Red Team Penetration Tester

TN United Kingdom; United Kingdom; Remote; GBP 70,000 - 81,000; Full time

Job summary

A leading company in cybersecurity is seeking a Red Team Penetration Tester to lead operations in simulating adversaries against critical UK infrastructures. This remote role offers the chance to develop tooling and mentoring opportunities while traveling to client sites as needed. If you have relevant experience and thrive in high-stakes environments, we encourage you to apply.

Qualifications

• 2+ years in red team or adversary simulation.
• Strong experience with infrastructure testing and AD exploitation.
• Skilled in phishing, payload obfuscation, and staging techniques.

Responsibilities

• Deliver full-scope red team operations including initial access and domain compromise.
• Build and manage red team infrastructure and develop offensive tooling.
• Mentor junior operators and support internal training lab setup.

Skills

C2 frameworks (Cobalt Strike, Mythic, Brute Ratel, Sliver)

PowerShell

Python

C#

OPSEC awareness

Documentation and reporting

Job description

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Red Team Penetration Tester - Up to £70,000 (Permanent, Remote with occasional travel to client sites)

We're seeking an experienced Red Team Operator to simulate sophisticated adversaries against some of the UK's most critical infrastructures. This is a hands-on role involving assumed breach, phishing, custom tooling, Active Directory abuse, and advanced detection evasion.

Key Responsibilities:
* Deliver full-scope red team operations - initial access, lateral movement, C2, domain compromise.
* Build and manage red team infrastructure (redirectors, C2, staging servers).
* Develop/customize offensive tooling to evade EDR/AV.
* Run phishing campaigns, payload delivery, and obfuscation strategies.
* Produce high-quality technical and executive reporting.
* Collaborate with purple/blue teams and contribute to internal tool and SOP development.
* Mentor junior operators and support internal training lab setup.

Required Skills & Experience:
* 2+ years in red team or adversary simulation.
* Strong experience with infrastructure testing and AD exploitation.
* Proficient in C2 frameworks (Cobalt Strike, Mythic, Brute Ratel, Sliver).
* Skilled in PowerShell, Python, C#, or similar languages.
* Experience with phishing, payload obfuscation, and staging techniques.
* Knowledge of Active Directory attacks (Kerberoasting, delegation abuse, Golden/Silver tickets).
* Strong OPSEC awareness and covert operation execution.
* Excellent documentation and reporting ability.

Desirable:
* Certifications: OSCP, OSEP, CRTO, CCT INF, CCSAS.
* Cloud exploitation experience (Azure, AWS IAM).
* Phishing frameworks (GoPhish, King Phisher).
* Malware development or binary modification.
* Previous blue/purple team collaboration.

Other Requirements:
* Must have lived in the UK for the past 5 years.
* Must hold or be eligible for SC/DV clearance.
* Full UK driving licence.
* Willingness to travel for UK-based client engagements.

This is a unique opportunity for a Red Teamer to lead impactful operations, develop tooling, and shape advanced offensive capabilities. If you thrive in covert operations and want to make a real difference - apply now.