Salary: £70,000 - 70,000 per year Requirements: 8 years of professional software development experience. 3 years hands-on experience with TypeScript, Node.js, and React. Good experience building and maintaining production systems. Comfortable working in a senior, autonomous engineering team. Good communication skills and fluency in English. Willingness to travel to company/client events (London-based). Desirable: Experience with functional programming (OCaml, Haskell). Prior experience in trading, finance, or real-time systems. Solid understanding of DevOps and operational concerns (logging, metrics, automation). Responsibilities: Design, build, and maintain features across the full stack of a high-performance trading platform. Work primarily with TypeScript (Node.js & React), Monorepo tooling, GitHub, GitHub Actions, Jest, Playwright, Redis, MS SQL, WebSockets, Docker, Kubernetes, and observability tools (Grafana, Prometheus, SonarQube). Take end-to-end ownership of features from design to production. Collaborate closely with platform and DevOps engineers on build pipelines, observability, and operational concerns. Communicate directly with clients to clarify requirements and propose solutions. Contribute to and improve automated testing practices. Participate in peer code reviews and maintain high engineering standards. Leverage LLM/AI-enabled development tools as part of day-to-day development. Technologies: AI DevOps Docker GitHub Grafana Haskell Jest Kubernetes LLM OCaml Playwright Prometheus React Redis SQL TypeScript NodeJS JavaScript Fullstack More: We are a well-established engineering consultancy specializing in high-assurance systems and advanced technologies. Our client is seeking a Senior Full-Stack Engineer to join an experienced team on a production-critical trading platform program. We offer a hybrid working model in Waterloo, London, with benefits including dedicated training days, an annual training allowance, company equipment, in-person team events, annual bonuses, stock options, a birthday off, and a generous employee referral program. We pride ourselves on delivering robust, scalable solutions while fostering a strong engineering culture focused on quality and innovation. last updated 13 week of 2026