Full-stack Typescript Developer

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.
• Hybrid working 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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