Orbis Group
C++ Software Engineer
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C++ Software Engineer | Low Latency & Networking
Fully remote | £80,000–£120,000 + performance bonus | Permanent
We’re partnering with a specialist technology business building performance-critical systems across data, analytics and market execution.
They’re looking for a C++ engineer with a strong understanding of Linux and networking to build systems that stay fast and reliable under unpredictable network conditions.
This role will suit someone who enjoys getting beneath the application layer: understanding TCP behaviour, investigating latency and building robust connection handling when networks become unreliable.
What you’ll be working on
- Designing and developing high-performance, low-latency systems in modern C++.
- Managing TCP connections, including timeouts, retries, reconnection and recovery.
- Measuring and reducing the impact of jitter, packet loss and variable latency.
- Profiling and tuning Linux systems to improve performance and consistency.
- Investigating bottlenecks across application code, the operating system and network.
- Building tooling and instrumentation to understand how systems behave in production.
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What we’re looking for
- Strong commercial C++ experience in performance-critical or latency-sensitive systems.
- A deep understanding of TCP and network behaviour beyond using networking libraries.
- Hands-on Linux experience, including system and networking performance tuning.
- Experience handling connection failures, packet loss and unpredictable network conditions.
- A methodical approach to debugging and optimisation, using measurement and profiling to guide decisions.
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Your background could be in trading technology, market connectivity, telecommunications or another environment where network performance and reliability are central to the systems you build.
What’s on offer
- Fully remote working.
- £80,000–£120,000 base salary, depending on experience.
- Performance bonus.
- 25 days’ holiday plus bank holidays.
- Private health insurance.
- The opportunity to take ownership of technically challenging work across C++, Linux and networking.
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