Senior Penetration Tester

National Grid plc; Warwick; Hybrid; GBP 100,000 - GBP 125,000; Full time

Job summary

A key energy provider in the UK is seeking a Senior Pen Tester to identify and exploit vulnerabilities in critical national infrastructure. The role involves conducting thorough penetration tests, writing detailed reports, and collaborating with IT teams to enhance security measures. Candidates should possess proven expertise in penetration testing, strong technical knowledge, and relevant certifications. This is a full-time position based in Warwick, with competitive salary and benefits including a hybrid working model.

Benefits

Competitive salary

Annual performance bonus

26 days' holiday plus 8 statutory days

Double-match pension

Flexible benefit scheme

Free gym and exercise classes

Free parking

Qualifications

• Proven penetration testing and ethical hacking experience.
• Strong attention to detail.
• Strong presenting and report writing skills.

Responsibilities

• Scope and perform penetration testing of Infrastructure and Cloud environments.
• Write clear penetration testing reports detailing findings.
• Collaborate with IT teams to implement security measures.

Skills

Penetration testing

Ethical hacking experience

Knowledge of Linux

Knowledge of Windows

Knowledge of Active Directory

Web application security

Scripting

AWS

Azure

Kubernetes

Education

Degree or recognized certification such as CompTIA PenTest+, CREST or OSCP

Tools

Cybersecurity tools

Job description

Full time, permanent (37 hours per week)

Competitive salary plus benefits (below)

National Gas is securing Britain’s energy. We are responsible for transporting gas to power stations, major industries, storage facilities, and more than half a million businesses and 24 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 clean energy future.

As a crucial part of our cyber security team, the Senior Pen Tester will proactively identify and exploit vulnerabilities within Enterprise and Critical National Infrastructure (CNI) system to help uncover security weakness and ensure resilience and security of gas transmission nationwide.

Join us, and help be the energy behind the change.

About the role:

The Senior Pen Tester will:

• Scope and perform penetration testing of a wide variety of Infrastructure, Cloud environments and applications
• Formulate testing plans based on relevant threat assessments
• Keep cybersecurity training and knowledge current by monitoring the latest security threats and্যান vulnerabilitieshim
• Write clear and límite penetration testing reports detailing findings and recommendations deliberately
• Provide recommendations for remediation of identified vulnerabilities.
• Collaborate with IT and development teams to facilitate the implementation of security measures and remediation of identified vulnerabilities.
• Ensure that penetration(${test} activities align with industry regulations, compliance standards, and organizational security policies.

About you:

• Proven penetration testing and ethical hacking experience.
• Strong knowledge of various operating systems and networks (especially Linux, Windows, and Active Directory).
• Knowledge of web application security.
• Experience with a variety of security tools and techniques and the ability to write scripts to automate tasks.
• A degree or recognized certification such as the CPTS penetration testing certification (e.g. CompTIA PenTest+, CREST or OSCP would be well regarded).
• Experience with cloud and container technologies (e.g. AWS, Azure, Kubernetes).
• Strong attention to detail.
• Strong presenting and report writing skills, with the ability to succinctly convey technical topic to a non‑technical audience.
• Team‑player.
• Intimate knowledge of CIS controls, NIST CSF, etc.
• Contribute to tool development, both software and hardware, as well as processes and infrastructure, to advance the capabilities of the practice.
• Ideally relevant experience in both IT and OT/ICS/CNI cyber security environments.

What we can offer you:

• Competitive salary, dependant on experience
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• Annual performance bonus of up to 6%,
• 26 days' holiday, plus 8 statutory days – plus option to buy 5 additional days,
• Double‑match pension – every £1 you put in, we add £2 (max company contribution 12%),
• Opt‑In flexible benefit scheme, including salary sacrifice private healthcare, dental insurance, technology plans, car plan and more,
• Financial protection with 10× 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, courses & certifications,
• Employee assistance programme offering free confidential professional counselling 24/7,
• Financial support to cover the cost of professional membership subscriptions relevant to your role.

Other 'nice to knows':

• Hybrid flexible working
• Dedicated research time
• Some travel (approximately once a month, to operational sites)
• Free gym and exercise classes onsite at our Warwick office,
• Canteen and coffee shop onsite,
• Free parking.

About us:

Gas is an essential part of a secure energy supply in Britain and will continue to play a vital role in the energy system for decades to come. More than ever, we need the security that gas brings to keep the lights on, businesses running, and homes warm. National Gas provides that security.

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. National Gas is Britain’s national gas network, providing secure energy to power the country, achieve net zero and maintain our industrial competitiveness.

At National Gas, we’re committed to building a workforce that reflects the communities that we serve. We celebrate the different experiences our colleagues bring and encourage applicants of all backgrounds to apply. To that end we want to support you during the interview process, please advise your recruitment partner if you require any reasonable adjustments.

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 (www.gov.uk).