About this role
Essential Roles & Responsibilities
As a Penetration Tester at Claranet, you will able to deliver you own web application tests and through training and partnering, you will be involved in a full range of testing work from mobile app and infrastructure testing to social engineering and Red Team exercises.
Key Responsibilities
- Undertaking web and mobile application testing and infrastructure testing engagements
- Using the opportunities provided by the business to improve skills and capabilities into all areas of testing
- Working with key clients providing bespoke consultancy, analysis and expertise
- Collaborating with other Claranet Business Units on large client digital transformation projects
- Assisting with pre/post sales activities as required
- Encouraging a positive, proactive, collaborative and solution-oriented approach among colleagues
- Communicating within Claranet and with clients, both orally and in writing
- Contribute to the writing and publishing of whitepapers and advisories
- Developing and delivering webinar content
- Delivering targeted research and development in line with direction of the business
- If not achieved already, working towards CREST qualifications; CPSA, CRT and CCT
Essential Technical
- Have a good understanding of web & mobile application and infrastructure testing and methodologies
- Able to manually and proficiently exploit web application and network infrastructure vulnerabilities
- Have a logical and time-conscious approach to report writing
- Have a working knowledge of common programming languages such as C, C++, C#, Java
- Have experience of at least one scripting language such as Ruby, Python or Perl
Essential Experience
- Delivering chargeable web app testing engagements
- Providing remediation advice
- Producing accurate technical reports
- Working under pressure of deadlines and structuring workload accordingly
- Problem-solving, helping others to understand complex ideas
Essential General
- Client facing, able to confidently and professionally represent the company
- Must be self-motivated and able to work in an independent manner as well as part of a team
- Excellent written and oral communications skills
- Positive, collaborative and enthusiastic
- Conducting penetration testing work out of normal office hours on occasion
- Willing to travel to deliver onsite work as required
- Appetite to shadow, train and develop to improve capabilities into all areas of security testing
In Addition, The Following Are Highly Desirable
- Security clearance (or eligibility for clearance)
- CTM or CTL status
- CISSP, CISA, CEH, OSCP or equivalent reputable information security certifications
- Familiarity with testing cloud environments
- Public speaking experience
- Full UK driving license
About cyber security & digital forensics roles for ex-police
Cyber security, digital forensics and incident-response roles. DMIs, cybercrime investigators and digital forensics officers bring evidential discipline and investigative judgement that DFIR and security teams struggle to hire.
See all cyber security & digital forensics jobs in Leeds →Why this fits a police background
- Police experience explicitly valued
What cyber security & digital forensics roles pay ex-police
Advertised UK ranges, editorial estimates reviewed July 2026
| Digital forensics analyst | £32,000–£45,000 |
| DFIR consultant | £45,000–£65,000 |
| Senior forensics / IR specialist | £60,000–£80,000 |
| Threat-intelligence specialist | £55,000–£80,000 |