Security Engineer, Warwick (Hybrid)
£55,000 to £60,000 plus benefits
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 access to 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.
About The Role
As an Application Security Engineer, you will identify security risks, improve security controls, and support the secure delivery of applications and cloud services across the organisation. You will act as subject‑matter expert, helping teams adopt secure‑by‑design principles and modern application security practices.
Key Responsibilities
- Lead application security assessments and reviews to identify vulnerabilities and improvement opportunities.
- Work with project and development teams to securely design, build and deploy solutions in cloud environments.
- Support prioritisation and remediation of application and cloud security vulnerabilities.
- Integrate security tooling into development pipelines and promote a shift‑left approach to security.
- Help manage risks associated with third‑party libraries, open‑source components, packages and build artefacts.
- Use and support application security testing tools, including SAST, DAST and Infrastructure‑as‑Code security tools.
- Manage and enhance security technologies such as cloud security platforms, web application firewalls and monitoring solutions.
- Automate security processes to improve efficiency, visibility and protection.
- Support incident response activities, investigations and root‑cause analysis.
- Collaborate with Security Architecture, Identity and Access Management and Governance, Risk & Compliance teams to drive continuous improvement.
Mandatory: Must be willing to participate in mandatory 24/7 standby/on‑call rota.
About You
You have strong technical security expertise and a passion for improving application security in complex environments.
Preferred Qualifications
- Experience in a cyber security, application security or security engineering role.
- Strong software development or scripting skills in languages such as Java, C#, Python or JavaScript.
- Hands‑on experience using application security testing tools and technologies.
- Experience securing cloud environments, especially Microsoft Azure and/or Google Cloud Platform.
- 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, able to influence technical and non‑technical audiences.
- A degree in Computer Science, Information Security or 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 – 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 support if unable to work due to long‑term illness or injury
- Family‑friendly provisions – maternity, paternity, adoption, surrogacy, shared parental leave
- Career progression, professional training and development
- Employee assistance programme offering confidential professional counselling 24/7
- Financial support to cover professional membership subscriptions and study support
Security Clearance
The successful candidate must achieve and maintain Security Check (SC) security clearance for this role. Must meet mandatory national security clearance obligations.
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