Principal Cyber Threat Hunter
Adelphi, MD, United States
- IT
- Full-time
- cyber threat hunting
- cybersecurity
- threat intelligence
The Principal Cyber Threat Hunter at Leidos leads proactive identification, investigation, and mitigation of advanced cyber threats to Department of Defense networks. This role involves leveraging threat intelligence, developing countermeasures, training teams, and collaborating across cybersecurity and IT functions to improve defense capabilities. The position requires extensive cybersecurity expertise, government security clearance, and strong communication skills to brief senior leadership.
Description
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/certifications 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 CISSP 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.
If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares.
Original Posting:
November 19, 2025For 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 $154,050.00 - $278,475.00The 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.
About Leidos
Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit www.Leidos.com.
Pay and Benefits
Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at www.leidos.com/careers/pay-benefits.
Securing Your Data
Beware of fake employment opportunities using Leidos’ name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the Leidos.com automated system – never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhatsApp, Telegram, etc. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com.
If you believe you are the victim of a scam, contact your local law enforcement and report the incident to the U.S. Federal Trade Commission.
Commitment to Non-Discrimination
All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.
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