C++ Exchange Developer

Leading Etrading client requires a senior C++ Engineer to Design, develop and enhance low-latency C++ applications across five equities trading environments, Contribute to critical components including order handling, matching engines and market data services.

Take ownership from initial design through implementation, testing and deployment.

Are you passionate about building ultra-high-performance systems that operate at the heart of financial markets?

Join a world-class engineering team responsible for one of Europe's largest pan-European equities trading venues, where every microsecond matters and your work directly influences how billions of pounds are traded every day.

As a Senior Software Engineer, you'll play a key role in designing, developing and operating the technology that powers our real-time trading ecosystem. From order entry and matching engines to market data distribution and low-latency infrastructure, you'll help build mission-critical systems that are relied upon by some of the world's most sophisticated trading firms.

Why Join Us?

You'll become part of a highly collaborative engineering team that works closely with business stakeholders across Europe and technology teams globally. We believe in empowering engineers with ownership, encouraging innovation, and giving everyone the opportunity to make a meaningful impact.

This is more than a development role. It's an opportunity to solve complex technical challenges, influence system design, mentor talented engineers, and shape the future of modern electronic trading.

Build High-Performance Trading Systems

Design, develop and enhance low-latency C++ applications across five equities trading environments

Deliver robust, scalable and production-ready solutions with a strong focus on quality and performance

Contribute to critical components including order handling, matching engines and market data services

Own Features End-to-End

Take ownership from initial design through implementation, testing and deployment

Collaborate closely with engineers, product teams and business stakeholders

Drive technical decisions and ensure successful delivery of complex initiatives

Lead and Mentor

Support and develop less experienced engineers

Act as a technical expert for key systems and services

Contribute to technical discussions, architecture reviews and engineering best practices

Support a Mission-Critical Platform

Investigate and resolve complex production issues

Help maintain the reliability and availability of trading systems

Participate in an on-call support rota when required

Shape the Future Team

Interview and evaluate engineering candidates

Help build an exceptional technology organisation

What We're Looking For

Essential Skills & Experience

Significant professional experience with Modern C++ (C++11 or later)

Strong understanding of performance optimisation and low-level system design

Proven track record of delivering features from concept through production

Experience mentoring or supporting fellow engineers

Strong communication and stakeholder management skills

Experience developing and supporting applications within Linux environments

A proactive, ownership-driven mindset

Desirable Experience

C++20

Python development

SQL and relational databases

Real-time or low-latency systems

Trading, financial markets or exchange technology

Computer Science, Software Engineering or related degree

What We Offer

We believe exceptional people deserve exceptional support. That's why we provide a comprehensive package focused on your professional growth, financial wellbeing and personal health.

Financial Rewards

Competitive base salary

Performance-based bonus opportunity

Employee Stock Purchase Plan

Pension contributions of up to 7% of salary with no employee contribution required

Health & Wellbeing

Private medical insurance for you and your family, including dental cover

Company-funded private GP service

Life assurance and long-term illness cover

Employee Assistance Programme for you and your immediate family

Family Support

Enhanced parental and adoption leave

Flexible and supportive working environment

Lifestyle Benefits

ClassPass Corporate Membership

Complimentary lunch, snacks and refreshments in the office

Employee referral bonus scheme

Volunteer opportunities and charitable giving match programme

Learning & Development

Paid tuition assistance

Ongoing professional development opportunities

Exposure to some of the most advanced trading technology in the industry

To find out more about Huxley, please visit

Huxley, a trading division of SThree Partnership LLP is acting as an Employment Business in relation to this vacancy | Registered office | 8 Bishopsgate, London, EC2N 4BQ, United Kingdom | Partnership Number | OC(phone number removed) England and Wales