Penetration Tester
Penetration Tester
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.
What you'll be doing
Sharpen Your Skills, Strengthen Our Security
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
What we're looking for
- 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
Our values
At Ultima, you will live and breathe our values of Commitment, Collaboration, Inclusion, Innovation, and Inspiration.
Benefits
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
- Company-matched pension
- Life assurance
- Enhanced parental leave
- Cycle to Work scheme
- And more
About Ultima
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
Ultima is proud to be an equal opportunity employer, committed to building a diverse, inclusive, and equitable workplace where everyone can thrive.