Senior Threat Detection Engineer - Purple Team Leader

Koitecc Solutions; Annapolis (MD); On-site; USD 107,000 - 284,000; Full time

Job summary

CVS Health is seeking a Staff Threat Detection Engineer to stay ahead of evolving cyber threats. The role blends threat hunting, detection engineering and offensive security to identify suspicious activity and strengthen our security posture across the enterprise.

You will collaborate with Security Operations and Incident Response to develop detections, support investigations, and validate controls through purple team exercises and adversary emulation.

Qualifications

• 7+ years of experience in threat detection, hunting, penetration testing, and/or offensive security.
• 5+ years of experience in Microsoft Security tools (Defender for Endpoint, Sentinel), CrowdStrike, and Splunk.
• 3+ years of experience with KQL, SPL, Python, PowerShell, or Bash scripting for automation and detection logic.

Responsibilities

• Develop, deploy, and optimize detection rules across SIEM platforms such as Microsoft Sentinel and Splunk.
• Conduct threat hunting activities using Microsoft Defender, CrowdStrike, and other SOC tools to identify and respond to advanced threats.
• Leverage KQL and SPL to create custom detections and automate responses.
• Continuously refine detection capabilities based on emerging threats and intelligence.
• Assist with internal and external penetration tests to identify vulnerabilities.
• Design and execute adversary emulation scenarios to assess detection and response effectiveness.
• Produce detailed reports with findings and actionable recommendations.
• Work closely with blue teams to conduct purple team exercises, bridging offensive and defensive security efforts.
• Provide actionable insights to improve monitoring, alerting, and incident response based on adversary tactics.
• Integrate threat intelligence into detection strategies to prioritize threats and adapt detection rules.
• Collaborate with the incident response team during investigations by providing adversary tactics insights.

Skills

Threat detection

Threat hunting

Penetration testing

Automation scripting

Education

Bachelor's degree or equivalent experience

Tools

Microsoft Defender for Endpoint

Microsoft Sentinel

CrowdStrike

Splunk

Job description

CVS Health is seeking a Staff Threat Detection Engineer to stay ahead of evolving cyber threats. The role blends threat hunting, detection engineering and offensive security to identify suspicious activity and strengthen our security posture across the enterprise.

You will collaborate with Security Operations and Incident Response to develop detections, support investigations, and validate controls through purple team exercises and adversary emulation.