Senior Full-Stack Engineer – Trading Platform (TypeScript / Node.js / React)
Location: Waterloo, London (Hybrid)
Overview
Our client, a large enterprise, is seeking a Senior Full-Stack Engineer to join an established trading platform programme. This production-critical system is long-lived, actively evolving, and places strong emphasis on performance, reliability, and maintainability.
You will join a highly experienced team of senior engineers and QA developers, taking full ownership of features from design through to production, while collaborating directly with the client.
Key Responsibilities
1. Design, build, and maintain features across the full stack of a high-performance trading platform.
2. Work primarily with:TypeScript (Node.js & React)Monorepo tooling, GitHub, GitHub ActionsJest, PlaywrightRedis, MS SQL, WebSocketsDocker, KubernetesObservability tools (Grafana, Prometheus, SonarQube)
3. Take end-to-end ownership of features from design to production.
4. Collaborate closely with platform and DevOps engineers on build pipelines, observability, and operational concerns.
5. Communicate directly with clients to clarify requirements and propose solutions.
6. Contribute to and improve automated testing practices.
7. Participate in peer code reviews and maintain high engineering standards.
8. Leverage LLM/AI-enabled development tools as part of day-to-day development.
Desirable
9. Experience with functional programming (OCaml, Haskell).
10. Prior experience in trading, finance, or real-time systems.
11. Solid understanding of DevOps and operational concerns (logging, metrics, automation).
12. London-based and willing to travel to company/client events.
TypeScript,React.js,Node.js
13. 8+ years of professional software development experience.
14. 3+ years hands-on experience with TypeScript, Node.js, and React.
15. Strong experience building and maintaining production systems.
16. Comfortable working in a senior, autonomous engineering team.
17. Strong communication skills and fluency in English.
18. Hybrid working in Waterloo, London.