Infrastructure Specialist - Selby Jennings

Infrastructure Specialist

Our client is a prestigious hedge fund seeking an Infrastructure Specialist to join their ambitious trading environment. They operates at the sharp end of global markets, combining advanced technology with systematic and discretionary trading strategies. The firm has built a reputation for strong performance and a highly technical, engineering-led culture, where infrastructure is treated as a critical driver of trading success rather than a back-office function.

They are continuing to invest heavily in their core platform, with a focus on scalability, automation, and performance across their trading and research environments. This is an opportunity to join a lean, high-impact team where engineers have real ownership, direct interaction with the business, and the ability to shape infrastructure in a fast-moving, low-latency environment.

Key Responsibilities

• Build, scale, and support Linux-based infrastructure across trading and research environments
• Automate manual processes using Python / PowerShell / scripting tools
• Work across AWS (or similar cloud) to design and manage scalable, reliable systems
• Maintain and improve monitoring, performance, and system reliability
• Partner closely with traders, quants, and developers to troubleshoot production issues
• Contribute to CI/CD pipelines, infrastructure-as-code, and platform engineering initiatives
• Drive improvements in system performance, resilience, and operational efficiency

Key Skills

• Strong Linux fundamentals (system admin, performance, troubleshooting)
• Scripting / automation experience (Python, Bash, PowerShell)
• Cloud exposure - ideally AWS (compute, networking, storage services)
• Experience with infrastructure-as-code (Terraform, CloudFormation or similar)
• Solid understanding of networking (TCP/IP, DNS, latency-sensitive systems)
• Experience supporting production environments (ideally high-availability / low-latency)