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Founding AI Research Engineer

Catapult· London Area, United KingdomEquitySponsorship
Posted 7 Aug 2026 · Added 8 Aug 2026, 00:57
AI summary

You'll work with Python, NLP/LLMs, AI/ML, cloud infrastructure, SQL/no-SQL, and optionally C++/Rust. Catapult builds personalised AI models that understand your full work context across email, calendar, Slack, Notion, and Google Docs. As a founding engineer, you'll own retrieval and reasoning systems end-to-end from research to product.

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Free Tailor for ATS: 10/10 runs left

At Catapult, we're building personalised AI models that understand the complete context of your work across email, calendar, Slack, Notion, Google Docs, and more.

We're pushing the frontier of what's possible in AI with personalisation, memory, and deep context - to help you work better than you ever thought possible.

Learn more about Catapult here: https://www.catapult.xyz/join

The role

The founding AI research engineer must be a brilliant problem solver, researcher, and engineer — and will be instrumental in shaping the scientific and research AI direction for Catapult. The work of this role focuses our retrieval and knowledge-base systems, our reasoning models, models for reasoning about information live on screen and from other applications, and more. In each case, the founding AI research engineer will be working end-to-end on each of these projects, taking them from inception all the way to product.

The ideal candidate must not just have strong scientific and technical abilities, but the ability to learn quickly and work in a very fast-moving environment.

You’ll love this role if you enjoy…

Identifying and solving very challenging technical and research-level problems

Building products end-to-end (from hypothesis and experimentation all the way to user-facing application)

Bringing expertise on and keeping abreast of current research and developments in NLP, vision, and more

Helping identify and tackle technical challenges that may emerge across the product

Pushing beyond your comfort zone and maximise your potential

Requirements and experience

5+ years of experience working on similar projects

A strong track record of solving similar problems in either an academic or industrial setting

A strong track record displaying the ability to manage both scientific (e.g. forming and testing hypotheses) and engineering workflows (e.g. building robust and scalable products, etc.)

The ability to read current research in the field (NLP/AI) and the ability to understand, implement, and ideally build upon those ideas.

Experience working with NLP/LLMs or other AI/ML

Strong programming skills (especially in Python)

Experience working with cloud infrastructure providers and database technologies (e.g. SQL/no-SQL)

Ability to self-organise and work independently

Based in, or willing to relocate to London (we are open to sponsoring visas)

Nice to haves

Deep ML/CS/statistics/physics/mathematics background or experience (research degrees or industrial research experience is ideal)

Some experience with C++/Rust

Experience working on open-source projects, working on an interesting side project, or contributing to Stack Exchange (or similar)

What we offer

Competitive salary andtrulygenerous stock options

Comprehensive Bupa Private Healthcare, and wellbeing allowances

Tax efficient pension scheme with salary sacrifice

All the equipment you need to perform at your very best

We sponsor work visas so that you can come build with us in person in London

Most importantly, helping shape the future of personalised AI!