Senior Penetration Tester, crawley, west sussex
Client:
Opus Recruitment Solutions
Location:
crawley, west sussex, United Kingdom
Job Category:
Other
-
EU work permit required:
Yes
Job Views:
3
Posted:
24.06.2025
Expiry Date:
08.08.2025
Job Description:
Opus are looking for an experienced Penetration Tester to join our client, a cyber consultancy specialising exclusively in penetration testing and red teaming, delivering high-impact, adversary-simulated engagements for clients ranging from agile tech scale-ups to critical infrastructure providers. As a Senior Penetration Tester, you’ll play a central role in executing and shaping these engagements—across infrastructure, web, cloud, and bespoke environments—while also leading goal-based assessments and full-scale red team operations.
This is a hands-on, client-facing position suited to someone who thrives in technically demanding scenarios and wants to work alongside a small, elite team of offensive security specialists.
Key Responsibilities
* Lead and execute complex penetration tests and adversary simulations
* Deliver red team engagements aligned with frameworks like TIBER, CBEST, and MITRE ATT&CK
* Develop custom tooling and exploits where required
* Create detailed, client-facing technical and executive reports
* Mentor junior testers and contribute to internal R&D
* Stay sharp: engage in continuous learning and threat landscape analysis
About You
* Proven experience in penetration testing and red teaming (internal, external, app, cloud, etc.)
* Strong understanding of attacker TTPs and detection evasion
* Familiarity with frameworks such as OWASP, MITRE ATT&CK, and NIST
* Experience with C2 frameworks (e.g., Cobalt Strike, PoshC2, Sliver)
* Certifications such as OSCP, CRTO, OSEP, or CREST CRT preferred (but not required)
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Created on 24/06/2025 by JR United Kingdom
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