Cyber Vulnerability Analyst

00100 LEIDOS, INC.; Suitland (MD); On-site; USD 87,000 - 157,000; Full time

Job summary

Leidos seeks a Cyber Vulnerability Analyst to join a mission-focused team in Suitland, MD, defending TS/SCI networks. You will monitor and analyze cybersecurity alerts, perform vulnerability assessments, and support threat hunting and incident response across DISA/NAVSEA tools.

The role requires 4+ years of relevant experience, active TS/SCI clearance, and hands-on knowledge of ACAS, eMASS, SIEM, and NIDS/NIPS technologies. You will contribute to RMF assessments and security briefings.

Qualifications

• Bachelor's degree in Cybersecurity or related field with 4+ years of experience (Masters accepted for fewer years).
• Active TS/SCI clearance required.
• Experience with ACAS vulnerability management tool.
• Experience with eMASS GRC tool.
• Experience with SIEM systems (Splunk, Elastic).
• Knowledge of NIDS/NIPS and NGFWs (Cisco FirePower, Palo Alto).
• Scripting knowledge (Python, PowerShell).
• Familiarity with penetration testing tools (Kali, Burp Suite, Nmap).
• Experience monitoring and investigating alerts from cybersecurity tools.
• Strong analytical and problem-solving skills.

Responsibilities

• Perform continuous monitoring of DISA and NAVSEA cybersecurity tools and analyze software updates for TS/SCI networks.
• Investigate and perform initial technical analysis of vulnerabilities and events; escalate as needed.
• Conduct RMF NIST SP 800-53 risk assessments of ATO packages for authorization.
• Create, update, and manage incident and event tickets in the ticketing system.
• Conduct proactive threat hunting to identify malicious activity and emerging threats.
• Perform wireless ACAS vulnerability scans of enterprise assets and document findings.
• Correlate vulnerabilities and events across platforms to identify trends and threats.
• Prepare and deliver operational and situational awareness briefings.
• Support annual enterprise STIG compliance cyber defense exercises.

Skills

Vulnerability management

ACAS

eMASS

SIEM Splunk

NIDS / NIPS

Cisco FirePower

Palo Alto NGFW

Tanium

Python scripting

Threat hunting

Incident response

Education

Bachelor's degree in Cybersecurity

Master's degree in related field

Tools

ACAS

eMASS

Splunk

Elastic

Trellix ePO

Microsoft Defender

Kali

Burp Suite

Nmap

Metasploit

Job description

Cyber Vulnerability Analyst

Location: Suitland, MD Clearance: Active TS/SCI

Leidos is seeking a Cyber Vulnerability Analyst to join a mission focused team supporting the Navy's cybersecurity environment in Suitland, MD. In this role, you will serve on the front line of cyber defense, helping protect critical TS/SCI networks by monitoring and investigating cybersecurity alerts, identifying potential threats, and supporting proactive threat hunting activities. You will apply your experience in the Certified Network Defender (CND) discipline and knowledge of IT systems and networks to analyze security events, manage incident tickets, support intelligence gathering and analysis, and communicate findings to key stakeholders.

Primary Responsibilities

• Perform continuous monitoring of DISA and NAVSEA cybersecurity tools and conduct initial analysis of software updates for TS/SCI networks, including JWICS, ATLAS, and other networks for which HGCC is responsible.
• Investigate and perform initial technical analysis of cybersecurity vulnerabilities and events, escalating potential incidents to Tier 2 as appropriate.
• Conduct RMF NIST SP 800-53 risk assessments of ATO packages for authorization or reauthorization.
• Create, update, and manage incident and event tickets within the approved ticketing system.
• Conduct proactive threat hunting activities to identify potential malicious activity and emerging threats.
• Perform wireless ACAS vulnerability scans of enterprise assets and document and report findings.
• Correlate discovered vulnerabilities and security events across multiple platforms to identify patterns, trends, and potential threats.
• Prepare and deliver operational and situational awareness briefings.
• Support annual enterprise STIG compliance cyber defense exercises.

Required Qualifications

• Bachelor's degree in Cybersecurity, Information Technology, Information Assurance, or a related area of study desired, with 4+ years of experience or a Master’s degree with 2+ years of experience. Additional experience may be considered in lieu of a degree.
• Active TS/SCI security clearance in DISS and ability to obtain special program access.
• Experience with Vulnerability Management tool Assured Compliance Assessment Solution (ACAS).
• Experience with Governance, Risk, and Compliance (GRC) tool Enterprise Mission Assurance Support Service (eMASS).
• Experience in the CND discipline.
• Professional experience monitoring and investigating alerts from cybersecurity tools.
• Experience with Security Information and Event Management (SIEM) systems such as Splunk and Elastic.
• Experience with Network Intrusion Detection/Prevention Systems (NIDPS), such as Cisco FirePower and Palo Alto NGFW, as well as host based tools such as Trellix ePO, Microsoft Defender, and Tanium.
• Knowledge of scripting and coding languages such as Python, Perl, Ruby, JavaScript, PowerShell, C, C++, and Java.
• Knowledge of penetration testing and red team tactics, techniques, and procedures, as well as tools such as Kali, SamuraiWTF, Nmap, Burp Suite, sqlmap, and Metasploit.
• Knowledge of ticketing systems, report writing, and intelligence gathering, analysis, and dissemination techniques specific to cybersecurity.
• Strong analytical, conceptual, and problem solving skills.

Required Certifications

• Must possess one of the following active certifications: CompTIA Security+, CompTIA CySA+, CompTIA PenTest+, CompTIA Cloud+, CEH, FITSP-O, GIAC GMON, GIAC GRID, GIAC GCIA, GIAC GCIH, GIAC GICSP, GIAC GCED, GIAC GDSA, GIAC GSEC, CFR, or Cisco CyberOps.
• DABAOPP1 NITESONI

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 11, 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: Pay Range $87,100.00 - $157,450.00 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.

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 $17.2 billion for the fiscal year ended January 2, 2026. For more information, visit www.Leidos.com.

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 here.

Securing Your Data Leidos will never ask you to provide payment-related information at any part of the employment application process. And Leidos will communicate with you only through emails that are sent from a Leidos.com email address. If you receive an email purporting to be from Leidos that asks for payment-related information or any other personal information, please report the email to [e-mail].

Commitment and Diversity 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.