Senior Software Developer

Company: Trayport
Apply for the Senior Software Developer
Location: London
Job Description:

Overview

In this role you will enhance reliability and scalability for Joule Direct, a high-volume energy trading platform. You will collaborate with cross-functional teams to drive systemic improvements and address complex reliability challenges. You’ll work on connecting to exchanges, building customer-facing features, and improving observability in hot paths, while mentoring peers and shaping future features. This is a hands-on, impact-focused opportunity in a fast-paced, collaborative environment with a strong emphasis on learning and innovation.

Pay / Benefits

  • tech talks and training
  • Hackathons
  • career development
  • accommodations for applicants and employees
  • strong market presence
  • opportunities to learn robotics/AI initiatives (implied)

Responsibilities

  • Improve how we connect to an Exchange or Broker (e.g., CME, ICE, EEX)
  • Implement customer facing features via SDKs and APIs
  • Improve observability in hot paths
  • Implement a new Automated Trading feature
  • Benchmarking code to reduce latency and improve throughput
  • Mentoring and coaching junior engineers
  • Design, plan and execute complex features and raise RFCs

Key requirements

  • Knowledge or experience with financial markets valued
  • Excellent communication skills
  • Strong knowledge of C#, Rust or any popular programming language
  • Can write efficient, concurrent code
  • Knowledge of how distributed systems work
  • Knowledge of version control systems
  • Cross-functional collaboration
  • Pragmatism in trade-offs for speed
  • Self-improvement mindset and openness to feedback
  • C#
  • Rust
  • Concurrent programming

…

Posted: October 10th, 2026