Founding Engineer (full-stack TypeScript)

• Experience with AI APIs, LangChain, or real-time collaboration tools.
• Startup or zero-to-one build experience.
• Experience in UI/UX interaction design.
• Experience with deployment and building your own projects.
• Interest in behavioural science, psychology, or workplace culture.

We are backed by one of the most well-known VC firms in the world. The successful candidate will be invited to join us for a fully-expensed three-month residency in San Francisco at the start of the new year. Human progress has always been driven by communication. Now, for the first time, machines can participate - and it changes everything. We're building the next evolution of how people and organisations communicate and coordinate. By combining cutting-edge AI with human-centred design and quantitative social science, we're creating the future of work - where intelligent systems take on the burden of coordination, freeing people to focus on deep, meaningful work. We are a small elite team and are led by a unique, diverse group of Oxford and MIT scientists with world-leading experience. We can't say much more publicly yet, but here's what you should know: * Our mission: To reinvent how teams connect, collaborate, and create impact together: eliminating the friction, overload, and miscommunication that slow people down. * Our product: AI-powered, behavioural science-driven collaboration tech used by early design partners at forward-thinking organisations. * Our culture: Relentlessly curious, execution-driven, and human-first. We value deep thinking, rapid iteration, and making beautiful, intuitive tools. What you'll do: * Build, ship, and own end-to-end features across our modern stack. * Work directly with the founders (Oxford/MIT backgrounds, AI & product design expertise) to turn ambitious ideas into elegant, working code. * Shape the core architecture for scalability, security, and speed as we grow from prototype to product. * Collaborate with design to create experiences that feel seamless and delightful. * Push the frontier of agentic AI and be part of building a generational company. You'll thrive here if you want to: * Engineer the Future: Bring professional full-stack experience (React, Node.js, TypeScript, PostgreSQL) with a strong CS education. Informal experience from lots of projects is enough - we just need evidence you're an experienced builder. * Write code that lasts: You know when to ship fast and when to engineer for scale without getting lost in over-engineering. We're looking for hackers who can manually write elegant code, but have mastered the use of AI coding tools - so for them, AI is not a crutch, it's a force multiplier. * Own your work end-to-end: You're comfortable moving fast in ambiguity, learning from feedback, and shipping with real autonomy. * Grow with the product: Your voice will directly shape architecture, features, and culture as we scale. * Be a builder at heart: You love to hack, experiment, and learn, and you're excited by the hard work and unique opportunities of an early-stage startup.