33 System Administration jobs in the United Kingdom

Job title: Linux System administrator

Location : Cambridge- 3 Days a Week

Type: Contract

Client: Wipro

Mandatory Skills: Linux Admin

Experience: 5-8 Years

• Experience running and maintaining on-premise data centres

• Strong experience with Linux (Ubuntu / Centos)

• Experience enterprise storage including ISCSI and SAN technology

• Prior experience using automation tools (Ansible, Foreman etc)

• Knowledge of IP networking, DNS, and firewalling

• Experience with Python, shell scripts and command-line tools

• Knowledge of containerisation and related orchestration technologies

• Demonstrable experience of remediation projects, ideally within a PCI-DSS certified environment.

• Strong verbal & written communication skills and natural willingness to collaborate across teams and organisations.

• Naturally able & productive with ITSM tools such as Jira, ServiceNow etc.

Great to haves:

• Good knowledge of the various services and capabilities of cloud computing platforms; Ideally AWS

• Hyper-V, Microsoft AD, AAD & VMWare experience

• Experience maintaining OpenStack

• Experience maintaining build system, source code management, TeamCity and GitLab services

• Bachelor’s degree in a related field (Computer Science preferred) or equivalent experience

Program/Project Overview

M&A Feature space O&I integration

Engagement Deliverable(s)

Get to target state program and integration of Feature Space

Senior Systems Administrator | Linux , RedHat , Ansible and VMWARE

UK | Remote | Full-Time

We’re looking for a highly experienced Senior Systems Administrator to take the lead on managing and optimising our IT infrastructure — with a strong focus on Linux automation, and enterprise-grade system performance.

What You’ll Be Doing

• Administer and monitor enterprise systems, ensuring high availability in a Linux environment.
• Lead and manage a VMware virtualised environment : upgrades, provisioning, and performance tuning
• Automate infrastructure using tools like Ansible , PowerShell, or Bash
• Implement robust backup and disaster recovery strategies
• Enforce security measures, conduct audits, and ensure compliance
• Troubleshoot complex system issues and support continuous improvement
• Document system configurations and generate performance reports

What You’ll Bring

• 6+ years in systems administration or infrastructure engineering
• VMware experience (upgrade, provisioning, tuning)
• Strong skills in Ansible and other automation/scripting tools
• Solid Linux/Windows OS knowledge
• Experience with Red Hat Satellite and patching infrastructure
• Excellent problem-solving and communication skills
• Relevant certifications (VCP, MCSA, RHCE, etc.) are a plus

What We’re Looking For

• Proactive mindset with strong ownership and accountability
• Adaptable, collaborative, and eager to learn
• Confident decision-maker who thrives under pressure
• Strong ethical conduct and a team-first attitude

Why Join?

You’ll have the chance to work in a high-impact role where your technical expertise directly supports innovation, resilience, and growth. This is an opportunity to shape and secure the backbone of a modern IT environment.

We are seeking a talented Network Administrator to join our IT department. The Network Administrator will be responsible for maintaining our network infrastructure, ensuring its security, and optimizing its performance. If you have a passion for networking and a strong technical background, we want to hear from you!

• Design, implement, and manage network infrastructure
• Monitor network performance and troubleshoot issues
• Ensure network security and data protection
• Collaborate with IT team to implement network upgrades and expansions
• Provide technical support to end users

• Bachelor's degree in Computer Science or related field
• Proven experience as a Network Administrator or similar role
• Strong knowledge of networking protocols and technologies
• Experience with network security and data protection
• Excellent problem-solving skills
• Ability to work well in a team environment

If you are passionate about networking and have the skills and experience we are looking for, we encourage you to apply for this exciting opportunity!

Network Administrator

Closing Date: 18th August 2025

Location: RG7 4PR , located between Reading and Basingstoke, with free onsite parking .

Due to the classified nature of the work involved, there are limited opportunities to work from home in this role. It is anticipated that the successful candidate will spend the majority of their time working on site at AWE Aldermaston.

Package: 46,130 - 60,000 (depending on your suitability, qualifications, and level of experience)

A relocation package may be available (terms and conditions apply).

Working pattern: AWE operates a 9-day working fortnight. We will consider flexible working requests so that your work may fit in with your lifestyle. Just let us know your preferred working pattern on your application.

Let us introduce the role

AWE is currently recruiting for a Network Administrator to join the High-Performance Computing Group , which sits within our Physics sub-function.

This role is ideally suited to an experienced network professional who is comfortable working in a multivendor environment.

Working within the High-Performance Computing Group, the successful candidate will be part of a small team that provides specialised network support to a range of teams within the group. It will involve working across the AWE site and possibly at other locations in the UK.

You will be expected to play a part in designing, maintaining, and troubleshooting the network that provides connectivity to some of the UK's largest supercomputers and supporting infrastructure.

The ability to work with others and to communicate clearly are essential

Who are we looking for?

We do need you to have the following:

• A degree in a Computer Science related subject or significant relevant experience.

• Network design, installation and decommissioning experience.

Whilst not to be considered a tick list, we'd like you to have experience in some of the following:

• Data Centre technologies such as underlay / overlay networks and non-blocking network designs.

• Proven experience working with some of: Arista, Extreme Networks, Fortigate, Paloalto Networks.

• Troubleshooting and monitoring multiple vendors in an enterprise environment.

• Linux experience and scripting in a Linux environment.

• Fibre optics and troubleshooting fibre infrastructure within a Local Area Network (LAN).

• A willingness to travel both in the UK and occasionally overseas.

You'll need to have the ability to work calmly and constructively in a priority changing environment and be able to manage your own workload. You will also have initiative, enthusiasm, a flexible approach, and ability to work to tight deadlines.

Some reasons we think you'll love it here:

AWE has wide range of benefits to suit you. These include:

• 9-day working fortnight - meaning you get every other Friday off work, in addition to 270 hours of annual leave.

• Market leading contributory pension scheme (we will pay between 9% and 13% of your pensionable pay depending on your contributions).

• Family friendly policies: Maternity Leave - 39 Weeks Full Pay and Paternity Leave - 4 Weeks Full Pay.

• Opportunities for Professional Career Development including funding for annual membership of a relevant professional body.

• Employee Assistance Programme and Occupational Health Services.

• Life Assurance (4 x annual salary).

• Discounts - access to savings on a wide range of everyday spending.

• Special Leave Policy including paid time off for volunteering, public service (including reserve forces) and caring.

The 'Working at AWE' page on our website is where you can find full details in the 'AWE Benefits Guide'.

#LI-KT

Network Administrator

Closing Date: 18th August 2025

Location: RG7 4PR , located between Reading and Basingstoke, with free onsite parking .

Due to the classified nature of the work involved, there are limited opportunities to work from home in this role. It is anticipated that the successful candidate will spend the majority of their time working on site at AWE Aldermaston.

Package: 46,130 - 60,000 (depending on your suitability, qualifications, and level of experience)

A relocation package may be available (terms and conditions apply).

Working pattern: AWE operates a 9-day working fortnight. We will consider flexible working requests so that your work may fit in with your lifestyle. Just let us know your preferred working pattern on your application.

Let us introduce the role

AWE is currently recruiting for a Network Administrator to join the High-Performance Computing Group , which sits within our Physics sub-function.

This role is ideally suited to an experienced network professional who is comfortable working in a multivendor environment.

Working within the High-Performance Computing Group, the successful candidate will be part of a small team that provides specialised network support to a range of teams within the group. It will involve working across the AWE site and possibly at other locations in the UK.

You will be expected to play a part in designing, maintaining, and troubleshooting the network that provides connectivity to some of the UK's largest supercomputers and supporting infrastructure.

The ability to work with others and to communicate clearly are essential

Who are we looking for?

We do need you to have the following:

• A degree in a Computer Science related subject or significant relevant experience.

• Network design, installation and decommissioning experience.

Whilst not to be considered a tick list, we'd like you to have experience in some of the following:

• Data Centre technologies such as underlay / overlay networks and non-blocking network designs.

• Proven experience working with some of: Arista, Extreme Networks, Fortigate, Paloalto Networks.

• Troubleshooting and monitoring multiple vendors in an enterprise environment.

• Linux experience and scripting in a Linux environment.

• Fibre optics and troubleshooting fibre infrastructure within a Local Area Network (LAN).

• A willingness to travel both in the UK and occasionally overseas.

You'll need to have the ability to work calmly and constructively in a priority changing environment and be able to manage your own workload. You will also have initiative, enthusiasm, a flexible approach, and ability to work to tight deadlines.

Some reasons we think you'll love it here:

AWE has wide range of benefits to suit you. These include:

• 9-day working fortnight - meaning you get every other Friday off work, in addition to 270 hours of annual leave.

• Market leading contributory pension scheme (we will pay between 9% and 13% of your pensionable pay depending on your contributions).

• Family friendly policies: Maternity Leave - 39 Weeks Full Pay and Paternity Leave - 4 Weeks Full Pay.

• Opportunities for Professional Career Development including funding for annual membership of a relevant professional body.

• Employee Assistance Programme and Occupational Health Services.

• Life Assurance (4 x annual salary).

• Discounts - access to savings on a wide range of everyday spending.

• Special Leave Policy including paid time off for volunteering, public service (including reserve forces) and caring.

The 'Working at AWE' page on our website is where you can find full details in the 'AWE Benefits Guide'.

#LI-KT

We are seeking a skilled and motivated Network Administrator to manage, maintain, and improve our organizations network infrastructure. The successful candidate will be responsible for ensuring the integrity of high availability network infrastructure to provide maximum performance for users and services.

Freelancer Prox is the first platform that is completely free for both recruiters and job seekers. By creating a profile, your visibility increases globally, enabling faster hiring for both remote and onsite opportunities. We encourage professionals to build their profiles today to boost their chances of instant hiring across the world.

• Install, configure, and support network equipment including routers, switches, firewalls, VPNs, and wireless access points.

• Monitor network performance and troubleshoot issues to ensure high levels of availability and security.

• Manage and maintain LANs, WANs, Internet, and intranet systems.

• Perform regular backup operations and implement appropriate processes for data protection, disaster recovery, and failover procedures.

• Maintain network documentation and diagrams.

• Apply security patches and perform system upgrades, including service packs, patches, hotfixes, and security configurations.

• Implement and maintain network security measures such as firewalls, antivirus, and intrusion detection systems.

• Work with IT support team to provide tier-2/3 support to resolve technical issues.

• Analyze network traffic and provide capacity planning solutions.

• Stay updated with emerging network technologies and recommend improvements.

Education:

• Bachelors degree in Computer Science, Information Technology, or a related field (or equivalent work experience).

Certifications (preferred):

• Cisco Certified Network Associate (CCNA)

• CompTIA Network+

• Microsoft Certified: Azure Network Engineer Associate

• Palo Alto Networks Certified Network Security Engineer (PCNSE)

Experience:

• 2+ years of experience in a network administration or similar role.

• Proven experience with network diagnostics, monitoring tools, and procedures.

Skills:

• Strong knowledge of TCP/IP, DNS, DHCP, VPN, and other networking protocols.

• Experience with firewalls, routers, switches, and network hardware.

• Familiarity with cloud platforms (e.g., AWS, Azure, GCP) is a plus.

• Strong problem-solving, communication, and organizational skills.

• Ability to work independently and manage multiple tasks simultaneously.

Network Administrator

Closing Date: 18th August 2025

Location: RG7 4PR , located between Reading and Basingstoke, with free onsite parking .

Due to the classified nature of the work involved, there are limited opportunities to work from home in this role. It is anticipated that the successful candidate will spend the majority of their time working on site at AWE Aldermaston.

Package: 6,130 - 0,000 (depending on your suitability, qualifications, and level of experience)

A relocation package may be available (terms and conditions apply).

Working pattern: AWE operates a 9-day working fortnight. We will consider flexible working requests so that your work may fit in with your lifestyle. Just let us know your preferred working pattern on your application.

Let us introduce the role

AWE is currently recruiting for a Network Administrator to join the High-Performance Computing Group , which sits within our Physics sub-function.

This role is ideally suited to an experienced network professional who is comfortable working in a multivendor environment.

Working within the High-Performance Computing Group, the successful candidate will be part of a small team that provides specialised network support to a range of teams within the group. It will involve working across the AWE site and possibly at other locations in the UK.

You will be expected to play a part in designing, maintaining, and troubleshooting the network that provides connectivity to some of the UK's largest supercomputers and supporting infrastructure.

The ability to work with others and to communicate clearly are essential

Who are we looking for?

We do need you to have the following:

• A degree in a Computer Science related subject or significant relevant experience.

• Network design, installation and decommissioning experience.

Whilst not to be considered a tick list, we'd like you to have experience in some of the following:

• Data Centre technologies such as underlay / overlay networks and non-blocking network designs.

• Proven experience working with some of: Arista, Extreme Networks, Fortigate, Paloalto Networks.

• Troubleshooting and monitoring multiple vendors in an enterprise environment.

• Linux experience and scripting in a Linux environment.

• Fibre optics and troubleshooting fibre infrastructure within a Local Area Network (LAN).

• A willingness to travel both in the UK and occasionally overseas.

You'll need to have the ability to work calmly and constructively in a priority changing environment and be able to manage your own workload. You will also have initiative, enthusiasm, a flexible approach, and ability to work to tight deadlines.

Some reasons we think you'll love it here:

AWE has wide range of benefits to suit you. These include:

• 9-day working fortnight - meaning you get every other Friday off work, in addition to 270 hours of annual leave.

• Market leading contributory pension scheme (we will pay between 9% and 13% of your pensionable pay depending on your contributions).

• Family friendly policies: Maternity Leave - 39 Weeks Full Pay and Paternity Leave - 4 Weeks Full Pay.

• Opportunities for Professional Career Development including funding for annual membership of a relevant professional body.

• Employee Assistance Programme and Occupational Health Services.

• Life Assurance (4 x annual salary).

• Discounts - access to savings on a wide range of everyday spending.

• Special Leave Policy including paid time off for volunteering, public service (including reserve forces) and caring.

The 'Working at AWE' page on our website is where you can find full details in the 'AWE Benefits Guide'.

#LI-KT

Network Administrator - Aldermaston, Berkshire, RG7 4PR

Network Administrator

Closing Date: 18th August 2025

Location: RG7 4PR , located between Reading and Basingstoke, with free onsite parking .

Due to the classified nature of the work involved, there are limited opportunities to work from home in this role. It is anticipated that the successful candidate will spend the majority of their time working on site at AWE Aldermaston.

Package: 6,130 - 0,000 (depending on your suitability, qualifications, and level of experience)

A relocation package may be available (terms and conditions apply).

Working pattern: AWE operates a 9-day working fortnight. We will consider flexible working requests so that your work may fit in with your lifestyle. Just let us know your preferred working pattern on your application.

Let us introduce the role

AWE is currently recruiting for a Network Administrator to join the High-Performance Computing Group , which sits within our Physics sub-function.

This role is ideally suited to an experienced network professional who is comfortable working in a multivendor environment.

Working within the High-Performance Computing Group, the successful candidate will be part of a small team that provides specialised network support to a range of teams within the group. It will involve working across the AWE site and possibly at other locations in the UK.

You will be expected to play a part in designing, maintaining, and troubleshooting the network that provides connectivity to some of the UK's largest supercomputers and supporting infrastructure.

The ability to work with others and to communicate clearly are essential

Who are we looking for?

We do need you to have the following:

• A degree in a Computer Science related subject or significant relevant experience.

• Network design, installation and decommissioning experience.

Whilst not to be considered a tick list, we'd like you to have experience in some of the following:

• Data Centre technologies such as underlay / overlay networks and non-blocking network designs.

• Proven experience working with some of: Arista, Extreme Networks, Fortigate, Paloalto Networks.

• Troubleshooting and monitoring multiple vendors in an enterprise environment.

• Linux experience and scripting in a Linux environment.

• Fibre optics and troubleshooting fibre infrastructure within a Local Area Network (LAN).

• A willingness to travel both in the UK and occasionally overseas.

You'll need to have the ability to work calmly and constructively in a priority changing environment and be able to manage your own workload. You will also have initiative, enthusiasm, a flexible approach, and ability to work to tight deadlines.

Some reasons we think you'll love it here:

AWE has wide range of benefits to suit you. These include:

• 9-day working fortnight - meaning you get every other Friday off work, in addition to 270 hours of annual leave.

• Market leading contributory pension scheme (we will pay between 9% and 13% of your pensionable pay depending on your contributions).

• Family friendly policies: Maternity Leave - 39 Weeks Full Pay and Paternity Leave - 4 Weeks Full Pay.

• Opportunities for Professional Career Development including funding for annual membership of a relevant professional body.

• Employee Assistance Programme and Occupational Health Services.

• Life Assurance (4 x annual salary).

• Discounts - access to savings on a wide range of everyday spending.

• Special Leave Policy including paid time off for volunteering, public service (including reserve forces) and caring.

The 'Working at AWE' page on our website is where you can find full details in the 'AWE Benefits Guide'.

#LI-KT