System Performance Engineer

Systems Performance Engineer - Dublin

We are seeking a highly skilled Systems Performance Engineer to join a fast-paced, technology-driven trading environment. This role is focused on building, testing, and optimizing ultra-low latency trading infrastructure that supports some of the most demanding applications in the financial markets.

About the Role

As a Performance Engineer, you’ll work with cutting-edge technologies to design and evaluate trading systems under real-world conditions. You’ll recreate complex trading scenarios in a dedicated lab environment, analyze performance data, and drive improvements in speed, capacity, and reliability. The position requires both hands-on technical expertise and the ability to collaborate with engineers, researchers, and external partners to keep our trading platforms at the forefront of performance.

Key Responsibilities

• Recreate and test complex low latency trading topologies in a controlled lab environment.
• Partner with engineering and trading teams to define and execute testing scenarios.
• Develop tools and automation for performance testing and monitoring.
• Analyze network and systems performance data to identify bottlenecks and optimization opportunities.
• Collaborate with vendors and technology partners on next-generation low latency solutions.
• Drive improvements in stability, efficiency, and overall system performance.
• Become an internal subject matter expert on low latency trading environments.

What We’re Looking For

• Strong programming skills in C/C++ and C#.
• Experience with Python (data analysis, Jupyter notebooks) and scripting (Python/PowerShell).
• Excellent troubleshooting, testing, and analytical skills.
• Solid understanding of operating systems, computer internals, and networking protocols.
• Curious, detail-oriented, and motivated to solve complex performance challenges.

Nice to Have

• Prior experience in low latency or high-performance systems (finance or similar domains).
• Knowledge of network protocols (TCP/UDP, BGP, IGMP, Ethernet, multicast).
• Exposure to FPGA technologies and advanced networking hardware (Solarflare, kernel bypass).

Why Apply?

• Work with the latest technologies in high-performance computing and trading.
• Opportunity to directly impact system performance in live trading environments.
• A collaborative, flat-structured environment that values innovation and continuous learning.
• Competitive package and career growth in a global, tech-first organization.