Salary: £60,000 - 65,000 per year Requirements: Full Stack Engineer with experience in end-to-end development Comfortable working with TypeScript and maintaining live systems Experience building new functionality in existing platforms Product-minded and pragmatic approach to development Strong communication skills, especially with non-technical stakeholders Enjoys early-stage start-ups and taking ownership Familiarity with MongoDB and a product-led engineering environment Responsibilities: Own and evolve a live TypeScript-based system used daily by the business Work closely with founders and stakeholders to stabilize and improve core functionality Lead greenfield development of new internal tools Build systems focused on data capture, operational insight, and reporting Influence architecture, tooling, and technical direction as the engineering function grows Help shape software that supports sustainability-driven outcomes Technologies: MongoDB TypeScript JavaScript Fullstack More: We are an early-stage UK GreenTech start-up dedicated to building software that supports sustainability-focused real-world systems. We offer a high-impact role in a small, ambitious team where your engineering decisions will directly influence our operations and growth. With a flexible working pattern across London, Manchester, or Edinburgh and a competitive salary of circa £65,000, we provide an environment that encourages autonomy, responsibility, and a chance to grow alongside us as we scale. last updated 5 week of 2026