Contract C++ Developer - eFX Platform

Location: London (Hybrid - 2-3 days onsite per week)
Contract Length: 12 Months
IR35 Status: Inside IR35
Start Date: ASAP

Company Overview

A leading London-based investment bank is seeking a highly skilled C++ Developer to join its eFX technology team. This team is responsible for building and maintaining a high-performance, low-latency, and highly distributed trading platform that supports electronic FX trading globally.

Role Overview

This is a hands-on development role focused on designing and implementing scalable, multithreaded C++ applications for the bank's eFX trading infrastructure. You will work closely with traders, quants, and other technologists to deliver robust, high-throughput solutions.

Key Responsibilities

• Design, develop, and optimise high-performance C++ applications for electronic FX trading.
• Build and maintain multithreaded, distributed systems capable of handling large volumes of market data and order flow.
• Collaborate with cross-functional teams to deliver scalable and supportable solutions.
• Conduct performance tuning, debugging, and troubleshooting in production environments.
• Participate in code reviews, testing, and continuous integration processes.

Required Skills & Experience

• Expert-level proficiency in modern C++ (C++17 or later).
• Strong experience with multithreading, concurrency, and low-latency programming.
• Proven track record in developing high-throughput distributed systems.
• Deep understanding of Linux development using gcc, gdb, git, and associated debugging tools.
• Solid knowledge of the Standard Template Library (STL).
• Experience with Boost libraries is highly desirable.
• Familiarity with system, network, or low-latency programming.
• Working knowledge of messaging and communication protocols including TCP, UDP, multicast, and data encoding.
• Understanding of SQL and basic DDL operations.
• Knowledge of all aspects of software design, development, and deployment.
• Experience designing scalable, high-availability, supportable distributed architectures.
• Working knowledge of FX products, pricing, and real-time risk management is desirable.
• Excellent oral and written communication skills, with the ability to interact effectively with business stakeholders.