Salary: £90,000 - 100,000 per year Requirements: Strong experience building and deploying production AI/ML systems Solid backend or full-stack engineering experience using Next.js, TypeScript, Express Strong understanding of system design, scalability, and performance optimization Experience leading projects or teams, or readiness to step into a leadership role Experience working on high-impact, user-facing products Experience within consumer platforms such as social media or events (desirable) Exposure to behavioral data, user modeling, or network-based systems (desirable) Background in early-stage startups or building products from zero to one (desirable) Familiarity with privacy-first design and secure data architectures (desirable) Responsibilities: Design and build AI/ML-powered matching or recommendation systems Develop scalable backend systems in Express Work in a full-stack environment using TypeScript & Next.js Confidently work on Cloud technologies, preferably GCP Create and optimize feedback loops to continuously improve platform outcomes Ensure high standards of performance, reliability, and data security Contribute to technical strategy and architecture decisions Support the transition from individual contributor to team leadership as the company scales Collaborate closely with product and leadership teams to shape the roadmap Technologies: AI Backend Cloud GCP Support Network Security TypeScript CTO Machine Learning NextJS More: We are an early-stage, well-funded tech startup based in London, offering hybrid or remote working options within the UK. Our team is focused on building a next-generation platform used across various social media and events platforms. We have a strong product vision and an MVP already in place. As our first senior technical hire, you will play a crucial role in shaping the future of our platform by taking ownership of core technology and building a talented engineering team. We offer a competitive salary of £90,000–£100,000 plus equity, along with benefits such as a pension and flexible working arrangements. last updated 14 week of 2026