Senior Linux System Administrator

JR United Kingdom; Southampton; Remote; GBP 55,000 - 75,000; Full time

Job summary

A leading tech company is seeking a Senior Linux Wizard to oversee exciting new projects within a skilled team working on large-scale embedded server platforms. This role involves hands-on work with Ubuntu-based systems, network troubleshooting, and database management, ensuring reliable and scalable infrastructure. Join a remote-first environment that values ongoing collaboration and autonomy.

Benefits

Remote-first working environment

Modern hiring process

Team that values trust and autonomy

Qualifications

• Deep experience running Linux systems in production, especially Ubuntu.
• Strong understanding of networking concepts, including VPNs.
• Confidence in managing relational and distributed databases.

Responsibilities

• Maintain and optimise Ubuntu-based Linux systems in a private cloud environment.
• Monitor and improve performance across systems and services.
• Manage production databases with a focus on reliability.

Skills

Linux systems

Networking concepts

PostgreSQL

Cassandra

Redis

Kafka

Job description

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Client:

G.Digital

Location:

southampton, United Kingdom

Job Category:

Other

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EU work permit required:

Yes

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Job Views:

6

Posted:

06.06.2025

Expiry Date:

21.07.2025

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Job Description:

G.Digital are back with one of our favourite partners in the Tech for good space who are in need of a Senior Linux Wizard to oversee a new exciting project.

You’ll be joining a small, highly skilled team working on a large-scale, embedded server platform — built on Ubuntu, running on real hardware, and powering production systems used by thousands.

This isn’t a role buried in abstraction — you’ll be close to the metal, solving real problems with real consequences.

What You’ll Do

• Maintain and optimise Ubuntu-based Linux systems running in a private cloud environment.
• Monitor, troubleshoot, and improve performance across systems and services.
• Manage production databases (PostgreSQL, Cassandra, Redis, Kafka) with a focus on reliability and scalability.
• Work on network infrastructure — including WireGuard tunnels, BGP configuration, and general network troubleshooting.
• Contribute to internal tooling (AMIs, automation, monitoring) and help shape the direction of infrastructure projects.
• Occasionally provide out-of-hours support as part of a shared rotation ( All within normal working hours Monday - Friday)

What We’re Looking For

• Deep experience running Linux systems in production — especially Ubuntu.
• Confidence in managing, tuning, and troubleshooting relational and distributed databases.
• Strong understanding of networking concepts — experience with VPNs, routing, and security best practices.
• Comfortable working independently, but with strong communication and documentation habits.
• Ability to collaborate with engineers across backend, DevOps, and infrastructure teams.

What We Offer

• Remote-first working environment (UK-based).
• Modern, straightforward hiring process (no take-home tests or endless rounds).
• A team that values trust, autonomy, and getting things done properly.

Hiring Process

• Intro Call – 20 minutes with the hiring manager to understand your experience and interests.
• 90 minute interview including – Focused conversation on Linux internals, debugging, and systems architecture.
• Team Session – Meet with peers to explore collaboration fit.
• Final Conversation– Discuss the company, role, and your expectations.