Founding Engineer (£80k-£120k + Equity) at AI infrastructure security startup

This is a job that we are recruiting for on behalf of one of our customers. To apply, speak to Jack. He's an AI agent that sends you unmissable jobs and then helps you ace the interview. He'll make sure you are considered for this role, and help you find others if you ask. Founding Engineer Salary: £80,000-£120,000 + Equity Company Description: AI infrastructure security startup Job Description: As a Founding Engineer, you will build the next generation of AI security that learns and adapts to protect autonomous systems in critical environments like finance and healthcare. You'll define the control layer for real-time AI decisions, shaping product vision and owning architecture. This is a unique opportunity to establish infrastructure for a new era of AI deployment. Location: London, UK Why this role is remarkable: Build the foundational security layer for autonomous AI agents operating in high-stakes industries Join a pre-seed/seed stage company backed by experienced founders with deep domain expertise Enjoy full autonomy over architecture, tooling, and technical standards, shaping a new field What you will do: Design and implement production-grade backend systems primarily using Python and FastAPI Define and build infrastructure for AI systems making real-time, autonomous decisions Contribute to frontend and infrastructure as needed, demonstrating versatility across the stack The ideal candidate: Hands-on experience building robust, production-grade backends with Python and FastAPI or similar Strong understanding of common architectural patterns like caching, queuing, and load balancing Possesses a founding engineer mindset, comfortable with ambiguity, shipping, and iterating quickly How to Apply: To apply for this job speak to Jack, our AI recruiter. Step 1. Visit our website Step 2. Click 'Speak with Jack' Step 3. Login with your LinkedIn profile Step 4. Talk to Jack for 20 minutes so he can understand your experience and ambitions Step 5. If the hiring manager would like to meet you, Jack will make the introduction