Penetration Tester jobs in United Kingdom
Penetration Tester
CyberCX Pty Ltd
Penetration Tester — Junior to Grow in Cybersecurity
CyberCX Pty Ltd
Penetration Tester - Grow Tech Security Impact
Ultima Group
Discover more opportunities than anywhere else. Find more jobs nowSecurity Assurance Penetration Tester
RELX Group plc
Principal Penetration Tester
Methodfi
Security Assurance Penetration Tester - Web & Cloud Security
RELX Group plc
Connect with headhunters to apply for similar jobsLead Penetration Tester – Hybrid (Bristol/Malvern)
In Cork
Security Consultant II (AI/ML Penetration Tester)
NetSPI Inc.
Remote Penetration Tester — Web, App & Cloud Security
Cybaverse LTD
Senior Penetration Tester - Critical Infrastructure Security
National Grid plc
AI/ML Penetration Tester: Web Apps & Model Security
NetSPI Inc.
Remote Penetration Tester – Red Team for Defence
Thales Group
Penetration Tester
Job summary
A leading technology company in the UK is seeking an ambitious Penetration Tester to join their Security Testing Practice. You will deliver high-quality penetration tests, identify vulnerabilities, and contribute to continuous improvement. Required qualifications include hands-on experience in penetration testing, familiarity with security tools, and strong communication skills. The role offers competitive pay and a comprehensive benefits package, including generous holiday and parental leave policies.
Benefits
Qualifications
- 2+ years of experience in penetration testing or equivalent practical experience.
- Eligibility to obtain and maintain UK security clearances.
- Hands-on experience in IT Health Check delivery.
Responsibilities
- Support the delivery of IT Health Checks and penetration tests.
- Identify vulnerabilities and provide recommendations to clients.
- Work closely with senior consultants to share insights.
Skills
Education
Tools
Are you an ambitious cybersecurity professional with a passion for uncovering vulnerabilities and strengthening digital defences?
Join Ultima’s Security Testing Practice as a Penetration Tester and play a key role in protecting our clients’ critical systems. Working alongside experienced consultants, you’ll deliver high-quality penetration testing engagements, contribute to continuous improvement, and grow your expertise in a collaborative, knowledge-sharing environment.
Maintain your penetration testing qualifications and continue developing your technical expertise in line with business and client needs.
Deliver Quality Testing
Support the delivery of IT Health Checks and penetration tests, identifying vulnerabilities and providing clear, actionable recommendations to clients.
Collaborate and Learn
Work closely with senior consultants, sharing insights and best practices while contributing to a strong culture of learning within the Security Testing Practice.
Develop Broad Expertise
Expand your skill set to deliver a range of security testing services that support evolving business and client requirements.
You’ll also:
- Be passionate about the full security lifecycle
- Engage confidently with both technical and non-technical stakeholders
- Demonstrate curiosity, adaptability, and a solution-focused mindset
- Translate complex technical findings into clear, accessible reports
- Hands‑on experience in penetration testing or IT Health Check delivery
- A current penetration testing qualification such as:
- CREST Practitioner Security Analyst (CPSA)
- CREST Registered Tester (CRT)
- Cyber Scheme Team Member (CSTM)
- 2+ years’ penetration testing experience (or equivalent practical experience)
- Eligibility to obtain and maintain UK security clearances
- Familiarity with common tools such as Burp Suite, Nmap, Nessus, Metasploit, etc.
- Understanding of network protocols (TCP/IP, OSI model) and common web application vulnerabilities
At Ultima, you will live and breathe our values of Commitment, Collaboration, Inclusion, Innovation, and Inspiration.
We offer competitive pay alongside a comprehensive benefits package, including:
- 25 days’ holiday (rising to 27) plus bank holidays
- 2 volunteering days and 1 personal day
- Life assurance
- Enhanced parental leave
- Cycle to Work scheme
- And more
Transforming technology into meaningful outcomes.
Ultima is a leading technology and managed services provider, helping organisations realise the full value of their IT investments. With deep expertise across security, cloud, data, and digital workplace solutions, we partner with customers to deliver secure, innovative, and impactful outcomes.
Learn more at www.ultima.com
Ultima is proud to be an equal opportunity employer, committed to building a diverse, inclusive, and equitable workplace where everyone can thrive.
* The salary benchmark is based on the target salaries of market leaders in their relevant sectors. It is intended to serve as a guide to help Premium Members assess open positions and to help in salary negotiations. The salary benchmark is not provided directly by the company, which could be significantly higher or lower.