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
* 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, 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.
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).
* London‑based and willing to travel to company/client events.
Qualifications
* 8+ years of professional software development experience.
* 3+ years hands‑on experience with TypeScript, 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.
* Availability to work in a hybrid setting in Waterloo, London.
Why Is This a Great Opportunity
* 5 days/year dedicated to training.
* 1,000 annual training allowance (up to 50% usable for home workstation equipment).
* Company equipment and onboarding kit.
* In‑person team events every 3 months.
* Annual bonus (company and personal performance dependent).
* Stock option plan.
* Birthday off.
* Generous employee referral programme.
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