Senior Software Engineer

Radley James; London; Hybrid; GBP 50,000 - 80,000; Full time

Job summary

A leading algorithmic trading firm in London is seeking a C++ Trading Platform Developer. The role involves building a global trading platform with real-time data capture and optimizing code for performance. Candidates should have strong C++ skills and an interest in algorithmic trading, with opportunities for mentorship in a vibrant work culture.

Benefits

Flexible hybrid working

Relocation and visa support

Vibrant culture and social events

Health and pension benefits

Qualifications

• Strong C++ skills (will be tested).
• Curiosity about system internals (standard libraries, memory, networking).
• Analytical mindset; understanding of CPU/memory models or assembly is a plus.

Responsibilities

• Build and scale a global trading platform with real-time data capture and exchange connectivity.
• Design and maintain high-performance, clean C++/Python code on Linux systems.
• Collaborate with experienced developers to improve infrastructure and system performance.

Skills

C++

Analytical mindset

Curiosity about system internals

Job description

This range is provided by Radley James. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.

Base pay range

Direct message the job poster from Radley James

Connecting Exceptional Talent with Leading Firms in Technology and Quantitative Trading | Specialist in Building High-Impact Teams for Global Growth

About the Company

Our client is a leading algorithmic trading firm in the digital asset space. They provide automated liquidity across global crypto exchanges, OTC services, and support major blockchain initiatives. They also operate a venture arm focused on early-stage DeFi investments.

Founded in 2017 by industry veterans, the firm combines the technical excellence of traditional high-frequency trading with the innovation of a tech startup. They take a long-term, leadership-driven approach to building a compliant and future-ready crypto market.

The Role

We’re seeking a C++ Trading Platform Developer with a strong grasp of low-level systems, high-performance coding, and scalable architecture. You should enjoy digging into how things work, with experience in data structures, networked applications, and optimizing code for speed. An interest in algorithmic trading is a plus.

You’ll have real impact from day one, working on a global, real-time trading platform built with C++ and Python. The environment is fast-moving and non-hierarchical — no legacy systems, minimal bureaucracy, and direct mentorship from senior engineers and traders, including the CTO.

Key Responsibilities

• Build and scale a global trading platform with real-time data capture and exchange connectivity.
• Design and maintain high-performance, clean C++/Python code on Linux systems.
• Collaborate with experienced developers to improve infrastructure and system performance.

What You’ll Need

• Strong C++ skills (will be tested).
• Curiosity about system internals (standard libraries, memory, networking).
• Analytical mindset; understanding of CPU/memory models or assembly is a plus.
• Work at a cutting-edge trading firm with high ownership and impact.
• Flexible hybrid working; relocation and visa support available.
• Vibrant culture, social events, and a well-equipped central London office.
• Competitive, performance-based compensation with health and pension benefits.

Seniority level

• Seniority level

  Mid-Senior level

Employment type

• Employment type

  Full-time

Job function

• Job function

  Finance and Engineering

• Industries

  Capital Markets, Financial Services, and Software Development

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