Senior Penetration Tester

Opus Recruitment Solutions; United Kingdom; On-site; GBP 60,000 - 80,000; Full time

Job summary

A leading consultancy is seeking a Senior Penetration Tester to execute and shape cyber engagements, focusing on red teaming and penetration testing across various environments. This role involves a hands-on approach with mentorship opportunities, designed for those thriving in technical challenges.

Qualifications

• Proven experience in penetration testing and red teaming.
• Strong understanding of attacker TTPs.
• Familiarity with frameworks like OWASP and MITRE ATT&CK.

Responsibilities

• Lead and execute complex penetration tests.
• Deliver red team engagements aligned with frameworks.
• Create detailed client-facing technical reports.

Skills

Penetration Testing

Red Teaming

Threat Landscape Analysis

Continuous Learning

Education

OSCP, CRTO, OSEP, or CREST CRT

Tools

Cobalt Strike

PoshC2

Sliver

Job description

Opus Recruitment Solutions provided pay range

This range is provided by Opus Recruitment Solutions. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.

Base pay range

Direct message the job poster from Opus Recruitment Solutions

Senior Consultant - Cyber Security - Opus Recruitment Solutions

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)

Seniority level

• Seniority level

  Mid-Senior level

Employment type

• Employment type

  Full-time

Job function

• Industries

  Technology, Information and Media

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