You will build the AI operating system for financial modeling, creating a "Cursor for Excel" that automates complex decision-making workflows. Working in a high-intensity team of ex-Jane Street and Cambridge engineers, you will own the development of intelligent agents, fine-tuning pipelines, and context optimization to redefine a $100B category.
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London, United KingdomNot Disclosed
AI Engineer at $3.6M Seed-stage AI fintech backed by Chalfen Ventures
Join an elite team of ex-Jane Street and Cambridge engineers building the 'Cursor for Excel.' This $3.6M Seed-stage startup is reinventing financial modeling—the most important but worst-tooled form of programming. With 6 of the top 10 consulting firms already onboard and $600B+ AUM in the pipeline, you'll ship high-performance Rust and TypeScript code that powers the world's biggest business decisions. If you're a top-centile engineer who lives in Cursor and wants to own the AI operating system for finance, this Hoxton-based role is your chance to secure meaningful equity in a $100B+ category opportunity.
Overview
Role overview
Company
Tracelight
Software Development2-10 employeesLondon, United KingdomSeed (VC-backed)
$3.6M Seed-stage AI fintech backed by Chalfen Ventures
Backed by Chalfen Ventures, Acequia Capital, Inovo, Entrepreneur First, Charlie Songhurst, Suhit Gupta.
Responsibilities
What you will do
- Build and optimize sophisticated AI agents using MCP, custom tools, and advanced context management to handle complex financial logic.
- Own the full AI lifecycle including evaluation pipelines, data collection, Supervised Fine-Tuning (SFT), and Reinforcement Learning (RL).
- Rapidly ship high-quality features using modern AI-assisted workflows while collaborating with world-class designers to ensure a beautiful user experience.
Candidate profile
Who this is a fit for
- Top-centile engineer with deep experience building autonomous agents and a mastery of the modern AI tooling landscape like Claude Code and Cursor.
- Strong technical foundation in TypeScript and Rust, preferably with a background in competitive programming, high-frequency trading, or big tech.
- High-agency builder who thrives in a 5-day on-site environment and is determined to solve the "worst-tooled" form of programming in the world.
What makes it remarkable
Why this role is remarkable
- Join an elite engineering team featuring ex-Jane Street, Bloomberg, and Cambridge ML talent building the future of strategic decision-making.
- Exceptional market traction with 6 of the top 10 management consulting firms and PE funds managing $600B+ AUM already using the product.
- High-impact ownership where you will transition into a technical leader, shipping Rust and TypeScript code that immediately reaches global financial leaders.
Jack & Jill
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.
Meet Jack
Jack gets to know what you're great at and what you want next, then searches 14 million jobs daily and introduces you directly to hiring managers.
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.
Jack