Cyber Threat Hunter

Description The Leidos Digital Modernization sector is looking for a Cyber Threat Hunte r to support a Defensive Cyber Operations (DCO) team in Washington, DC. This position is expected to become available in Summer 2026. Our team provides mission critical, 24/7 operational support to the customer's mission of protecting federal networked systems and services from cyber threats impacting national security. This hybrid position is primarily on-site, with potential for up to 20% telework. While this position will primarily work during core hours (0600 - 1600), this position will be supporting a team of analysts working 24/7 rotating shifts (days, swings, nights). As such, occasional shift work or weekend work may be required to fill unexpected gaps in coverage.

PRIMARY RESPONSIBILITIES

Hypothesis-Driven Hunting: Develop and execute structured hunt campaigns by forming theories on adversary persistence and lateral movement based on the latest TTPs. Advanced Telemetry Analysis: Query and correlate massive datasets across cloud resources, identity systems, and network infrastructure to identify "low and slow" attacks that evade automated detection. Detection Engineering Pipeline: Partner with detection teams to transform manual hunt discoveries into high-fidelity, automated detection rules (SIEM/EDR). Automated Countermeasure Deployment: Design and maintain automation scripts to scale threat mitigation and isolate compromised assets at machine speed. APT Targeting & Engagement: Utilize theMITRE ATT&CKframework to proactively search for Advanced Persistent Threat (APT) activity, assuming a "breach mentality" to uncover hidden adversaries. Indications & Warnings (I&W) Integration: Analyze internal and external telemetry to identify early triggers and "smoke" that signal an imminent or ongoing compromise. Tactical Reporting & Metrics: Author detailed technical hunt reports summarizing findings, operational gaps, and measurable improvements to the organization's security posture. Situational Awareness: Maintain a deep understanding of the current threat landscape, focusing on how new vulnerabilities or malware variants could be exploited within the customer enterprise.

BASIC QUALIFICATIONS

Bachelor's Degree with 8+ yrs of experience or Master's Degree with 6+ yrs of relevant experience; additional years of experience may be substituted in lieu of degrees. DoD 8570 IAT Level II/III: Must hold an IAT Level II or higher certification (or obtain within 180 days). (e.g., CompTIA Security +, CySA+, GSEC and SSCP) or (CASP+ CE, CCNP Security, CISA, GCED, and GCIH) DoD 8570 CSSP Analyst: Must hold a CSSP Analyst certification (or obtain within 180 days). (e.g., CompTIA CySA+, Cloud+, GIAC Global Information Assurance Certification (GCIA)) DoD 8570 CSSP Infrastructure Support: Must hold a CSSP Infrastructure Support certification (or obtain within 180 days). (e.g., CompTIA CySA+, Cloud+, EC-Council CEH, CND, CHFI, GIAC GICSP, and ISC2 SSCP) Technical Proficiency: Expert knowledge of networking protocols (TCP/IP, DNS, and common security elements like IDS/IPS and next-gen firewalls. Data Analysis: Direct experience analyzing complex packet captures and endpoint logs to reconstruct attack timelines. Security Clearance: Current DoD TS/SCI security clearance and ability to pass additional customer suitability screenings prior to start and maintain throughout employment .

PREFERRED SKILLS

Hunt Methodology:Demonstrated experience planning and executing hunt missions in complex, hybrid-cloud environments. Query Languages:Expert proficiency inSPL(Splunk),KQL(Kusto), orDSL(Elastic) for large-scale data mining. Scripting for Security:Advanced use ofPython,PowerShell, orBashto automate repetitive hunt tasks and data enrichment. Forensic Insight:Previous experience in Digital Forensics or Incident Response (DFIR) to assist in root-cause analysis. Cloud Infrastructure:Familiarity with hunting within AWS, Azure, O365, and containerized workloads. AI-Enhanced Defense:Experience using AI-driven analytics to sift through noise and identify anomalous behavioral patterns. Original Posting: March 12, 2026 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: $107,900.00 - $195,050.00 The Leidos pay range for this job level is a general guideline onlyand 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 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 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 View email address on click.appcast.io. 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. #J-18808-Ljbffr Leidos Inc