Founding Software Engineer | Python | Early-Stage AI Start-Up | London

Founding Software Engineer (Python) required to build, scale, and own the technical foundation of a well backed, early-stage AI start-up from day one. This is a rare opportunity for a strong Python Software Engineer to join at the ground floor, working directly with the founders to define the architecture, ship core systems, and shape the long-term technical vision of the company. You’ll have genuine ownership, influence key technical decisions, and play a central role in taking the product from early traction through to scale.

About you:5+ years of professional Software Development experienceExpert in PythonEnd-to-end ownership of features and systems, from design through to productionComfortable working across the stack, including frontend development with TypeScript and ReactThrive in early-stage. fast-paced environmentsHigh ownership mindset with strong problem-solving skills

Bonus Points Early-stage start-up experienceExperience building or working with AI-powered systems Why JoinFounding-level impact with real influence over product, architecture, and technical directionMeaningful equity in a well-backed, early-stage AI start-upOpportunity to work directly with the founders and shape the company from day oneBuild and scale a product using modern technologies and real-world AI use casesHigh-trust, low-bureaucracy environment with flexibility and autonomy