Senior C++ Engineer - Low-Latency Trading (Onsite 3x/Week)

Advantage Resourcing UK Ltd; Greater London; On-site; GBP 70,000 - 110,000; Full time

Job summary

Advantage Resourcing UK Ltd is seeking a Senior C++ Engineer for a London-based trading platform. The role is a 6-month contract and requires onsite presence 3 days a week.

You will work on low-latency connectivity, high-performance algorithms, and reliability across global markets. The ideal candidate has extensive C++ experience in financial services, with knowledge of trading life cycles and distributed systems.

Qualifications

• Senior C++ software engineer in financial services with trading domain experience.
• Knowledge of exchange-traded derivatives and trading life cycle.
• Experience with low-latency connectivity and high-performance algorithms.
• Proficient in multithreaded, asynchronous, distributed systems.

Responsibilities

• Develop low-latency exchange connectivity using FIX, WebSockets, and HTTP.
• Build and enhance high-performance trading algorithms with traders.
• Optimize performance with kernel bypass, TLS, and connection tuning.
• Investigate production issues, improve reliability, fix bottlenecks.
• Maintain and extend automated testing frameworks.
• Support releases, deployments, and continuous improvement.

Skills

C++

Financial services exp

Multithreaded programming

Algorithms & data structures

Python

Communication skills

Tools

FIX protocol

WebSockets

HTTP

TLS optimization

Job description

Advantage Resourcing UK Ltd is seeking a Senior C++ Engineer for a London-based trading platform. The role is a 6-month contract and requires onsite presence 3 days a week.

You will work on low-latency connectivity, high-performance algorithms, and reliability across global markets. The ideal candidate has extensive C++ experience in financial services, with knowledge of trading life cycles and distributed systems.