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.
Penetration Tester employer: 83zero Limited
Join a dynamic team in Larne, Northern Ireland, where innovation meets collaboration. As a Power Platform & Fabric Solutions Developer, you'll enjoy a supportive work culture that prioritises employee growth and offers flexible working hours. With competitive pay and the opportunity to work on transformative projects, this role is perfect for those looking to make a meaningful impact in the tech landscape.
