Production-Grade C++ Low-Latency Performance Engineer

Portofino; Greater London; Hybrid; GBP 120,000 - 180,000; Full time

Benefits offered by this job

Direct impact

Ownership

Lean team

High leverage

Job summary

Portofino Technologies is seeking experienced C++ engineers to join our Market Making tech team. You will design and optimise low-latency trading systems with direct impact on performance, reliability, and scale.

You will own critical components across the trading stack, from exchange connectivity to core infrastructure, solving real-time challenges and delivering production-grade systems with measurable impact.

Qualifications

• Proven experience delivering high-performance, low-latency C++ solutions.
• Strong knowledge of data structures, algorithms and system design.
• Excellent debugging, profiling and troubleshooting skills.
• Experience with networking and hardware-level behavior.
• Ability to own features from design to production.
• Familiarity with exchange connectivity or real-time data systems is a plus.

Responsibilities

• Develop and optimise performance-critical components across the trading system.
• Work on exchange connectivity, core infrastructure, and system architecture.
• Analyse system performance and identify bottlenecks across CPU, memory, and networking.
• Improve latency, throughput, and reliability of trading systems.
• Design and build new applications and system components from scratch.
• Collaborate closely with traders and engineers to deliver robust, production-ready solutions.

Skills

Modern C++ (C++20+)

Low-latency systems

Data structures & algorithms

Debugging & profiling

Performance optimisation

Networking & hardware-level behaviour

Thread pinning / CPU isolation

Production ownership

Job description

Portofino Technologies is seeking experienced C++ engineers to join our Market Making tech team. You will design and optimise low-latency trading systems with direct impact on performance, reliability, and scale.

You will own critical components across the trading stack, from exchange connectivity to core infrastructure, solving real-time challenges and delivering production-grade systems with measurable impact.