Principal Cyber Threat Hunter

The Leidos Digital Modernization group has a career opportunity for a Principal Cyber Threat Hunter. This position will support a large Department of Defense (DOD) Cyber Security Service Providers (CSSP) and is responsible for proactively identifying, investigating, and mitigating complex cyber threats across our subscribers’ networks. Leveraging a deep knowledge of the threat landscape, the Principal Cyber Threat Hunter will enhance our cybersecurity posture, implement advanced detection strategies and test various hunting hypotheses to identify and neutralize threats to the DODIN.

If this sounds like the kind of environment where you can thrive, keep reading!

Leidos Digital Modernization Sector is focused on Delivering enterprise IT, digital modernization and cyber capabilities to meet critical Air Force, Space Force and Defense Agency operational and mission objectives. 

Are you ready to make an impact? Begin your journey of a flourishing and meaningful career, share your resume with us today!
 
Position Responsibilities:
C5ISR CSSP provides network operations and cyber defense for CSSP subscribers. In this role, you will support a threat team that performs threat hunting, host/network analysis, incident, trend analysis, content development, and detection engineering.
 
Primary Responsibilities:

• Conduct proactive threat hunting across our subscribers’ networks, identifying and investigating potential threats before they can cause damage or disruption.

• Leverage new and existing cybersecurity tools and methodologies to detect, analyze, and mitigate cyber threats, integrating threat intelligence into sensing infrastructure. 

• Identify threat actor tactics, techniques and procedures and develop countermeasures (such as custom signatures and correlation logic) to detect and/or mitigate adversary activity.

• Collaborate with internal and external stakeholders, including IT, network, and security teams, to improve the overall cybersecurity posture of subscriber systems.

• Keep abreast of the latest cybersecurity threats, trends, and technologies, providing recommendations to improve threat detection and response capabilities.

• Develop and deliver cybersecurity training for the threat hunting team, network defense team, and other relevant staff to increase their understanding and response capabilities.

• As a senior member of the team, serve as a mentor, promoting professional growth and a culture of continuous learning and improvement.

• Oversee the creation of detailed reports on findings and remediation actions, communicating effectively with senior management and relevant stakeholders.

• Participate in incident response operations as an expert when high severity incidents occur, recommending remediation actions based on the analysis of the threat.

 
Required Qualifications:

• Master's Degree and 15+ years of applicable Cybersecurity experience, additional Degree's will be considered in lieu of years of experience. 

• Experience working for or with a US government cybersecurity service provider.

• 8+ years of analysis, threat hunting and/or purple/blue-team experience.

• 8570 IAT I & IAM II (e.g. Security+), and CSSP Analyst certification (e.g. CEH, GCIH, etc.).

• Must possess an active TS/SCI security clearance. 

• 5+ years of analysis, threat hunting and/or purple/blue-team experience.

• Excellent written, verbal, and interpersonal communication skills with the ability to brief senior leadership (SES & Flag-officer) leadership on cyber threat activity and cybersecurity trends (as-needed).

Preferred Qualifications:

• PhD in Cybersecurity or related field. 

Original Posting:

July 17, 2025

For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.

Pay Range:

Pay Range $148,850.00 - $269,075.00

The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.