Offensive Security Consultant

Posted 14 November 2025
Salary Competitive
LocationBrussels
Discipline Cyber Security
Reference75472

Job description

Offensive Security Consultant (Onsite – Brussells)

Contract – Long Term
EU Nationality Required

We are looking for an experienced Offensive Security / Penetration Testing Consultant to join a major client. The mission focuses on advanced penetration testing, red teaming, and strengthening cyber defence capabilities.

Your Responsibilities

  • Execute comprehensive penetration tests on Windows/Linux, on-premise environments, web applications, APIs, and networks.

  • Perform cloud penetration testing across AWS, Azure, and GCP.

  • Conduct red team and adversary emulation exercises using tools such as MITRE Caldera, Atomic Red Team, Metasploit, and Burp Suite.

  • Identify, exploit, and document vulnerabilities with clear remediation guidance.

  • Support SOC and IR teams with offensive expertise, threat hunting input, and attack simulation.

  • Contribute to exploit development, payload creation, and vulnerability research.

Key Technical Skills (Must-Have)

  • Strong penetration testing experience: on-prem, web, APIs, and cloud.

  • Red teaming expertise, including Active Directory attacks and enterprise attack paths.

  • Hands-on with key tools: MITRE Caldera, Atomic Red Team, Metasploit, Burp Suite, C2 frameworks.

  • Cloud security testing on AWS, Azure, GCP.

  • Experience with binary exploitation, fuzzing, reverse engineering.

  • Strong scripting: Python, PowerShell, Bash.

  • Deep understanding of network protocols, encryption, and modern attack techniques.

Requirements

  • EU nationality (mandatory for access).

  • Bachelor’s degree in IT or related field.

  • 6+ years of penetration testing and cybersecurity experience.

  • At least 2 relevant certifications such as OSCP, CRTO, GPEN, GXPN, CCSP.

  • Excellent English communication skills (C1).