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Senior Trading Platform Engineer (Full Stack) at Applied Blockchain. We're looking for a Senior Trading Platform Engineer (Full Stack) to join an established trading platform development programme for a large enterprise client. The platform has been live in production for over 7 years, with most of the core team having worked on it for close to 5 years on average — a reflection of the stability, quality, and long-term nature of this engagement.. The system is production-critical and actively evolving, with a strong focus on performance, reliability, and maintainability. While Applied Blockchain is well known for distributed ledger and cryptography work, this role is focused on a non-blockchain trading system built using modern TypeScript-based technologies. The role is full stack in nature, though with a slightly stronger emphasis on the frontend (React/TypeScript).. You'll be joining a highly experienced team of senior engineers and QA developers, where autonomy, technical ownership, and thoughtful decision-making are expected.. What you’ll be doing. Designing, building, and maintaining features across the full stack of an internal trading platform. Working primarily with:. TypeScript (Node.js & React). Monorepo tooling, GitHub, GitHub Actions. Jest, Playwright. Redis, MS SQL, WebSockets. Docker, Kubernetes. Observability tooling (Grafana, Prometheus, SonarQube). Taking end-to-end ownership of features from design through to production. Collaborating closely with platform / DevOps engineers on build pipelines, observability, and operational concerns. Communicating directly with the client to clarify requirements and propose solutions. Contributing to and improving automated testing practices. Participating in peer code reviews and helping maintain high engineering standards across the team. Using. LLM/AI enabled development tools and techniques . (with access to the latest OpenAI/Anthropic/etc. models) as part of day-to-day development. 8+ years of professional software development experience. 3+ years of hands-on experience with TypeScript, including Node.js and React. Strong experience building and maintaining production systems. Comfortable working in a senior, autonomous engineering team. Strong communication skills and fluency in English. Hybrid work arrangement (Waterloo, London). Nice to have. Experience with functional programming concepts or languages (e.g. OCaml, Haskell). Prior experience in trading, finance, or other real-time systems. Solid understanding of DevOps and operational concerns (logging, metrics, automation). London-based. Willingness to travel to company/client events. Company Location: United Kingdom.