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Client Server

C++ Developer / Technical Lead - Fintech

Hybrid

London, United kingdom

Senior

Freelance

03-02-2026

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Skills

Communication Leadership C# Networking Training Windows AWS Software Development Team Leadership Agile C++ TCP/IP

Job Specifications

C++ Developer / Technical Lead (Windows C / C++, C#) London to £115k FTC

Are you a skilled C++ Developer with technical / team leadership skills looking for a new opportunity? You could be progressing your career in a senior, hands-on role at a global market data provider.

As a C++ Developer / Technical Lead you will head-up an Agile team (5 engineers) focussed on building and maintaining Exchange Connectivity software systems that require real-time and low latency, maintaining data feeds and developing key underlying transport protocols for data transmission.

The platform has been built with C++ and C# deploying to AWS and requires high scalability and low latency - they currently handle 40 billion messages per day.

You'll remain hands-on with approximately a 50/50 split between development and technical / team leadership; you'll coach and mentor the team, developing others and providing project leadership.

Location / WFH:

You'll join colleagues in the City office three days a week with flexibility to work from home the other two days.

Please note this is a 12 month Fixed Term Contract.

About you:

You have C / C++ development skills on Windows OS, C# skills would also be of benefit
You have full software development lifecycle experience
You have a good knowledge of networking protocols e.g. TCP/IP, multicast
You have a strong grounding in Computer Science fundamentals e.g. multi-threading, OOP, Data Structures, Design Patterns
You're collaborative with great communication skills, happy to mentor and develop others

What's in it for you:

*Please note this is a 12 month Fixed Term Contract, with full benefits*

As a C++ Developer / Technical Lead you'll receive a competitive package:

Salary to £115k + bonus
25 days holiday
Pension
Life Assurance and Income protection
Private Medical and Dental care
Gym subsidy and wellness apps
Cycle to work scheme
Ability to buy stock options
Family leave and sabbaticals
Continuous training and career development including personalised budget

Apply now to find out more about this C++ Developer / Technical Lead (Windows C / C++, C#) opportunity.

About the Company

At Client Server, we are driven by technology and powered by people. We are a leading technology recruitment consultancy, specialising in a vast range of technology roles in London, the UK, Europe, and the USA. Our focus is finding exceptional candidates for exceptional organisations. These include technology leaders, innovative start-ups, hedge funds, banks and consultancies. Know more