Information Security

Penetration Tester

83zero Limited

London · England · United Kingdom

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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Reference: WJ-799_31327382

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