Systems: Senior Linux Infrastructure Engineer (London) (6501B3C)

Referment; Greater London; On-site; GBP 90,000 - 130,000; Full time

Job summary

Referment is seeking a Senior Linux Infrastructure Engineer to join its Platform Engineering team. This hands-on role covers Linux, networks, security controls, and core services across data centres, cloud, and international offices.

You will design, integrate, and maintain OS and infrastructure services, contribute to global networks, improve security on a large-scale production platform, and diagnose complex host and network issues while collaborating with a worldwide team.

Qualifications

• At least ten years of infrastructure engineering experience with development work in Python.
• Deep knowledge of Linux operating systems and configuration-management tooling.
• Strong host- and network-level troubleshooting skills.
• Familiarity with automated builds, software deployment and CI/CD systems.
• Clear communication and collaboration across disciplines and locations.

Responsibilities

• Design, integrate and maintain Linux-based OS and infrastructure services.
• Contribute to global networks, core services, and security across on-premises and cloud.
• Improve the security framework of a large-scale production platform.
• Diagnose complex host and network issues using tracing and diagnostics.
• Collaborate with colleagues across a global engineering team and partner functions.

Skills

Linux expertise

Troubleshooting

Communication

Tools

Python

CI/CD

Configuration management tooling

Job description

Referment is working with a global investment and technology organisation to hire a Senior Linux Infrastructure Engineer for its Platform Engineering team. This is a hands‑on role in a global, cross‑platform group responsible for core infrastructure supporting technology development and investment activity.

You’ll work across Linux platforms, networks, security controls and core services in data centres, cloud environments and international offices. The role combines deep troubleshooting with the design and integration of reliable infrastructure.

The Role

• Design, integrate and maintain operating-system and infrastructure services, with a particular focus on Linux.
• Contribute to global networks, core network services and security infrastructure across on‑premises and cloud environments.
• Improve the security framework of a large-scale, fast‑moving production platform.
• Diagnose complex host and network issues using tracing and other diagnostic tools.
• Work with colleagues across a global engineering team and partner departments.

What We're Looking For

• At least ten years of comparable infrastructure engineering experience, including development work in Python.
• Deep knowledge of Linux operating systems and configuration‑management tooling.
• Strong host- and network-level troubleshooting skills.
• Familiarity with automated builds, software deployment and CI/CD systems.
• Clear communication and the ability to collaborate across disciplines and locations.

Desirable Experience

• Rust, Java, C, Go or C#.
• DNS, DHCP, Kerberos, network protocols, information security, databases, large-scale storage or Windows/Linux interoperability.

This could suit a senior Linux, platform or infrastructure engineer who combines production depth with strong software‑development instincts.