Lead OT Security Engineer - CNI

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 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 a Lead OT Security Engineer to strengthen the cybersecurity of our Critical National Infrastructure (CNI) and Operational Technology (OT) environments. You will focus on securing complex CNI/OT systems while collaborating with internal stakeholders, and be NGET’s primary technical lead in engagement with Ofgem, NCSC and DESNZ on CNI security enhancements. 

 
Monitoring and tracking performance on established drivers, and conducting security assessments, you’ll maintain an awareness of evolving regulatory requirements and industry trends.

 
You’ll support the business in developing and maintaining the Cyber and security capabilities necessary to continue to perform, working strategically as security lead for defining the security roadmap for the CNI environment. 

 
This role is based in Warwick for 2 days per week and can be combined with hybrid working from home.

What you'll need

• Experience in CNI protection, critical infrastructure cybersecurity or data centre security. 
• Proven expertise in securing high-availability data centres, including knowledge of redundancy models, network segmentation and disaster recovery planning.
• Good understanding of OT Security Architecture best practices in line with IEC 62443.
• Good understanding of security frameworks such as NCSC CAF, NIS-D, NIST 800-53/800-82, ISO 27001. 
• Hands-on experience with firewall configuration, IDS/IPS deployment, networking monitoring solutions and SIEM configuration is desirable.
• Desirable qualifications include CISSP, GICSP, ISA/IEC 62443 expert or equivalent.
• Experience in Electricity Transmission, Gas Transmission is desirable.
• Experience collaborating across multi-disciplinary teams, such as IT, OT, and security functions, with strong stakeholder management skills.
• A good understanding of National Grid’s business objectives and its obligations to wider industry participants and regulatory authorities.
• Demonstrated analytical and problem-solving capabilities.
   

What's in it for you?

• A salary of £59,000 to £74,000 + 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 23rd April 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. 

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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At National Grid, we work towards the highest standards in everything we do, including how we support, value and develop our people. Our aim is to encourage and support employees to thrive and be the best they can be. We celebrate the difference people can bring into our organisation, and welcome and encourage applicants with diverse experiences and backgrounds, and offer flexible and tailored support, at home and in the office.

Our goal is to drive, develop and operate our business in a way that results in a more inclusive culture. All employment is decided on the basis of qualifications, the innovation from diverse teams & perspectives and business need. We are committed to building a workforce so we can represent the communities we serve and have a working environment in which each individual feels valued, respected, fairly treated, and able to reach their full potential.