Network Engineer - Hedge Fund (B7C6D4D)

Referment; Greater London; On-site; GBP 70,000 - 110,000; Full time

Job summary

Referment is partnering with a leading technology-driven investment firm to hire a Network Engineer to join its global Infrastructure team. The role is based in Central London and involves designing, building, and supporting the network infrastructure that underpins a fast-paced, performance-critical trading environment.

You will work in a lean, collaborative team, tackling complex technical challenges and owning critical infrastructure.

Qualifications

• 5+ years in Network/Infrastructure Engineering.
• Strong TCP/IP, VLANs, VPNs, DNS, DHCP, routing and switching knowledge.
• Scripting/automation with Python, PowerShell or Bash.

Responsibilities

• Design, implement and support the enterprise network infrastructure.
• Manage and optimise switching, routing, firewalls, VPNs, wireless, and core connectivity.
• Monitor, troubleshoot and resolve complex network/infrastructure issues.
• Support and improve network performance, resilience and availability across global environments.
• Collaborate with infrastructure and engineering teams on deployments and upgrades.
• Automate operational tasks using scripting and infrastructure tooling.
• Support Windows and Linux server environments as part of the wider team.
• Contribute to evolution of infrastructure architecture and best practices.

Skills

Network Engineering

Automation Scripting

Windows & Linux servers

Troubleshooting

Enterprise networking

Tools

Cisco networking

Job description

Referment is partnering with a leading technology-driven investment firm to hire a Network Engineer to join its global Infrastructure team.

This is an opportunity to join a highly technical environment where networking sits at the heart of the firm's trading platform and wider technology estate. Working as part of a lean, collaborative team, you'll be responsible for designing, building, and supporting the network infrastructure that underpins a fast-paced, performance-critical business.

The role offers a broad mix of project work and operational engineering, making it ideal for someone who enjoys solving complex technical challenges while taking ownership of critical infrastructure.

What You'll Be Doing

• Design, implement, and support the firm's enterprise network infrastructure.
• Manage and optimise switching, routing, firewalls, VPNs, wireless networking, and core connectivity.
• Monitor, troubleshoot, and resolve complex network and infrastructure issues.
• Support and improve network performance, resilience, and availability across global environments.
• Work closely with infrastructure and engineering teams on new deployments, upgrades, and technology initiatives.
• Automate operational tasks using scripting and infrastructure tooling where appropriate.
• Support Windows and Linux server environments as part of the wider infrastructure team.
• Contribute to the ongoing evolution of the firm's infrastructure architecture and operational best practices.

What We're Looking For

• 5+ years' experience in Network Engineering or Infrastructure Engineering.
• Strong understanding of TCP/IP, VLANs, VPNs, DNS, DHCP, routing, switching, and enterprise networking concepts.
• Hands-on experience with Cisco networking technologies.
• Experience troubleshooting enterprise network infrastructure in a complex environment.
• Scripting or automation experience with Python, PowerShell, Bash, or similar.
• Experience supporting Windows and Linux server environments.
• A proactive, hands-on approach with a genuine interest in building and improving infrastructure.
• Previous experience within financial services, trading, or other high-availability environments would be advantageous but is not essential.

Why join?

• You’ll be joining a business where technology is central to its success and engineers are given the autonomy to make a real impact. Working within a lean, highly skilled infrastructure team, you'll gain exposure to a modern technology estate, work on challenging engineering projects, and help shape the network platform that supports a global investment business.

The role is based full-time from the firm's Central London office and offers highly competitive compensation alongside the opportunity to work with some of the industry's strongest engineering talent.

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