Penetration Tester
| Posting date: | 24 September 2025 |
|---|---|
| Hours: | Full time |
| Closing date: | 24 October 2025 |
| Location: | Solihull, West Midlands |
| Remote working: | Hybrid - work remotely up to 3 days per week |
| Company: | National Physical Laboratory |
| Job type: | Permanent |
| Job reference: | 1553 |
Summary
Security Testing Role – Dive Deep, Make an Impact
You love uncovering what’s beneath the surface. Whether it’s a telecoms protocol or a complex IT system, you’re motivated to understand how things work — and how they can be made more secure. You bring a hands-on mindset to testing and analysis, and you’re motivated by the real-world impact your work can have.
In this role, you’ll be part of a collaborative, inclusiveteam that values fresh ideas, different perspectives, and mutual support. You’ll have the freedom to explore, experiment, and grow — all while helping to build more resilient networks.
What You’ll Be Doing
Testing hardware and software components to uncover vulnerabilities in complex systems.
Use positive and negative testing techniques (including fuzzing) to push network functions and protocols to their limits.
Script and automate your assessments to boost efficiency and repeatability.
Investigate and communicate your findings clearly, showcasing the technical risks and their implications
Contribute to high-quality technical reports that are thorough, insightful, and actionable.
Successful Applicants must be able to commute to the UKTL offices in Birmingham at least twice a week
We strive to offer a great work life balance - if you are looking for full time, part time or flexible options, we will try to make this work where business possible. This will be dependent on the kind of role you do and part of the business you work in
What You’ll Learn
You’ll either bring existing knowledge of telecoms protocols like Diameter, HTTP/2, SCTP, NGAP— or show the curiosity and aptitude to learn. Either way, we’ll promote your growth.
You’ll get access to top-tier learning platforms, including:
Offensive Security Learn Unlimited Subscription with Exam attempts included.
Hack The Box
PentesterLab subscription
Plus telecoms-specific online learning resources
What We’re Looking For
You’re someone who:
Thrives in technical environments and enjoys solving complex problems
Brings fresh ideas and collaborate aswell with others
Is passionate about security testing and eager to keep learning
If this sounds like you, we’d love to hear from you. Let’s build something secure together.
We actively recruit citizens of all backgrounds, but the nature of our work in this specific area means that nationality, residency and security requirements are more tightly defined than others. To work in this role, you will need to have an SC clearance with no restrictions, or you must have the ability to obtain an SC clearance.
You love uncovering what’s beneath the surface. Whether it’s a telecoms protocol or a complex IT system, you’re motivated to understand how things work — and how they can be made more secure. You bring a hands-on mindset to testing and analysis, and you’re motivated by the real-world impact your work can have.
In this role, you’ll be part of a collaborative, inclusiveteam that values fresh ideas, different perspectives, and mutual support. You’ll have the freedom to explore, experiment, and grow — all while helping to build more resilient networks.
What You’ll Be Doing
Testing hardware and software components to uncover vulnerabilities in complex systems.
Use positive and negative testing techniques (including fuzzing) to push network functions and protocols to their limits.
Script and automate your assessments to boost efficiency and repeatability.
Investigate and communicate your findings clearly, showcasing the technical risks and their implications
Contribute to high-quality technical reports that are thorough, insightful, and actionable.
Successful Applicants must be able to commute to the UKTL offices in Birmingham at least twice a week
We strive to offer a great work life balance - if you are looking for full time, part time or flexible options, we will try to make this work where business possible. This will be dependent on the kind of role you do and part of the business you work in
What You’ll Learn
You’ll either bring existing knowledge of telecoms protocols like Diameter, HTTP/2, SCTP, NGAP— or show the curiosity and aptitude to learn. Either way, we’ll promote your growth.
You’ll get access to top-tier learning platforms, including:
Offensive Security Learn Unlimited Subscription with Exam attempts included.
Hack The Box
PentesterLab subscription
Plus telecoms-specific online learning resources
What We’re Looking For
You’re someone who:
Thrives in technical environments and enjoys solving complex problems
Brings fresh ideas and collaborate aswell with others
Is passionate about security testing and eager to keep learning
If this sounds like you, we’d love to hear from you. Let’s build something secure together.
We actively recruit citizens of all backgrounds, but the nature of our work in this specific area means that nationality, residency and security requirements are more tightly defined than others. To work in this role, you will need to have an SC clearance with no restrictions, or you must have the ability to obtain an SC clearance.
Proud member of the Disability Confident employer scheme
Disability Confident
About Disability Confident
A Disability Confident employer will generally offer an interview to any applicant that declares they have a disability and meets the minimum criteria for the job as defined by the employer. It is important to note that in certain recruitment situations such as high-volume, seasonal and high-peak times, the employer may wish to limit the overall numbers of interviews offered to both disabled people and non-disabled people. For more details please go to Disability Confident.