System Administrator

About the role

National Grid Electricity Transmission (NGET) is at the heart of energy in the UK. The electricity we provide gets the nation to work, powers schools and brings energy to life. Our energy network connects the nation, so it is essential that it is continually evolving, advancing, and improving.

We’re passionate about both operating our network safely and providing a highly reliable quality of supply for our customers. At the heart of achieving these outcomes is the effective control and operation of our network.

We are seeking 2 System Administrators to work with NGET’s asset managers and IT administrators to maintain our Operational Technology (OT) environments. You’ll be working with Lead System Administrators and the Security team on the development of specifications and design of cybersecurity countermeasures, assisting in producing documentation for regulatory requirements.

Maintaining endpoints, patching, updating and monitoring, you’ll work with the Platform Security team to protect the endpoints from malware and ransomware.

Keeping up to date with the latest security trends, vulnerabilities, and technologies related to OT systems, you’ll assist in the maintenance and enhancement of web interfaces to ensure user-friendly access and functionality, participating in cybersecurity assessments and audits of the infrastructure to identify vulnerabilities and ensure compliance with security standards.

You’ll contribute to the development and implementation of security specifications, procedures, and

guidelines to safeguard critical systems and collaborate with cross-functional teams, to support the design of security controls and measures to protect OT systems from cyber threats. 

This role is based in Warwick for 2 days per week and can be combined with hybrid working from home.  This role is fixed term until 31st March 2026, with the possibility of transferring to a permanent position afterwards.

What you'll need

• Proven experience in administering IT-like infrastructure, with a solid understanding of DevOps methodologies to leverage automation effectively.
• Management of Endpoints, deployed across various locations.
• Experience in working on virtualised environments and managing Hypervisor. 
• Strong knowledge of networking concepts and protocols, with the ability to troubleshoot network-related issues.
• Basic understanding of web interface maintenance and SQL database tools and operations eg. SSIS/SSRS.
• Strong writing and presentation skills to communicate status, integrations, and usage to different audiences and stakeholders.
• Critical thinking with an analytical mind-set and adept at evaluating opportunities to reach goals, able to identify and address requirements from operational spaces.
• Awareness of OT, or industrial control systems (ICS), knowledge of electrical power systems and their operational requirements would be advantageous, but not essential.

What's in it for you?

• A salary of £54,000 to £66,000 + Benefits package + Training and Development.
• 26 days annual leave plus 8 statutory days, with the option to buy additional or sell holiday days. 
• Generous contributory pension scheme - we will double-match your contribution to a maximum company contribution of 12%. Overall 18%.
• Financial support to help cover the cost of professional membership subscriptions, course fees, books, exam fees and time off for study leave – relevant to your role. 
• Access to flexible benefits such as a share incentive plan, salary sacrifice car and technology schemes, support via employee assistance lines and matched charity giving to name a few. 
• Family care benefits including a back-up care service for when your usual care arrangements fall through (six paid days each year as standard with the option to purchase further days). 
• Access to apps that support health, fitness and wellbeing.

More Information

This role closes at midnight on 16th October 2025, however we encourage candidates to submit their application as early as possible and not wait until the published closing date as this can vary.

This role is offered as a fixed term contract/secondment until 31st March 2026, with the possibility of a permanent role afterwards.

Don’t meet every single requirement? At National Grid, we are committed to building a diverse, inclusive and authentic workplace for everyone. So if you are excited about this role but your experience or qualifications do not match the job description exactly, we encourage you to apply anyway. You might just be the right person for our growing business in this role or another one.  

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