Senior C++ Engineer – Trading

Advantage Resourcing UK Ltd; City Of London; On-site; GBP 90,000 - 120,000; Full time

Job summary

Advantage Resourcing UK Ltd is seeking a Senior C++ Engineer – Trading in London. The role is a 6-month onsite contract, requiring presence 3 days a week to develop low-latency exchange connectivity and high-performance trading platforms.

You will build and optimise trading algorithms, fix infrastructure, and work with traders and quants to ensure reliability and scalability across global markets.

Qualifications

• C++ development in financial services.
• Experience in Trading & Capital Markets or Investment Banking.
• Knowledge of derivatives trading lifecycle.
• Strong multithreading and asynchronous coding.

Responsibilities

• Developing low-latency exchange connectivity using FIX, WebSockets and HTTP.
• Building high-performance trading algorithms with traders and quants.
• Optimising performance with kernel bypass, TLS optimisation and connection tuning.
• Investigating production issues, improving reliability and resolving bottlenecks.
• Maintaining automated testing frameworks to ensure software quality.
• Supporting releases, deployments and continuous improvements across the platform.

Skills

C++

Financial services

Trading

Multithreading

Asynchronous

Algorithms

Python

C#

SQL

Deployment best practices

Tools

FIX

WebSockets

HTTP

Job description

Senior C++ Engineer – Trading

Certain Advantage is hiring for a Senior C++ Software Engineer based in London.

This role is on an initial 6-month contract basis and is required to be onsite 3 days a week.

The Company

We're working with a globally recognised organisation at the forefront of energy trading and technology. Backed by significant investment and operating at a global scale, the business develops cutting-edge trading platforms that support high-performance derivatives trading across international markets.

You’ll be responsible for:

• Developing low-latency exchange connectivity using native exchange APIs and protocols including FIX, WebSockets and HTTP.


• Building and enhancing high-performance trading algorithms alongside traders and quantitative analysts.


• Optimising application performance through techniques such as kernel bypass, TLS optimisation and connection tuning.


• Investigating production issues, improving system reliability and resolving performance bottlenecks.


• Maintaining and extending automated testing frameworks to ensure software quality.


• Supporting releases, deployments and continuous improvements across the global trading platform.

The Individual

• C++ software development experience within financial services.


• Experience working in Trading & Capital Markets or Investment Banking


• Strong understanding of exchange-traded derivatives and the full trading lifecycle.


• Knowledge of major global futures exchanges and their native protocols.


• Excellent understanding of multithreaded, asynchronous and distributed software development.


• Strong knowledge of algorithms, data structures and performance optimisation.


• Experience with Python, C#, SQL or other scripting/programming languages.


• A track record of delivering reliable, production-grade applications and deployment best practices.


• Strong analytical, problem-solving and communication skills.


• The ability to thrive in a fast-paced trading environment with changing priorities.