute secure financial transactions. You'll design programmable spending limits, intent verification systems, and fraud checks. This high-impact role involves shaping the technical vision from scratch, moving from initial architecture to full-scale deployment in a fast-paced environment.
Location
London, UK
Why this role is remarkable
- Shape the future of "AI Commerce" by building the essential financial guardrails and connectivity layer that allows autonomous agents to move money securely.
- Join as a founding member with significant equity and the ability to define the technical roadmap, culture, and architecture from day zero.
- Work at the cutting edge of Fintech and AI, integrating agentic frameworks like LangGraph and OpenAI Agents SDK with robust payment rails.
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What You Will Do
- Own the end-to-end delivery of core product features, spanning architecture, secure APIs, and frontend interfaces using Next.js and Supabase.
- Architect and implement sophisticated payment controls, including programmable spending limits, human-in-the-loop confirmations, and automated fraud prevention systems.
- Collaborate directly with the founders to translate high-level product goals into scalable technical implementations across Python and TypeScript environments.
The ideal candidate
- Proven experience building secure payment or fintech infrastructure, with a deep understanding of compliance standards like PCI-DSS, KYC, and AML.
- Hands-on expertise with Large Language Models (LLMs) and agentic frameworks such as Autogen, LangGraph, or the OpenAI Agents SDK.
- A versatile builder who thrives in 0-to-1 environments, capable of navigating ambiguity and making foundational decisions about infrastructure and scalability.
Who are Jack & Jill?
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.
Get help with your application
Your very own career expert that helps elevate your application to the next level.
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.
How does this work?
- 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 it's a match and the company wants to meet you, they'll make the intro. In the meantime, if you'd like, Jack will send you excellent alternatives.
We never post fake jobs
This isn't a trick. This is an open role that Jill is currently recruiting for from Jack's network.
Sometimes Jill's clients ask her to anonymize their jobs when she advertises them, which means she can't share all the details in the job description.
We appreciate this can make them look a bit suspect, but there isn't much we can do about it.
Give Jack a spin! You could land this role. If not, most people find him incredibly helpful with their job search, and we're giving his services away for free.
“It took my CV and asked me questions relevant to understanding what kind of jobs to suggest for me. Suggestions were almost perfect. Jobs were exactly what I’ve been looking for.”
Jessica, London
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