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Penetration Tester

83Zero LtdEngland🇬🇧United KingdomPosted 20 Oct 2026

Quick Overview

Seniority
Mid Senior
Employment type
Temporary/Casual
Work mode
Remote
Location
England, United Kingdom
GCPAWSOWASPActive DirectoryAzureBashPenetration TestingPowerShellPython

Job Description

Offensive Security Consultant/Penetration Tester

£500 per Day | Inside IR35 | Fully Remote | 12-Month Contract

We are working with a leading global cyber security vendor looking for an experienced Offensive Security Consultant/Penetration Tester to join their Professional Services team on an initial 12-month contract.

This is an excellent opportunity to work on complex enterprise security engagements, delivering penetration testing, adversary simulations and red team exercises for customers across a range of industries.

Key Responsibilities

  • Conduct hands-on penetration testing across enterprise networks, cloud environments (AWS, Azure, GCP), web applications, APIs and mobile platforms.
  • Plan and execute red team and purple team exercises, aligned with frameworks such as MITRE ATT&CK.
  • Identify vulnerabilities, develop proof-of-concept exploits and demonstrate potential security risks.
  • Conduct Active Directory security assessments and exploitation testing.
  • Support phishing simulations, social engineering and other adversary simulation activities.
  • Produce detailed technical reports, communicate findings to customers and recommend remediation strategies.
  • Work directly with enterprise customers and internal Professional Services teams.

Skills & Experience

  • Strong hands-on experience in penetration testing, offensive security or red teaming.
  • Practical experience with tools such as Burp Suite, Metasploit, Cobalt Strike, Nmap, BloodHound and Empire.
  • Scripting experience using Python, PowerShell, Bash or Go.
  • Good understanding of Active Directory, cloud security, container security and web/API vulnerabilities.
  • Knowledge of MITRE ATT&CK and OWASP Top 10.
  • Experience delivering customer-facing security assessments and presenting technical findings.
  • Certifications such as OSCP, OSEP, OSWE, OSCE, GPEN, GWAPT or GPEN-equivalent qualifications would be advantageous.

Contract Details

  • Rate: £500 per day
  • IR35: Inside IR35
  • Duration: Initial 12 months
  • Location: Fully Remote
  • Client: Leading Global Cyber Security Vendor

Interested?

If you're an experienced Penetration Tester or Offensive Security Consultant looking to work with a globally recognised cyber security organisation, we'd love to hear from you.

Apply now or get in touch to discuss the opportunity in more detail.

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