Linux Infrastructure Engineer

Oscar Technology; East Midlands; Hybrid; GBP 40,000 - 50,000; Full time

Job summary

Oscar Technology is seeking a Systems Administrator to join a hybrid, Nottingham-based hosting and infrastructure team. The role focuses on Windows/Linux admin, virtualization, backups, and automation to support a multi-tenant environment.

You will handle BAU tasks, project work, and act as a 3rd-line escalation point, driving platform performance and reliability improvements.

Qualifications

• Proven experience in a Systems Administrator or Infra Engineer role.
• Strong Windows Server and Linux administration (RHEL/CentOS/Ubuntu).
• Hands-on virtualization with VMware vSphere/ESXi and/or KVM.
• Experience with Veeam and R1Soft for backup and disaster recovery.
• Familiarity with Plesk and cPanel hosting.
• Knowledge of web hosting technologies, DNS, SSL, email and databases.
• Scripting with PowerShell, Bash and/or Python.
• Experience with Zabbix or LibreNMS monitoring.
• Strong troubleshooting and root-cause analysis skills.
• Understanding ITIL, change management and ISO 27001.

Responsibilities

• Administer and support virtualised environments, including VM lifecycle management, resource optimisation, snapshots and host maintenance.
• Troubleshoot complex Windows Server and Linux issues across performance, CPU/RAM, disk I/O, networking, backups and app failures.
• Manage backup and disaster recovery using Veeam and R1Soft; monitor, optimise and restore.
• Support Plesk and cPanel hosting platforms, covering web, DNS, email, databases, SSL and PHP versions.
• Migrate websites and hosting between platforms and data centres.
• Work with MySQL/MariaDB and SQL Server; assist with restores and performance troubleshooting.
• Monitor infrastructure using Zabbix/LibreNMS; investigate alerts and capacity planning.
• Contribute to projects with OpenNebula and AWS backup solutions.
• Develop automation using PowerShell, Bash and Python.
• Provide 3rd-line escalation with root cause analysis and change plans.
• Maintain documentation, runbooks and SOPs to improve support processes.

Skills

Windows Server

Linux administration

VMware vSphere/ESXi

Backup and DR

Plesk & cPanel

Web hosting tech

Scripting (PowerShell Bash Python)

Monitoring (Zabbix LibreNMS)

ITIL / Change management / ISO 27001

OpenNebula / AWS backups

Tools

VMware vSphere/ESXi

Veeam

R1Soft

Plesk

cPanel

Zabbix

LibreNMS

OpenNebula

AWS backup solutions

Job description

Systems Administrator - Hosting & Infrastructure

Location: Nottingham (Hybrid - 3 days on-site)
Salary: £40,000-£50,000
Type: Full-Time Permanent

The Opportunity

I'm currently recruiting for a Systems Administrator to join a team supporting a diverse, multi-tenant hosting and infrastructure environment.

This is a hands‑on role with a strong focus on virtualisation, Windows and Linux server administration, backup and disaster recovery, and infrastructure automation. You'll be involved in both BAU support and project work, acting as a 3rd-line escalation point while helping improve platform performance, reliability and automation.

Key Responsibilities

• Administer and support virtualised environments, including VM lifecycle management, resource optimisation, snapshots and host maintenance.

• Troubleshoot complex Windows Server and Linux issues across performance, CPU/RAM utilisation, disk I/O, networking, backups and application failures.

• Manage backup and disaster recovery using Veeam and R1Soft, including monitoring, optimisation and full or granular restores.

• Support Plesk and cPanel hosting platforms, covering web, DNS, email, databases, SSL certificates and PHP versions.

• Carry out website, server and hosting migrations between platforms and data centres.

• Work with MySQL/MariaDB and SQL Server, supporting database restores, performance troubleshooting and customer investigations.

• Monitor infrastructure using Zabbix, LibreNMS and associated platform tools, investigating alerts and contributing to capacity planning.

• Contribute to infrastructure projects involving OpenNebula, AWS backup solutions and hosting platform improvements.

• Develop automation using PowerShell, Bash and Python to improve efficiency and reduce manual administration.

• Act as a 3rd-line escalation point, providing root cause analysis, customer updates and structured change plans.

• Maintain technical documentation, runbooks and SOPs to improve support processes and knowledge sharing.

What We're Looking For

• Proven experience in a Systems Administrator, Infrastructure Engineer or similar technical role.

• Strong Windows Server and Linux administration skills, ideally including RHEL, CentOS and Ubuntu.

• Hands‑on experience with VMware vSphere/ESXi and/or KVM-based virtualisation.

• Experience with backup and disaster recovery platforms such as Veeam and R1Soft.

• Knowledge of hosting control panels such as Plesk and cPanel.

• Familiarity with web hosting technologies, DNS, SSL, email services and database administration.

• Scripting experience with PowerShell, Bash and/or Python.

• Experience with infrastructure monitoring tools such as Zabbix or LibreNMS.

• Strong troubleshooting skills, with the ability to investigate complex technical issues and identify root causes.

• An understanding of ITIL processes, change management and security standards such as ISO 27001.

The Package

• Salary: £40,000-£50,000

• Location: Nottingham, with hybrid working (3 days on-site)

• Contract: Full-time, permanent

If you're a technically strong Systems Administrator looking for a role where you can take ownership of complex infrastructure, improve existing platforms and get involved in wider technical projects, I'd be keen to hear from you.