Linux Infrastructure Engineer
Oscar
Overview
In this role you will manage and optimise multi-tenant hosting infrastructure with a strong focus on virtualization, Windows and Linux server administration, backup, and automation. You will handle both BAU support and project work, acting as a 3rd-line escalation point to improve performance, reliability and efficiency. You’ll work across hosting platforms and data centres, contributing to capacity planning and documentation. This is a hands-on role with meaningful impact on platform stability and automation.
Responsibilities- Administer and support virtualised environments including VM lifecycle management and host maintenance
- Troubleshoot Windows Server and Linux performance, CPU/RAM, disk I/O, networking, backups and app failures
- Manage backup and disaster recovery with Veeam and R1Soft, including restores
- Support Plesk and cPanel hosting platforms (web, DNS, email, databases, SSL, PHP versions)
- Migrate websites, servers and hosting between platforms and data centres
- Support databases (MySQL/MariaDB, SQL Server) including restores and performance troubleshooting
- Monitor infrastructure with Zabbix and LibreNMS, assist capacity planning
- Contribute to infrastructure projects involving OpenNebula and AWS backup solutions
- Develop automation using PowerShell, Bash and Python to boost efficiency
- Provide 3rd-line escalation with root cause analysis, customer updates and change plans
- Maintain technical documentation, runbooks and SOPs
- Proven experience as a Systems Administrator or Infrastructure Engineer
- Strong Windows Server and Linux administration (RHEL, CentOS, Ubuntu)
- Hands-on experience with VMware vSphere/ESXi and/or KVM virtualization
- Experience with backup and DR platforms such as Veeam and R1Soft
- Knowledge of hosting control panels (Plesk, cPanel)
- Familiarity with web hosting tech, DNS, SSL, email services and DB administration
- Scripting experience (PowerShell, Bash and/or Python)
- Experience with monitoring tools such as Zabbix or LibreNMS
- Troubleshooting skills and root cause analysis abilities
- Understanding of ITIL, change management and security standards (ISO 27001)
- Troubleshooting
- Attention to detail
- Strong communication
- Windows Server administration
- Linux administration (RHEL/CentOS/Ubuntu)
- VMware vSphere/ESXi
Reference: WJ-747_31186908