Job Description
Medior / Senior Penetration Tester
Location: Belgium, Brussels
Key Responsibilities
Offensive Security & Penetration Testing
* Perform penetration tests on network, infrastructure, and application environments (external, internal, remote access).
* Conduct targeted attacks and adversarial simulations, including OSINT, spear phishing, and red team techniques.
* Identify vulnerabilities, assess risk levels, and validate real-world exploitability.
* Produce high-quality technical and executive reports with clear, actionable remediation recommendations.
* Provide strategic security guidance tailored to clients’ maturity levels and operational constraints.
Collaboration & Knowledge Sharing
* Mentor and support junior penetration testers, sharing offensive techniques and best practices.
* Contribute to the evolution of ’ offensive security methodologies, tools, and frameworks.
* Collaborate with internal and external cybersecurity stakeholders to clearly communicate findings and improve overall security posture.
Continuous Learning & Research
* Stay up to date with emerging attack vectors, vulnerabilities, and exploitation techniques.
* Participate in internal research, development, and training initiatives to enhance offensive capabilities.
* Contribute to the cybersecurity community through responsible disclosure, research, and knowledge sharing.
Qualifications & Skills
* Minimum 2 years of experience in penetration testing, red teaming, or offensive security.
* Strong understanding of operating systems, networking, and application-layer security.
* Hands-on experience with offensive security tools and frameworks such as:
* Burp Suite, Metasploit, Cobalt Strike, Nmap, netexec, BloodHound
* Solid scripting skills (e.g. Python, Rust, Bash, PowerShell).
* Excellent analytical, problem-solving, and technical reporting skills.
* Ability to communicate complex technical findings clearly to both technical and non-technical audiences.
Certifications (Preferred)
* Offensive Security or GIAC certifications, such as:
* OSCP, OSEP, OSWP, OSCE, OSED, GPEN, or equivalent
* Participation in CTF competitions, FLARE-ON challenges, or SANS training is highly valued.
Languages
* English: Professional working proficiency
* French or Dutch: Full professional or native proficiency
* Proficiency in both French and Dutch is a strong plus