Senior Linux System Administrator

VanRath; Belfast; Hybrid; GBP 45,000 - 65,000; Full time

Job summary

A technology-driven organisation is hiring a Senior Linux System Administrator to enhance their hybrid working infrastructure. This role includes designing, supporting, and improving Linux systems across on-premise and cloud platforms. Candidates should possess strong skills in Linux administration, shell scripting, networking fundamentals, and database management. The company values proactive problem-solving and offers opportunities for career progression and certification support.

Benefits

Competitive salary and pension contribution

Flexible working arrangements

Strong opportunities for career progression

Qualifications

• Strong hands-on experience administering Linux (Debian-based) systems in production.
• Proficiency in shell scripting (Bash, Python or similar) for automation.
• Solid understanding of networking fundamentals including TCP/IP, DNS, routing.

Responsibilities

• Design and implement automation for Linux infrastructure.
• Monitor system performance and respond to incidents.
• Contribute to improving reliability and security across the platform.

Skills

Linux (Debian-based)

Shell scripting (Bash, Python or similar)

Networking fundamentals (TCP/IP, DNS, routing, firewalls, VPNs, load balancing)

Database management (PostgreSQL, MySQL/MariaDB)

Security best practices

Incident, change, and problem management

Job description

Job Description

My client, a technology-driven organisation, is hiring a Senior Linux System Administrator to join an established infrastructure team operating in a hybrid working environment. This is a key role focused on the design, support, and continuous improvement of Linux-based systems across on-premise and cloud platforms.

• Competitive salary and pension contribution
• Hybrid working model (approx. 50/50 split)
• Flexible working arrangements
• Strong opportunities for career progression and certification support
• Exposure to modern cloud and infrastructure technologies
• High-quality technical equipment and employee benefits

You will be part of a collaborative, technically focused team responsible for maintaining highly available, secure, and scalable systems that support critical business services. The organisation values proactive problem-solving, automation, and continuous improvement.

As a Senior Linux System Administrator, you will take ownership of Linux infrastructure in production environments, working closely with development and operations teams. You will design and implement automation, support databases, monitor system performance, respond to incidents, and contribute to improving reliability and security across the platform.

The Person

• Strong hands-on experience administering Linux (Debian-based) systems in production
• Proficiency in shell scripting (Bash, Python or similar) for automation and tooling
• Solid understanding of networking fundamentals (TCP/IP, DNS, routing, firewalls, VPNs, load balancing)
• Experience managing and supporting databases such as:

• PostgreSQL
• MySQL / MariaDB
• Cloud-managed database services

• Proven ability to diagnose and resolve complex system issues
• Strong documentation skills with experience creating runbooks and operational procedures
• Excellent communication skills, able to work effectively with technical and non-technical stakeholders
• Experience implementing security best practices, patching, and access controls
• Familiarity with incident, change, and problem management processes

Desirable

• Experience with public cloud platforms and core infrastructure services
• Exposure to monitoring and observability tooling
• Familiarity with infrastructure as code, CI/CD pipelines, or configuration management tools
• Experience operating high-availability or large-scale environments
• Exposure to real-time or communications-based platforms

For further information on this role, or other Infrastructure and Systems Engineering opportunities, please apply via the link or contact a consultant for a confidential discussion.