C++ HFT Systems Engineer — Ultra-Low Latency

Margoconsulting; Greater London; On-site; GBP 90,000 - 140,000; Full time

Benefits offered by this job

Elite HFT environments

Technical ownership of deployments

Long-term engineering challenges

Job summary

MARGO is a technology-focused consultancy delivering elite software engineering to demanding financial markets in the UK. The role centers on building latency-critical trading infrastructure, with emphasis on speed, determinism, and control of execution paths.

Interaction with C# components may occur outside the critical path. Join a team operating in ultra-low latency environments connected to exchanges, and contribute to production systems, toolchains and performance analysis in modern

Qualifications

• Strong experience in C++ for performance-critical or low-latency systems.
• Proven background in HFT or ultra-low latency trading environments.
• Deep understanding of CPU architecture, caches and memory models.
• Strong knowledge of concurrency, memory ordering and Linux internals.
• Experience working close to hardware and network layers.
• Strong production mindset and sense of ownership.

Responsibilities

• Design, develop and optimise ultra-low latency C++ trading components.
• Work on critical execution paths for market data processing and order routing.
• Implement lock-free and wait-free algorithms.
• Optimise memory allocation, cache locality and CPU utilisation.
• Reduce jitter and tail latency.

Skills

C++ development

HFT / low-latency

Linux internals

Concurrency & memory models

Networking / kernel bypass

Performance profiling

Tools

DPDK

Solarflare Onload

Zero-copy techniques

Lock-free programming

Job description

MARGO is a technology-focused consultancy delivering elite software engineering to demanding financial markets in the UK. The role centers on building latency-critical trading infrastructure, with emphasis on speed, determinism, and control of execution paths.

Interaction with C# components may occur outside the critical path. Join a team operating in ultra-low latency environments connected to exchanges, and contribute to production systems, toolchains and performance analysis in modern