Low-Latency C++ Trading Platform Engineer — London Hybrid

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

Job summary

Dex, via one of its trusted partner companies, seeks an expert C++ engineer to build and scale a high-frequency trading platform. You will own core components for real-time market data ingestion, low-latency order routing, connectivity, and telemetry in a Linux environment.

This is a deep, low-level systems role where hardware, network and memory behaviour matter. You will shape architecture with executive leadership, enjoying hybrid London-based work with direct platform ownership and no

Qualifications

• Mastery of modern C++ with deep knowledge of the standard library implementation.
• Proven track record building high-performance client-server applications on Linux.
• Strong mechanical sympathy for hardware, memory models and networking stacks.
• Sharp analytical problem-solving ability demonstrated in technical assessments.

Responsibilities

• Build and scale high-throughput trading infrastructure for real-time data capture and order execution.
• Profile and optimize for network I/O, memory allocations and data structures.
• Architect robust distributed systems and data pipelines on Linux.
• Collaborate with technical leadership to shape platform architecture and roadmap.

Skills

Modern C++

Linux networking

Low-latency systems

Data structures

CPU architectures

Job description

Dex, via one of its trusted partner companies, seeks an expert C++ engineer to build and scale a high-frequency trading platform. You will own core components for real-time market data ingestion, low-latency order routing, connectivity, and telemetry in a Linux environment.

This is a deep, low-level systems role where hardware, network and memory behaviour matter. You will shape architecture with executive leadership, enjoying hybrid London-based work with direct platform ownership and no