C++ Engineer (Ultra-Low-Latency Systems)

TL;DR

C++ Engineer (Ultra-Low-Latency Systems): Building and optimizing high-performance trading platforms that operate at microsecond scale with an accent on CPU, cache, and memory level performance tuning. Focus on designing ultra-fast infrastructure, engineering high-performance data structures, and resolving complex bottlenecks in real-time trading environments.

Location: London (Hybrid)

Salary: Up to £190,000

A leading buy-side firm specializing in ultra-low-latency trading platforms.

What you will do

• Design and optimize ultra-fast, low-latency trading infrastructure.
• Fine-tune performance at the CPU, cache, and memory levels.
• Engineer high-performance data structures and algorithms for real-time trading.
• Diagnose and resolve complex bottlenecks across the software and hardware stack.
• Drive innovation through advanced systems-level research and hardware optimization.

Requirements

• Expert proficiency in modern C++ (C++11/14/17/20) with a performance-first mindset.
• Deep understanding of CPU internals, memory hierarchy, and cache coherency.
• Hands-on experience with multi-threading, lock-free programming, and scalable system design.
• Professional experience of 1+ year, with a strong plus for low-latency, real-time, or trading systems background.

Culture & Benefits

• Opportunity to see code directly drive global trading performance in real-time.
• Work on advanced optimization projects and next-generation architecture.
• Collaborate with world-class engineers in a tight-knit, high-performance team.
• Flat structure offering real ownership of projects and rapid professional progression.