Jack & Jill
Member of Technical Staff (+ Equity) at Mantic
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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
Member of Technical Staff
Salary
Not Disclosed + Equity
Company Description
Mantic is a London-based AI startup that recently raised a $23M seed round to solve judgmental forecasting. Backed by a world-class team from DeepMind and Citadel, Mantic builds AI systems that outperform human superforecasters in predicting complex geopolitical, economic, and technological events.
Job Description
You will push the frontier of forecasting accuracy by developing and refining LLM agents. Working in short, high-impact cycles, you'll improve agent scaffolding, conduct research experiments, and build internal benchmarks. This role focuses on enabling LLMs to express complex probability distributions and reason through ambiguous, real-world data to drive radical improvements in global decision-making.
Location
London, UK
Why this role is remarkable
- Work at the frontier of AI forecasting with a system already recognized by Polymarket as the best-performing AI in the field.
- Collaborate with an elite technical team featuring alumni from Google DeepMind, Citadel, Goldman Sachs, and top-tier academic institutions like Oxford and Cambridge.
- Join a well-funded mission with a recently closed $23M seed round following a $4M pre-seed, providing significant runway and growth potential.
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What You Will Do
- Design and implement advanced scaffolding for LLM agents to improve reasoning and research capabilities.
- Create and maintain internal benchmarks to evaluate forecasting accuracy across diverse domains like geopolitics and economics.
- Analyze model failures and bad predictions to iteratively refine how AI systems express complex probability distributions.
The ideal candidate
- Possesses exceptional coding ability and a strong background in conducting technical research projects, particularly with LLM agent frameworks.
- Demonstrates deep comfort with statistics and the ability to apply quantitative reasoning to uncertain, judgmental forecasting problems.
- Brings a high-performance work ethic and evidence of exceptional achievement, likely proven through experience in AI labs, quant finance, or academic research.
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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