Careers

Defensive Security Consultant

Brussels, BelgiumFull-time
defensivedetection engineering
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About the Role

We're looking for a Defensive Security Consultant to help clients improve how they detect, investigate, and respond to adversary activity. You'll combine hands-on detection engineering with practical guidance, working alongside Crimson7's offensive and defensive practitioners to make security capabilities more effective in real environments.

Responsibilities

  • Assess client detection and response capabilities, then help define practical improvements
  • Develop and tune detection rules and hunting queries for SIEM and EDR platforms
  • Validate detections against realistic attack simulations and relevant adversary techniques
  • Work with red team operators, SOC teams, and client stakeholders to investigate coverage gaps
  • Support detection-as-code practices and help clients operationalize improvements
  • Explain findings and recommendations clearly to technical teams and decision-makers

Requirements

  • Experience in detection engineering, threat hunting, incident response, or security operations
  • Hands-on experience with at least one SIEM or EDR platform, such as Microsoft Sentinel, Splunk, or Elastic
  • Experience writing or tuning detection logic and investigation queries, such as Sigma, KQL, or SPL
  • Understanding of common attack techniques and the MITRE ATT&CK framework
  • Familiarity with endpoint, identity, network, or cloud telemetry
  • Strong communication skills and a practical, collaborative approach to client work

Nice to Have

  • Experience with detection-as-code or CI/CD workflows for security content
  • Purple team, threat hunting, or incident response experience
  • Scripting skills in Python or PowerShell
  • Experience with cloud security telemetry or identity environments
  • Offensive security background

What We Offer

  • Work across offensive and defensive security engagements
  • Collaborate with red team operators and client security teams
  • Competitive salary and benefits
  • Flexible working arrangements
  • Continuous learning and development opportunities

Ready to join the team?

Send us your details and tell us why Defensive Security Consultant is the right fit for you. We review every application personally.