Software Engineer

Founding Engineer / London If you don’t want to inherit someone else’s roadmap, instead you want to build the product, shape the technology and help create the company behind it then this is one for you. An early-stage AI company is looking for a Founding Engineer to turn big ideas into exceptional products. You’ll join early enough to influence everything, from the first lines of code to the product’s long-term direction. What you’ll own Build AI products from zero to one, take ideas from concept to production and iterate with real users.Own the full stack, build across Javascript, React, TypeScript, Python and PostgreSQL.Push the boundaries of AI, develop production systems using LLMs, agents, retrieval and emerging AI capabilities.Shape the technology, influence architecture, engineering standards and technical direction.Work directly with founders and customers, identify problems and turn ideas into products people genuinely want. Why join? Founding-team influence: Help define the product, culture and future engineering team.Real autonomy: Make decisions, move quickly and take ownership without layers of bureaucracy.Meaningful equity: Share in the value you help create.A genuine zero-to-one opportunity: Build something ambitious at the frontier of AI. What you bring 4+ years of professional software engineering experience.A strong track record of shipping production software.Full-stack skills across modern frontend and backend technologies.Hands-on experience with production LLMs, agents, retrieval or similar AI systems.Strong product instincts and the ability to turn ambiguity into working software. Build the product. Shape the company. Share in its success.