Senior System Administrator
🔒 Confidential Employer
Posted 20 April 2026
LOCATION
Reading
TYPE
Full-time
LEVEL
Mid-Senior level
SALARY
£26,000 / year
CATEGORY
IT
This employer holds a UK Home Office sponsor license — sponsorship for this specific role is at the employer’s discretion
SKILLS
Active Directory Administration
VMWARE - ESXi
Linux
Windows
Docker
Kubernetes
FULL DESCRIPTION
Senior system administrator will be responsible for Windows, UNIX, Linux based platforms in relation to application function and performance.
Job Responsibilities
- Active Directory Administration, VMWARE – ESXi – Dell, IBM BLADE Centre H, Cisco UCS.
- Attend customer sites to Installs and upgrades all applications across on-premise and Cloud platforms.
- Performing User Acceptance testing and getting approval on successful completion.
- Troubleshooting issues with containerized applications running on Docker or Kubernetes
- Assists in installing, configuring, and operating monitoring software and data bases.
- Develop documentations describing installation specific configurations and processes.
- Perform on call duty to provide remote support to customer, company engineers and staff.
- Experience maintaining applications
- Experience administrating Linux and Windows operating systems
- Knowledge of SQL Server/Databases
- Knowledge and experience with CI/CD pipelines
- Understanding of Cloud Technologies (Azure)
- Experience with Docker, Kubernetes or similar is preferable.
PERSONAL ATTRIBUTES
- Good communication skills, verbal and written
- Punctual and reliable
- Positive, enthusiastic and supportive individual
- Ability to take ownership or to identify when escalation is necessary
- Ability to work under pressure
- Ability to work in a team and to support team members
- Communication and interpersonal skills including listening, building rapport, establishing empathy whilst demonstrating awareness of internal and external issues in a calm and polite manner
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