As the first technical hire at a well-funded defence tech startup, you will design and build a novel class of Large Behavioural Models from scratch. You’ll lead technical architecture, pre-training infrastructure, and multi-agent simulations to protect democracies against information warfare, enjoying significant intellectual ownership over a mission-critical platform with global security implications.
Founding Engineer at well-funded defence tech startup
Looking for a rare opportunity to build frontier AI for national security? This well-funded defence tech startup is hiring a Founding Engineer to develop Large Behavioural Models from scratch. Based in London or Oxford, you'll own the technical architecture and pre-training infrastructure for a platform designed to protect democracies against information warfare. If you have experience pre-training models at a frontier lab and want a mission-driven role with significant equity, this is your chance to lead a greenfield build that matters. Join a fast-growing team tackling some of the most complex challenges in cognitive security today.
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Location
London, United Kingdom
Compensation
£90k-£150k + Equity
Company
Confidential company
Role overview
About the company
Well-funded defence tech startup
What you will do
- Design and architect foundational Large Behavioural Models to simulate complex adversarial information campaigns across multiple platforms.
- Build and scale the pre-training infrastructure and evaluation frameworks necessary to support sophisticated agent-based simulations.
- Collaborate directly with leadership to define the product roadmap and technical direction of the entire modelling platform.
Who this is a fit for
- Proven experience pre-training foundation models from scratch at a frontier AI lab or equivalent high-performance research environment.
- Exceptional engineering skills with the ability to thrive in a high-ambiguity, greenfield environment as the first technical hire.
- Deeply motivated by the mission of cognitive security and eligible for UK Security Clearance to work on sensitive defence applications.
Why this role is remarkable
- Unique opportunity to build frontier AI models specifically for cognitive security and national defence from the ground up.
- Backed by top-tier investors with significant pre-seed funding to tackle a high-stakes, globally relevant problem.
- Founding role offering substantial equity and the chance to define the technical culture and architecture of a mission-driven company.
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If your profile’s a match and Confidential company wants to meet, Jill will make the intro. In the meantime, Jack will send you excellent alternatives.