National Gas
Security Engineer
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Security Engineer, Warwick (Hybrid) – £55,000 to £60,000 plus benefits
Job Purpose
National Gas is securing Britain’s energy. We transport gas throughout Great Britain, repair and maintain gas pipelines, and manage the meters that allow millions of homes and businesses to access the energy they need. We are the national gas network, providing secure energy to power Britain, achieve net zero, and maintain our industrial competitiveness.
We're looking for an experienced Security Engineer to join our Cyber Security team and play a key role in protecting the applications and platforms that support National Gas.
This is an exciting opportunity to shape and strengthen application security across enterprise, operational technology (OT) and critical national infrastructure (CNI) environments. You'll work with developers, architects, and security specialists to embed security into the software development lifecycle, improve cloud security posture, and help ensure our applications remain resilient against evolving cyber threats.
Join us, and help be the energy behind the change.
About the role
As our Application Security Engineer, you'll be responsible for identifying security risks, improving security controls, and supporting the secure delivery of applications and cloud services across the organisation. You'll act as a subject matter expert, helping teams adopt secure-by-design principles and modern application security practices.
Key responsibilities include:
- Leading application security assessments and reviews to identify vulnerabilities and areas for improvement.
- Working with project and development teams to securely design, build, and deploy solutions in cloud environments.
- Supporting the identification, prioritisation, and remediation of application and cloud security vulnerabilities.
- Integrating security tooling into development pipelines and promoting a "shift-left" approach to security.
- Helping manage risks associated with third-party libraries, open-source components, packages, and build artefacts.
- Using and supporting application security testing tools, including SAST, DAST, and Infrastructure-as-Code security tools.
- Managing and enhancing security technologies such as cloud security platforms, web application firewalls, and monitoring solutions.
- Automating security processes to improve efficiency, visibility, and protection.
- Supporting incident response activities, investigations, and root cause analysis.
- Collaborating with Security Architecture, Identity and Access Management, and Governance, Risk & Compliance teams to drive continuous improvement.
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Please note: As the team evolves, this role may be required to participate in a 24/7 standby/on-call rota to support business continuity, respond to critical security incidents, and help maintain the resilience of our technology and operational environments.
About you
We're looking for someone with strong technical security expertise and a passion for improving application security in complex environments.
You'll ideally have:
- Experience working in a cyber security, application security, or security engineering role.
- Strong software development or scripting skills, with experience in languages such as Java, C#, Python, or JavaScript.
- Hands-on experience using application security testing tools and technologies.
- Experience securing cloud environments, particularly Microsoft Azure and/or Google Cloud Platform (GCP).
- Knowledge of security frameworks and standards such as OWASP, ISO 27001, and NIST.
- Experience using Microsoft Defender for Endpoint (MDE) and Cortex XDR.
- Strong analytical and problem-solving skills with the ability to assess and manage technical risk.
- Excellent communication and stakeholder management skills, with the ability to influence technical and non-technical audiences.
- A degree in Computer Science, Information Security, or a related discipline, or equivalent practical experience.
What we can offer you
- Salary from £55,000 to £60,000 (dependent on experience)
- Annual bonus of 6% based on personal and company performance
- 26 days’ holiday plus 8 statutory holidays – plus option to buy 5 additional days
- Double-match pension scheme - for every £1 you put in, we'll add £2 (max company contribution 12%)
- Opt-In flexible benefit scheme, including salary sacrifice private healthcare, dental insurance, technology plans, and more
- Financial protection with 10x salary death in service and financial support if you're unable to work due to long-term illness or injury
- Excellent family-friendly provisions - maternity/paternity/adoption/surrogacy/shared parental leave
- Career progression, professional training, and development
- Employee assistance programme offering free confidential professional counselling 24/7
- Financial support to cover the cost of professional membership subscriptions, and study support
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More Information
National Gas is securing Britain’s energy. Gas is an essential part of a secure energy supply in Britain, and will continue to play a vital role for decades to come. More than ever, we need the security that gas brings to keep the lights on, businesses running, and to protect jobs. National Gas provides that security.
We are responsible for transporting gas to power stations, major industries, storage facilities, more than 500,000 businesses, and 23 million homes through nearly 5,000 miles of pipes across Britain.
National Gas is also proud to lead the way in transforming the energy network for a net zero future. Gas provides the energy security to support renewable electricity generation, and we are developing our infrastructure to transport hydrogen and carbon dioxide across the country.
We are committed to building a workforce that represents the communities we serve. We celebrate the different experiences our colleagues bring to our organisation, and strongly encourage applicants of all backgrounds to apply.
Security Clearance
The successful candidate must be able to achieve and maintain Security Check (SC) security clearance for this role.
Many of the positions within our company are subject to national security clearance and Trade Control restrictions. This means that your eligibility for certain roles may be affected by your place of birth, nationality, current or former citizenship, and any residency you hold or have held. Further details are available at United Kingdom Security Vetting: clearance levels - GOV.UK.
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