Penetration Tester – Telecommunications (Standard & Senior Roles Available)
Location: UKTL Offices, Birmingham (Hybrid – minimum 2 days onsite per week)
Work Options: Full-time, part-time, or flexible arrangements where business needs allow.
Security Testing Roles – Dive Deep, Make an Impact
We’re looking for passionate security professionals who 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 driven by the real-world impact your work can have.
You’ll join a collaborative, inclusive team that values expertise, diverse perspectives, and mutual support. We’ll give you the freedom to explore, experiment, and grow — while contributing to the development of robust, secure networks that matter.
What You’ll Be Doing
For Penetration Tester:
Testing hardware and software components to uncover vulnerabilities in complex systems.
Using positive and negative testing techniques (including fuzzing) to push network functions and protocols to their limits.
Scripting and automating assessments to boost efficiency and repeatability.
Investigating and communicating findings clearly, showcasing technical risks and their implications.
Contributing to high-quality technical reports that are thorough, insightful, and actionable.
For Senior Penetration Tester:
Steering technical assessments of telecoms equipment, identifying vulnerabilities and guiding the direction of testing activities.
Mentoring and supporting junior team members, fostering their development through hands-on guidance and knowledge sharing.
Helping to shape the overall test strategy and approach.
Applying advanced testing techniques and leading scripting/automation efforts.
Producing high-quality technical reports and influencing security improvements.
About You
We’re seeking individuals who:
Thrive in technical environments and enjoy solving complex problems.
Bring fresh ideas and collaborate effectively with others.
Are passionate about security testing and eager to keep learning.
Have hands-on experience in penetration testing and a solid understanding of exploitation techniques.
For senior roles, you’ll also demonstrate leadership qualities and experience mentoring others.
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.
Location & Flexibility
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 — full-time, part-time, or flexible options may be possible depending on the role and business needs.
Security Requirements
Due to the nature of our work, nationality, residency, and security requirements are tightly defined. You must hold SC clearance with no restrictions or have the ability to obtain it.