£450 - £550 per day
Outside Spy
London, UK
Senior Fullstack Engineer £450-550 per day 6 months Outside IR35 Hybrid - 2 days per week on site (London) We're supporting a high-growth, AI-driven product business building a scalable platform from the ground up. They operate as a small, high-calibre team with high standards, low bureaucracy, and real ownership. They're looking for a Senior Fullstack Engineer (Back End leaning) to take responsibility for core Back End systems and help shape product direction in fast-moving environment. This is a role for someone who is comfortable building without perfect specs and takes initiative naturally. Requirements Strong Node.js and GraphQL (NestJS) experience PostgreSQL, Prisma, and solid data structures/OOP fundamentals Experience building high-concurrency, event-driven systems GCP experience (Terraform desirable) Experience working with AI/LLMs in production environments Strong focus on system reliability (monitoring, alerting, logging, testing,...