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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AI Engineer at Tracelight
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.
About this role
Role overview
About the 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.
What you'll do
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.
Who you are
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.
Why this role
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
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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.
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