Job Title : Senior Cybersecurity Engineer – Offensive & Defensive Security
Location : Deurne (Hybrid – 3 days onsite per week)
Role Overview :
We are seeking a technically proficient and highly motivated Senior Cybersecurity Engineer with a strong focus on both offensive and defensive security operations . This is a hands-on role for an individual who thrives in fast-paced environments, is deeply technical, and enjoys working directly with real-world cyber threats. The ideal candidate has a strong foundation in penetration testing, threat detection, and incident response, and can architect and implement robust security systems from scratch.
Key Responsibilities :
Offensive Security (Red Teaming) :
- Perform advanced penetration testing across infrastructure, networks, applications, and APIs.
- Simulate sophisticated threat actor techniques and advanced persistent threats (APTs).
- Lead ethical hacking initiatives and comprehensive vulnerability assessments.
- Utilize industry-standard frameworks such as OWASP , MITRE ATT&CK , and NIST 800-115 .
Defensive Security (Blue Teaming) :
Operate and optimize SIEM platforms (e.g., Splunk, Microsoft Sentinel, QRadar).Analyze threat intelligence feeds and respond to active security incidents.Conduct root cause analyses and propose actionable mitigation strategies.Engage in threat hunting , malware analysis , and behavior-based detection.Security Engineering & Architecture :
Design and enforce secure software development practices (DevSecOps).Implement and harden network and endpoint defenses including firewalls, IDS / IPS, and Zero Trust models.Develop secure authentication systems and manage encryption protocols.Champion secure CI / CD pipelines and API security across development teams.Standards, Compliance, and Best Practices :
Maintain and apply industry-recognized technical certifications (e.g., OSCP , CEH , CISSP ).Participate in red / blue team simulations and internal security assessments.Provide expert-level guidance on secure coding, DevOps security, and threat prevention strategies.Candidate Profile :
Must-Have Qualifications :
5+ years in cybersecurity roles with a strong focus on red / blue team operations.Proven expertise in penetration testing , ethical hacking, and offensive security.Solid experience with SIEM , EDR , IDS / IPS , malware analysis , and threat detection.Strong understanding of Zero Trust architecture , network security , and endpoint protection.Skilled in scripting languages such as Python , Bash , or PowerShell .Familiarity with OWASP Top 10 , MITRE ATT&CK , NIST , and secure SDLC practices.Dutch SpeakerPreferred Certifications :
OSCP , CEH , GPEN , GWAPT , CISSP , CCSP , SSCP , or similar.Additional credentials from ISACA , SANS , or OWASP are a plus.Nice to Have :
Experience in cloud security (AWS, Azure, or GCP).Knowledge of container security (Docker, Kubernetes).Understanding of ISO 27001 from a technical implementation standpoint (not audit-focused).