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).