Full Stack Engineer | TypeScript, Node.js & React | Greenfield API Platform Day rate: £450–£550/day (Outside IR35) Remote Working (UK) 6-month contract (with likely extension) The Role You will join a high-performing engineering team to build a brand-new API-driven platform, taking a proof of concept through to production. This is a hands-on full stack role with a strong backend focus, centred around designing secure, scalable REST APIs and building robust, data-driven user interfaces. You’ll be working within a microservices architecture, contributing to a core API service that underpins multiple products. Security is central to this role; you will own authentication, authorisation, and data access patterns across the stack. You’ll collaborate closely with a team of engineers and QA, contributing to architecture decisions, coding standards, and delivery practices in a fast-moving environment. You’ll be joining a globally recognised data organisation whose platforms are used by major enterprises, financial institutions, and governments to drive transparency and decision-making around environmental impact. This is a business where engineering directly influences real-world outcomes at scale. What You'll Have Experience With: TypeScript across backend and frontend Node.js services (NestJS or similar frameworks) React & Next.js frontend applications RESTful API architecture Microservices-based systems SQL databases (relational) ORMs such as Prisma Authentication & identity integrations Agile delivery within a collaborative engineering squad Nice to Haves: External identity providers (Entra ID, Okta, Google) Policy-based or rules-based authorisation Advanced database security features Microservices architecture at scale Experience working on greenfield products Why Join / Projects: You’ll build a greenfield API platform that will be exposed globally; high visibility, real impact You’ll solve complex, high-stakes problems around data security, identity, and access control You’ll work in a domain where engineering outputs directly influence sustainability, finance, and regulatory decision-making You’ll be part of a collaborative, senior team with strong engineering standards and ownership You’ll shape the architecture of a platform still in its early stages with genuine influence, not just delivery If this sounds up your street, please apply and I'll call you to chat further - they're keen to onboard this person. Full Stack Engineer (Contract) | TypeScript, Node.js & React | Greenfield API Platform