Senior Detection Engineer

Introduction

Are you a cybersecurity expert who thinks like an attacker? At Randstad Digital, we are looking for a Senior Detection Engineer & Threat Hunting Lead to drive our threat detection and hunting programmes. This is a high-ownership, hands-on role where you will design elite detections, lead incident responses, and eventually build a team around you to secure leading organizations.

your responsibilities

• Detection Engineering: Design and maintain SIEM/XDR detection rules with full lifecycle ownership.
• Gap Analysis: Map coverage blind spots against threat actor TTPs (MITRE ATT&CK).
• Incident Response: Lead L2/L3 incident response, containment, and remediation efforts.
• Purple Teaming: Run breach & attack simulations to validate detection coverage.
• Detection-as-Code: Build and manage frameworks using CI/CD pipelines and version control.
• Threat Hunting & Intel: Execute hunting hypotheses and translate threat feeds into actionable alerts.
• Testing & Compliance: Act as the blue team counterpart for red team, TIBER, and DORA testing.
• Community: Represent the company in industry groups (ISACs, CSIRTs).

Your profile

your profile

• Experience: Several years of hands-on experience in Detection Engineering, SOC, or CSIRT roles.
• Tech Stack: Deep knowledge of SIEMs (Sentinel, Splunk, QRadar) and SOAR automation.
• Skills: Expert in attacker TTPs, digital forensics, and incident handling.
• Languages: Trilingual in English, Dutch, and French.
• Leadership: Ready to lead a functional working group or mentor a growing team.

nice to have

• Background in Government, Defense, Banking, or Critical Infrastructure (OT/ICS).
• Python scripting for security automation.
• Certifications: CISSP, CISM, or specialized Threat Hunting/Intel tracks.