Leidos is seeking a Tier 3 Cyber Threat Intelligence Analyst to join our team on a highly visible cyber security single-award IDIQ vehicle that provides Network Operations Security Operations (NOSC) support, cyber analysis, and application development.
Department of Homeland Security (DHS), NOSC Support Services is a US Government program responsible to monitor, detect, analyze, mitigate, and respond to cyber threats and adversarial activity on the DHS Enterprise. DHS NOSC has primary responsibility for monitoring and responding to security events and incidents detected at the Trusted Internet Connection (TIC) and Policy Enforcement Point (PEP) and is responsible for directing and coordinating detection and response activities performed by each Component SOC. Direction and coordination are achieved through a shared DHS incident tracking system and other means of coordination and communication.
The Cyber Threat Intel Analyst will need a strong cyber security background with experience with the following: Identify, track and investigate high priority threat campaigns, malicious actors with the interest, capability and TTPs (Techniques, Tactics and Procedures).
Bring a comprehensive understanding, analyzing and tracking the cyber threat landscape, including identifying and analyzing cyber threats actors, APT TTPs and/or activities to enhance cybersecurity posture of the organization’s IT operating environment.
Basic Qualifications
- The candidate must currently possess a Top Secret/SCI Clearance.
- BS in IT related field and 8-12 years’ experience in an IT field, or MS in IT related field and 8+ years’ experience in an IT Field, with a minimum of 7 years of experience as a Tier III senior cyber security analyst performing intelligence analysis, collection management, and technical analysis.
- Two years of recent experience with host-based and network-based security monitoring solutions and to include security content recommendation or development (host based and network signatures).
- Maintain and drive the development of new reports of Cyber Threat Intelligence analysis to peers, management and customer teams for purposes of situational awareness and making threat intelligence actionable.
- Provide support to the Network Operations Security Center during incident response and threat hunting activities that include cyber threat analysis support, research, recommending relevant remediation and mitigation.
- Conduct trending and correlation of various cyber intelligence sources for the purposes of indicator collection, shifts in TTPs, attribution and establish countermeasures to increase cyber resiliency.
- Host-based and network-based forensics related to the identification of advanced cyber threat activities, intrusion detection, incident response, malware analysis, and security content development (e.g., signatures, rules etc.); and cyber threat intelligence.
- Deep understanding of the cyber "Pyramid of Pain", Cyber Kill Chain, MITRE ATT&CK and the Diamond Model. Analysts should be able to conduct in-depth research into threat actors, tools, infrastructure, and TTPs using these frameworks.
- Ability to correlate and enrich data from intelligence sources with internal logs, alerts, and incident data from Splunk and Analyst1 to drive threat hunting and detection initiatives.
- Strong written and oral communication skills.
Preferred Qualifications
Must have at least one of the following certifications:
- Must have one of the following certifications: CASP+ CE, CCNP-Security, CISA, CISSP (or Associate), GCED, GCIH, CCSP
Additionally preferred certifications held:
- SANS GCTI
- Previous DOD, IC or Law Enforcement Intelligence or Counterintelligence Training/Experience.
- Knowledge of Structured Analytic Technique
- Developing scripts to support cyber threat detection that outputs results in a variety of formats, such as VB scripts, Python, C++, HTML, XML or other types most appropriate for the task.
- Proficient in one more of the following computer languages Python, Bash, Visual Basic or PowerShell to support cyber threat detection or reporting.
- Working familiarity with additional tools such as CrowdStrike Falcon, Tanium, Proofpoint TAP, and Zscaler.
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:September 9, 2026For 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.
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.
Skills Required
- Currently possess a Top Secret/SCI clearance
- Bachelor’s degree in an IT-related field and 8–12 years of IT experience
- Master’s degree in an IT-related field and 8 or more years of IT experience
- At least 7 years of experience as a Tier III senior cybersecurity analyst performing intelligence analysis, collection management, and technical analysis
- At least 2 years of recent experience with host-based and network-based security monitoring solutions, including security content recommendation or development
- At least one certification: CASP+ CE, CCNP-Security, CISA, CISSP or Associate, GCED, GCIH, or CCSP
- SANS GCTI certification
- Previous Department of Defense, Intelligence Community, or law enforcement intelligence or counterintelligence training or experience
- Knowledge of Structured Analytic Technique
- Experience developing scripts for cyber threat detection using languages such as VBScript, Python, C++, HTML, or XML
- Proficiency in Python, Bash, Visual Basic, or PowerShell
- Familiarity with CrowdStrike Falcon, Tanium, Proofpoint TAP, and Zscaler
- Strong written and oral communication skills
Leidos Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Leidos and has not been reviewed or approved by Leidos.
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Healthcare Strength — Healthcare coverage is described as comprehensive, with multiple plan options, low office-visit copays in some plans, and access to mental health and wellness support tools. The availability of HSA/FSA options and employer contributions is positioned as a meaningful part of the total package.
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Retirement Support — Retirement benefits are framed as a strong component of total rewards, highlighted by a 401(k) match and immediate vesting in the standard package. The Employee Stock Purchase Plan is also presented as an additional long-term wealth-building feature.
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Wellbeing & Lifestyle Benefits — Wellbeing and lifestyle supports extend beyond core insurance, including wellness programs, fitness-related stipends, and assistance resources. Work flexibility and related perks are also included as part of the broader rewards experience.
Leidos Insights
What We Do
We Are Leidos For 50 years we have been tackling some of the biggest problems that face our nation and our world. OUR MISSION Through our culture of innovation and history of performance, we develop deep customer trust built on integrity and create enduring solutions that improve our world. Leidos is a science and technology solutions leader working to address some of the world’s toughest challenges in the defense, intelligence, homeland security, civil, and healthcare markets. The company’s 43,000 employees support vital missions for government and commercial customers. Headquartered in Reston, Va., Leidos reported annual revenues of approximately $11.09 billion for the fiscal year ended January 3, 2020. Leidos was cited for the meaningful work employees perform that is challenging, impactful, and aligned with our customers’ missions as reasons professionals want to work and stay at our company. Leidos has also been named to lists including Forbes’ Best Employers for Diversity, Forbes’ America’s Best Employers for Women, Military Times Best for Vets Employers, and Ethisphere Institute’s World's Most Ethical Companies®. Employees enjoy career enrichment opportunities available through mobility and development and experience rewarding relationships with supportive supervisors and talented colleagues and customers. Employees appreciate our flexible work environment, allowing for and encouraging a true work-life balance. Our professionals are also excited about our Employee Resource Groups, like the newly launched Collaborative Outreach with Remote and Embedded Employees (CORE), which strives to create an environment where every employee, regardless of location, feels fully engaged as a valued employee of Leidos. Your most important work is ahead.









