Front Office SRE

Selby Jennings; Greater London; On-site; GBP 110,000 - 150,000; Full time

Job summary

Selby Jennings seeks a Front Office SRE / Production Support Engineer to join a newly formed team in our London office. You will support mission-critical, low-latency trading systems, working closely with traders and engineering to maintain reliability and performance.

You will bring UNIX/Linux expertise, strong command-line skills, and solid networking knowledge to troubleshoot complex trading infrastructure and drive automation in a fast-paced front-office environment.

Qualifications

• Understandings of supporting low-latency trading systems and workflows.
• Real-time production support experience with root-cause analysis in distributed systems.
• Excellent collaboration, communication, multitasking, and problem-solving skills.
• Preferred exposure to trading systems and intermediate Python development.

Responsibilities

• Ensure real-time trading systems remain stable and performant, monitoring and resolving issues.
• Lead live troubleshooting as first line of defence for production incidents in a distributed, low-latency environment.
• Collaborate with traders, engineering and infrastructure teams to plan upgrades with minimal disruption.
• Develop tooling and automation using Python, Bash, and SQL to streamline operations.
• Continuously tune OS, networking, and performance to support high-frequency trading demands.

Skills

Unix/Linux

Command-line

Networking concepts

Python

Bash

SQL

Job description

Our client, a world-leading hedge fund, is seeking a Front Office SRE / Production Support Engineer to join a newly formed team in their London office. This is a high-impact role supporting mission-critical, low-latency trading systems, working directly alongside traders and engineering teams. You will play a key role in maintaining system reliability and performance, while also developing tooling and driving automation to enhance production support capabilities in a fast-paced, front-office environment.

The ideal candidate will come from a top-tier financial institution with strong exposure to front-office trading environments and a deep understanding of highly distributed, latency-sensitive systems. A clear communicator with a strong commercial mindset, you will be comfortable interacting with traders and stakeholders. You will also bring expert-level knowledge of UNIX/Linux systems, strong command-line proficiency, and a solid grasp of networking concepts within applications, enabling you to troubleshoot and optimise complex trading infrastructure effectively.

Responsibilities:

• Ensure real-time trading systems remain stable and performant, proactively monitoring, diagnosing, and resolving issues that could impact trading or market connectivity.
• Act as the first line of defence for production incidents, leading live troubleshooting, performing root-cause analysis, and preventing recurrence in a highly distributed, low-latency environment.
• Partner closely with trading, engineering, and infrastructure teams to plan capacity, execute upgrades, and safely migrate applications with zero or minimal disruption.
• Improve system reliability and efficiency through automation, leveraging Python, Bash, and SQL to streamline operational workflows and reduce manual intervention.
• Continuously tune and optimize systems and networks, applying deep OS, networking, and performance knowledge to support the demands of a high-frequency trading environment.

Requirements:

• Understandings of supporting around low latency trading systems and trading workflows
• Experience with real-time production support, root-cause analysis, and distributed systems for senior candidates
• Excellent collaboration, communication, multitasking, and problem-solving skills
• Preferred exposure to trading systems, intermediate Python development, and OS performance tuning