Low-Latency C++ Trading Platform Engineer - London On-site

Westren Capital; Greater London; Hybrid; GBP 160,000 - 200,000; Full time

Job summary

Westren Capital, a London-based proprietary trading firm, seeks a C++ Trading Platform Developer to build and maintain core platform components. You will work on order management, market data handling, and position tracking in a high-velocity trading environment.

Join a collaboration-driven team where researchers, engineers, and traders align to extract durable signals from data and translate them into scalable, risk-aware strategies.

Qualifications

• Strong C++ skills applicable to high-throughput systems.
• Experience building low-latency trading components.
• Willingness to debug and optimize production systems.

Responsibilities

• Build and maintain core components of the trading platform, including order management, market data handling, and position tracking.
• Write high-performance, low-latency C++ code that sits in the path between a decision and an executed trade.
• Collaborate with traders and quants to translate requirements into working systems.
• Debug and resolve production issues on live trading systems with immediate impact.
• Improve platform reliability, observability, and performance over time.
• Contribute to architectural decisions as the platform scales across venues and strategies.

Skills

C++ proficiency

Low-latency design

Performance optimization

Linux systems programming

Concurrency

Python scripting

Job description

Westren Capital, a London-based proprietary trading firm, seeks a C++ Trading Platform Developer to build and maintain core platform components. You will work on order management, market data handling, and position tracking in a high-velocity trading environment.

Join a collaboration-driven team where researchers, engineers, and traders align to extract durable signals from data and translate them into scalable, risk-aware strategies.