51 Senior Systems Administrator jobs in the United Kingdom

Systems Administrator

Hybrid - 3 days per week in the Maidenhead Office

As a Systems Administrator you will be supporting both internal and external hosted systems by managing hardware and software infrastructure. You'll play a key role in supporting Hosted operations, handling complex support requests, collaborating across departments, and maintaining high availability and performance of systems.

Key Responsibilities

• • Monitor, identify, and correct issues with platforms including HyperV, Application Support, Server, SAN/NAS etc
  • Design and select storage, data centre, network, and client/server environments to design solutions in line with industry best practice.
  • Maintain assigned portals/websites, using content creation and management tools as well as digital media.
  • Perform website/applications software tests and respond to user emails to monitor, diagnose, and correct performance issues.
  • Provide fault isolation and resolution to limit and address issues promptly.
  • Communicate effectively across technical teams when working on, through or escalating issues.

Technical Skills:

• • Solid foundation in networking principles.
  • Proficiency in Windows Server and Active Directory administration and issue resolution.
  • Strong understanding of Windows Clustering for high-availability services.
  • Experience with Windows backup solutions - Veeam preferred
  • Experience administering SAN solutions (e.g., provisioning, monitoring).
  • Good understanding of Windows Server Update Services (WSUS).
  • Good understanding of SQL Server - including monitoring, troubleshooting, and basic maintenance.
  • Experience with Windows Certificate Management is a plus.
  • Ability to write/debug PowerShell scripts for automation and system tasks.
  • Good to great understanding of switch configuration and firewall rule sets is a strong plus.
  • Barracuda platform knowledge - including Load Balancer, Web Application Firewall (WAF), and NextGen Firewall - is highly desirable.
  • Cisco ASA firewall experience is a strong bonus
  • Hands-on experience with Hyper-V vitalisation platform - Including clustering/clustered storage
  • A good understanding of PCI-DSS Practice is a plus

Spectrum IT Recruitment (South) Limited is acting as an Employment Agency in relation to this vacancy.

Are you a Linux-savvy problem solver who thrives in a fast-paced IT environment?
Do you enjoy managing servers, securing systems, and supporting technical teams?

If YES, you could be the Systems Administrator  we’re looking for!

Why join us?

• Competitive salary
li>Hybrid working flexibility
• Career development opportunities
• Member of an Employee-owned trust
• Training and development support
• Work with cutting-edge infrastructure and automation tools

What will you be doing?

• Manage Linux and Windows VMs (OVS/KVM), backups, and disaster recovery
• Apply OS and security patches across customer estates
• Monitor system performance and respond to alerts
• Support software engineering teams and troubleshoot server issues
• Use tools like Nagios, Jira, Confluence, and Bitbucket
• Collaborate with Hotline, MIS, and Information Security teams

What do we need from you?

• Bachelor’s degree in Computer Science or related field
< i>Extensive experience in Linux system administration and networking
• Strong knowledge of VM hosts, server hardware, and software inventory
• Familiarity with backup/DR, performance testing, and server hardening

Ready to be the backbone of our IT infrastructure and support systems?

Apply now to join Logistex as a Systems Administrator  and make a real impact!

Your New Company and Role

A public sector organisation is seeking a skilled Systems Administrator to join their team on a contract basis. This hybrid role offers a dynamic mix of business-as-usual support and project work, including the implementation of a new software module. You'll collaborate with suppliers and internal stakeholders to ensure smooth delivery and system performance. There are 2 roles with our client, with both serving as cover for long-term leave.

What You'll Need to Succeed

• Strong experience in systems administration within enterprise environments.
• Solid understanding of infrastructure, networking, and system security.
• Proven ability to manage both BAU and project responsibilities.
• Experience supporting ticket resolution in collaborating with 2nd-line support.
• Comfortable working with third-party suppliers and engaging stakeholders.

What you need to do now


If you're interested in this role, click 'apply now' to forward an up-to-date copy of your CV, or call us now.
If this job isn't quite right for you, but you are looking for a new position, please contact us for a confidential discussion about your career.

Hays Specialist Recruitment Limited acts as an employment agency for permanent recruitment and employment business for the supply of temporary workers. By applying for this job you accept the T&C's, Privacy Policy and Disclaimers which can be found at (url removed)

On behalf of our long-standing client based in Lancashire, we are recruiting for a full-time, on-site Systems Administrator. In this role, you will manage and support the organisation’s IT systems, infrastructure, ensuring security, reliability, and optimal performance. 

The Systems Administrator will be responsible for:

• Managing and maintaining server infrastructure (virtual and physical).
li>Administering and supporting VMware platforms.
• Overseeing Microsoft 365 and Azure environments, including domain setups and security.
• Configuring and managing firewalls, and supporting networks (VLANs, switches).
• Producing accurate documentation and reports.
• Assisting with IT projects, supplier liaison, and technology upgrades.

The Systems Administrator will have the following:

• Proven experience in server infrastructure administration.
• Strong VMware skills.
• Microsoft 365 and Azure administration expertise.
• Good understanding of firewalls and networking fundamentals.
• Strong documentation and reporting skills.

Benefits:

• Competitive salary.
• Potential for KPI target-set bonus.
• Opportunity to gain certifications and qualifications.
• Scope for progression within the organisation.
• Access to company pool cars for work-related travel.

How to Apply if you’re Interested in this Job:

If this sounds like your perfect role, click Apply without delay!

Systems Administrator – Lancashire – Up to £40k

Systems Administrator

Hybrid - 3 days per week in the Maidenhead Office

As a Systems Administrator you will be supporting both internal and external hosted systems by managing hardware and software infrastructure. You'll play a key role in supporting Hosted operations, handling complex support requests, collaborating across departments, and maintaining high availability and performance of systems.

Key Responsibilities

• • Monitor, identify, and correct issues with platforms including HyperV, Application Support, Server, SAN/NAS etc
  • Design and select storage, data centre, network, and client/server environments to design solutions in line with industry best practice.
  • Maintain assigned portals/websites, using content creation and management tools as well as digital media.
  • Perform website/applications software tests and respond to user emails to monitor, diagnose, and correct performance issues.
  • Provide fault isolation and resolution to limit and address issues promptly.
  • Communicate effectively across technical teams when working on, through or escalating issues.

Technical Skills:

• • Solid foundation in networking principles.
  • Proficiency in Windows Server and Active Directory administration and issue resolution.
  • Strong understanding of Windows Clustering for high-availability services.
  • Experience with Windows backup solutions - Veeam preferred
  • Experience administering SAN solutions (e.g., provisioning, monitoring).
  • Good understanding of Windows Server Update Services (WSUS).
  • Good understanding of SQL Server - including monitoring, troubleshooting, and basic maintenance.
  • Experience with Windows Certificate Management is a plus.
  • Ability to write/debug PowerShell scripts for automation and system tasks.
  • Good to great understanding of switch configuration and firewall rule sets is a strong plus.
  • Barracuda platform knowledge - including Load Balancer, Web Application Firewall (WAF), and NextGen Firewall - is highly desirable.
  • Cisco ASA firewall experience is a strong bonus
  • Hands-on experience with Hyper-V vitalisation platform - Including clustering/clustered storage
  • A good understanding of PCI-DSS Practice is a plus

Spectrum IT Recruitment (South) Limited is acting as an Employment Agency in relation to this vacancy.

Your New Company and Role

A public sector organisation is seeking a skilled Systems Administrator to join their team on a contract basis. This hybrid role offers a dynamic mix of business-as-usual support and project work, including the implementation of a new software module. You'll collaborate with suppliers and internal stakeholders to ensure smooth delivery and system performance. There are 2 roles with our client, with both serving as cover for long-term leave.

What You'll Need to Succeed

• Strong experience in systems administration within enterprise environments.
• Solid understanding of infrastructure, networking, and system security.
• Proven ability to manage both BAU and project responsibilities.
• Experience supporting ticket resolution in collaborating with 2nd-line support.
• Comfortable working with third-party suppliers and engaging stakeholders.

What you need to do now


If you're interested in this role, click 'apply now' to forward an up-to-date copy of your CV, or call us now.
If this job isn't quite right for you, but you are looking for a new position, please contact us for a confidential discussion about your career.

Hays Specialist Recruitment Limited acts as an employment agency for permanent recruitment and employment business for the supply of temporary workers. By applying for this job you accept the T&C's, Privacy Policy and Disclaimers which can be found at (url removed)

Are you a Linux-savvy problem solver who thrives in a fast-paced IT environment?
Do you enjoy managing servers, securing systems, and supporting technical teams?

If YES, you could be the Systems Administrator  we’re looking for!

Why join us?

• Competitive salary
li>Hybrid working flexibility
• Career development opportunities
• Member of an Employee-owned trust
• Training and development support
• Work with cutting-edge infrastructure and automation tools

What will you be doing?

• Manage Linux and Windows VMs (OVS/KVM), backups, and disaster recovery
• Apply OS and security patches across customer estates
• Monitor system performance and respond to alerts
• Support software engineering teams and troubleshoot server issues
• Use tools like Nagios, Jira, Confluence, and Bitbucket
• Collaborate with Hotline, MIS, and Information Security teams

What do we need from you?

• Bachelor’s degree in Computer Science or related field
< i>Extensive experience in Linux system administration and networking
• Strong knowledge of VM hosts, server hardware, and software inventory
• Familiarity with backup/DR, performance testing, and server hardening

Ready to be the backbone of our IT infrastructure and support systems?

Apply now to join Logistex as a Systems Administrator  and make a real impact!

On behalf of our long-standing client based in Lancashire, we are recruiting for a full-time, on-siteSystems Administrator. In this role, you will manage and support the organisations IT systems, infrastructure, ensuring security, reliability, and optimal performance.

The Systems Administrator will be responsible for:

• Managing and maintaining server infrastructure (virtual and physical).
• Admin.

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I am looking for a Systems Administrator for a company in Maidenhead. They work 3 days onsite, 2 days remote (Monday and Friday)

Please have a look at the description and hit apply if this could be of interest, I will then call to talk in more detail

As a Systems Administrator, you will support both internal and external hosted systems by managing hardware and software infrastructure. Youll play a k.

WHJS1_UKTJ