AI Engineer - Defence AI Start - UP - London

AI Engineer | Defence AI Start-Up | London AI Engineer required to join a rapidly growing London-based defence AI start-up building next-generation autonomous and AI-driven systems supporting critical national security missions. Founded by experienced operators and technologists, and backed by leading investors, the company is entering an exciting growth phase. This is an opportunity to build and develop cutting-edge AI systems, solve complex technical challenges, and work on technology with genuine real-world impact. You are:

• An AI Engineer with 3+ years of professional experience and strong software engineering fundamentals
• Highly proficient in Python, with experience building production-quality software
• Experienced building AI-powered applications, LLM integrations, AI agents, Machine Learning, or automation systems
• Comfortable taking AI systems from experimentation and prototyping through to production
• A strong problem solver who thrives in collaborative, fast-paced engineering environments
• Interested in AI, autonomy, defence, or mission-critical technologies Bonus points:
• Experience within defence, aerospace, robotics, autonomy, or security
• Previous experience in an early-stage or venture-backed start-up
• Experience building and deploying production AI / ML systems at scale Why join:
• Build AI systems that deliver real-world impact within defence and national security
• Join a well-backed, high-growth AI start-up with experienced founders
• Take significant ownership of technically challenging AI problems
• Work on cutting-edge AI, Machine Learning, agents, and autonomous systems
• Join a small, high-calibre engineering team solving genuinely complex challenges AI Engineer | Defence AI Start-Up | London