Principal Full Stack Engineer

Principle Full Stack Engineer - Liverpool - 2 days a week in office - up to £95k A well-established organisation in the automotive marketing space is hiring a Principal Full Stack Engineer to join at a key moment of transformation. Their platforms power high-intent buying journeys, processing hundreds of thousands of customer interactions each year for some of the world’s biggest automotive brands. They’re now rebuilding a core platform from the ground up on a modern Node.js stack, while reshaping the engineering function around an AI-first approach. Strong foundations are already in place, but there’s still plenty of greenfield and real opportunity to shape both the product and how the team operates. The role: Principal Full Stack Engineer (backend-leaning). You’ll be central to the rebuild, shaping architecture, setting standards and working directly with product and leadership. Small, senior team. High ownership. What you’ll do Lead design of key parts of a brand-new platformBuild and own backend services, APIs and data pipelines at scaleMake architecture decisions that the wider team builds onStay hands-on while mentoring senior engineersPartner closely with product and leadership on priorities and trade-offsHelp embed AI tooling into everyday engineering workflows What we're looking for: Deep expertise building production systems in Node.js / TypeScriptStrong full-stack background with React & Next.jsProven track record making architectural decisions at scaleCloud experience in Azure preferred, AWS/GCP welcomedAlready using and embracing AI coding tools in day-to-day developmentSenior presence with the ability to lead teams, influence stakeholders, and drive technical direction Principle Full Stack Engineer - Liverpool - 2 days a week in office - up to £95k