Senior C++ Low Latency Engineer

Senior C++ Low Latency Engineer (Real Time Trading Systems) Inside IR35 | £800/day | Canary Wharf (Onsite) | 6-month initial (strong extension potential) We''re building a Real Time trade monitoring and market data system operating across a distributed Linux environment, where latency, determinism, and throughput are critical. This is a hands-on C++ engineering role focused on building and optimising the low-level systems that move and process trading data in Real Time. Key Skills Strong modern C++ (11/14/17) in production systems Deep experience in low/ultra-low latency environments Strong Linux systems programming background Multithreading, concurrency, memory/performance optimisation Network-level understanding (TCP/IP, sockets, latency tuning) Highly Desirable Market data/trading/exchange systems experience FIX protocol, matching engines, or trade messaging eBPF/Kernel tracing/performance tooling (bcc, bpftrace, kprobes) High-performance distributed systems (non-observability focused) Overview You will be working on systems that sit close to the data path, ensuring trade events can be captured, processed, and correlated in Real Time across distributed infrastructure. This is not a dashboard or platform observability role - it is systems-level engineering on live trading data flows. ..... full job details .....