Senior Penetration Tester

Senior Penetration Tester

You’ll deliver web application, internal and external assessments, mentor junior and mid-level testers, and get involved in phases of larger red team engagements. It’s a senior testing role inside a managed IT and Cyber Security provider, with a team that runs everything from web and API testing through to mature red team work.

• Salary: £55,000 to £65,000
• Location: Remote (UK), with optional office access in central London
• Level: Senior, with a clear route to progress internally

What you’ll do

• Deliver web application, internal and external infrastructure tests using OWASP and MITRE ATT&CK
• Pair with junior and mid-level testers and guide them through their assessments
• Present findings in client debriefs and keep clients informed throughout testing
• Join client meetings on your specialist areas
• Support specific phases of red team engagements (no solo red team or assumed breach work)

What you’ll need

Essential:

• Commercial experience delivering web, internal and external tests
• Strong internal testing skills (BloodHound, Rubeus, Snaffler, Responder or similar)
• Web testing with Burp Suite and supporting tools
• Ability to read code, spot vulnerabilities and write scripts or tooling
• Confidence presenting findings to clients and explaining them clearly

Nice to have:

• Interest in OPSEC-safe methods and moving towards red team work
• Phishing experience (GoPhish, Evilginx)
• Advanced or niche certifications, or working towards them
• Experience mentoring other testers

What’s in it for you

Support towards advanced certifications, training on an in-house platform, and a clear path to progress beyond the role. Fully remote, with the office there if you want it.

LT Harper is handling this search on our client’s behalf. If you’re interested, apply directly on this advert. If you have any questions, or would like to refer someone, please reach out to me!