We're solving foundational problems that Apple Intelligence, Gemini, and others haven't cracked yet. Our approach combines building cutting-edge systems for ingesting and understanding data with our powerful multi-stage reasoning models.

Our early results are promising, we're well-funded, and we're building a team of brilliant minds—sharp problem solvers, researchers, and engineers who thrive on tackling novel challenges in a dynamic, highly technical environment.

If you truly want to do the best work of your career, join us. You'll work directly with Catapult's co-founders—Rav, a 2x startup founder and former EMEA Lead at Meta, and Greg, a former Cambridge researcher who taught mathematics, statistics, theoretical CS, and AI.

About the Role

Job Title: Founding Senior Engineer
Location: London (willing to sponsor visas)
Employment Type: Full-time
Department: Engineering

Responsibilities

• Solve tough algorithmic problems and manage the entire tech stack.
• Build highly performant desktop applications (both frontend and backend).
• Work on algorithmic development and collaborate closely with AI engineers.

You’ll love this role if you enjoy…

• Identifying and solving very challenging technical and research-level problems.
• Building products end-to-end (from algorithm development, experimentation, all the way to UI/UX).
• Learning and keeping abreast of current research and developments related to LLMs/NLP, vision, and more.
• Helping identify and tackle any technical challenge that may emerge.
• Pushing beyond your comfort zone and maximizing your potential.

Requirements and Experience

• 5+ years of experience working on similar projects.
• Strong programming skills, ideally in Typescript, Python, and Rust/C++.
• A strong track record of solving difficult problems in either an academic or industrial setting.
• Proven ability to manage engineering workflows (e.g., building robust and scalable products, working with user requests) and ideally also managing scientific processes (e.g., forming and testing hypotheses).
• Experience working with cloud infrastructure providers and database technologies (e.g., SQL/no-SQL).
• Ability to self-organize and work independently.
• Based in, or willing to relocate to London.

Nice to Haves

• Experience working with NLP/LLMs or other AI/ML.
• ML/statistics/mathematics background or experience.
• Experience working on open-source projects, interesting side projects, or contributing to Stack Exchange (or similar).

What We Offer

• Shape the future of Contextual Intelligence, working closely with our co-founders.
• Competitive salary and equity package.
• Private healthcare, wellbeing, and lunch allowances.
• All the equipment you need to be and feel your best.
• We sponsor work visas so that you can come build with us in person in London!