Jack & Jill
AI Founding Engineer at LEC AI
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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
AI Founding Engineer
Salary
Not Disclosed + Equity
Company Description
LEC AI is the technology arm of the London Export Corporation, a group with 74 years of trading history, now building a proprietary ecosystem of foundation models and agentic platforms to power a portfolio of specialized AI product companies.
Job Description
Join LEC AI as an AI Founding Engineer to build Bishop, a foundation model for structured data, and Donnie, an agentic orchestration layer. You will write production code daily, making high-stakes architectural decisions that power diverse applications across energy trading, sports markets, and risk pricing, while leading a small, elite engineering team.
Location
London, UK
Why this role is remarkable
- You will build foundation models (Bishop) and agentic systems (Donnie) from the ground up, moving beyond generic LLMs into high-value structured data.
- Backed by a 74-year trading legacy, LEC AI combines the agility of a startup with deep capital reserves and a compounding moat of proprietary training data.
- Choose your impact: either scale the core platform infrastructure or take ownership as the technical lead for a new product company within the ecosystem.
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What You Will Do
- Develop and ship production-ready code for Bishop's training pipelines or Donnie's multi-agent memory architecture every week.
- Architect the model serving infrastructure and data pipelines that handle real-world operational signals, prices, and time-series data.
- Lead and mentor a small, high-performance engineering team while working directly with the Group CEO on technical strategy.
The ideal candidate
- Approximately 8 years of experience building production systems at elite AI labs like DeepMind or OpenAI, or top-tier quantitative trading firms like Citadel.
- Deep technical expertise in foundation model fine-tuning, multi-agent orchestration, or low-latency distributed systems with a strong academic background from a leading institution.
- A builder mindset with recent hands-on experience; you are an exceptional engineer who prefers shipping code over sitting in management meetings.
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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