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. Does this sound like your next career move? Apply today. Working with Certain Advantage We go the extra mile to find the best people for the job. If you're looking for a role where you can make an impact and develop your career, we'll work with you to find it. We work with businesses across the UK to find the best people in Finance, Marketing, IT and Engineering. If this job isn't for you, head to Certain Advantage to register for job alerts and career guidance