Trading Systems Engineer

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

Job summary

Westren Capital, a London-based proprietary trading firm, seeks a Trading Systems Engineer to own exchange connectivity, trade capture, and the tools that keep traders and engineers informed about system health in real time. You’ll work across Python, C++, and other languages to ensure reliability across many venues.

The role emphasizes debugging live production issues under pressure, deep Linux/networking knowledge, and close collaboration with traders and platform engineers to align systems

Qualifications

• Solid programming experience in Python and/or C++, with the ability to work across a mixed-language trading systems stack.
• Experience with exchange connectivity, trade capture, or order management systems is a strong advantage.
• Comfortable debugging live production issues methodically, under pressure, without guessing.
• Strong understanding of Linux systems and networking fundamentals.

Responsibilities

• Build and maintain exchange connectivity and trade capture systems across a growing number of digital asset venues.
• Design and support monitoring and alerting tools that give traders and engineers real-time visibility into system health and trading activity.
• Investigate and resolve production issues across the trading systems stack, often under time pressure when a venue or connection misbehaves.
• Work across a multi-language stack (Python, C++, and others) depending on what a given system actually needs.
• Collaborate closely with traders, quants, and platform engineers to understand how systems are actually used, not just how they were spec'd.

Skills

Python

C++

Trading systems

Debugging under pressure

Tools

Linux

Networking fundamentals

Exchange connectivity

Trade capture systems

Job description

# Trading Systems EngineerAnnual base salary: £160,000 – £200,000 GBP## Role overviewWestren Capital is a London-based proprietary trading firm specialising in digital asset markets. This role sits within our Trading Technology team, building and supporting the systems that connect our trading strategies to venues, exchanges, and liquidity sources across digital asset markets.Where our platform and pricing teams focus on the core trading engine, this role owns the layer around it: exchange connectivity, trade capture, monitoring, and the tools that let traders and engineers see what the system is actually doing at any given moment.## Responsibilities* —Build and maintain exchange connectivity and trade capture systems across a growing number of digital asset venues* —Design and support monitoring and alerting tools that give traders and engineers real-time visibility into system health and trading activity* —Investigate and resolve production issues across the trading systems stack, often under time pressure when a venue or connection misbehaves* —Work across a multi-language stack (Python, C++, and others) depending on what a given system actually needs* —Collaborate closely with traders, quants, and platform engineers to understand how systems are actually used, not just how they were spec'd* —Improve reliability and observability of trading systems on an ongoing basis, not just when something breaks## Requirements* —Solid programming experience in Python and/or C++, with the ability to work across a mixed-language trading systems stack* —Experience with exchange connectivity, trade capture, or order management systems is a strong advantage* —Comfortable debugging live production issues methodically, under pressure, without guessing* —Strong understanding of Linux systems and networking fundamentals* —Prior exposure to crypto or other 24/7 markets is a plus given the operational demands of always-on trading* —Clear communicator, able to work directly with traders and engineers who need fast, accurate answers