Cyber Defense Analyst (Weekend Day Shift)

Leidos; Suitland (MD); On-site; USD 90,000 - 157,000; Part time

Job summary

Leidos is seeking a part-time Cyber Defense Analyst for weekend day shifts in Suitland, MD, supporting the Navy's cybersecurity environment at HGCC. You will monitor alerts, perform initial analysis, and assist in threat hunting and incident management for TS/SCI networks, including JWICS and ATLAS.

The role requires experience with SIEM tools, NIDPS, scripting, and knowledge of penetration testing techniques.

Qualifications

• Bachelor’s degree in Cybersecurity, IT, or related field with 4+ years of experience or Master’s with 2+ years.
• Active TS/SCI security clearance.
• Concentrated experience in CND discipline.
• Experience monitoring and investigating alerts from cybersecurity tools.
• Experience with SIEM systems such as Splunk and Elastic.
• Experience with NIDPS and host-based tools.
• Knowledge of scripting languages (Python, PowerShell, etc.).
• Knowledge of penetration testing and red team tools.

Responsibilities

• Monitor security tools for TS/SCI networks (JWICS, ATLAS, HGCC)
• Investigate alerts and perform initial technical analysis
• Escalate incidents to Tier 2 as needed
• Create and manage incident tickets
• Conduct proactive threat hunting
• Perform wireless security scans and document findings
• Correlate alerts across platforms to identify trends
• Deliver operational and situational awareness briefings
• Support annual cyber defense exercises

Skills

SIEM analytics

Threat hunting

Incident management

Python/PowerShell scripting

Red/blue team concepts

Security program analysis

Education

Bachelor's degree in Cybersecurity/Information Technology

Master’s degree in related field

Tools

Splunk

Elastic

Cisco FirePower

Palo Alto NGFW

Trellix ePO

Microsoft Defender

Tanium

Job description

Description

Cyber Defense Analyst (Weekend Day Shift)

Location: Suitland, MD

Clearance: Active TS/SCI

Weekend Day Shift Work Hours: 0730 – 1930

Schedule: Part Time, typically 24 hours per week

Leidos is seeking a Part Time Cyber Defense Analyst (Weekend Day Shift) to join a mission focused team supporting the Navy's cybersecurity environment at the Office of Naval Intelligence (ONI) Hopper Global Communications Center (HGCC) 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.

Work Location and Hours: This is a part time, weekend day shift position, typically scheduled for 24 hours per week. Regular work hours are 0730 to 1930 for two 12 hour weekend shifts. Occasional additional or alternate shift coverage may be needed to support team coverage, leave, or other program and staffing needs.

Primary Responsibilities

• Perform first line monitoring of security tools and conduct initial analysis of alerts for TS/SCI networks, including JWICS, ATLAS, and other networks for which HGCC is responsible.
• Monitor organizational cybersecurity tools for alerts, anomalies, and indicators of compromise.
• Investigate and perform initial technical analysis of cybersecurity alerts and events, escalating potential incidents to Tier 2 as appropriate.
• 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 security scans of facilities and document and report findings.
• Correlate alerts and security events across multiple platforms to identify patterns, trends, and potential threats.
• Prepare and deliver operational and situational awareness briefings.
• Support annual 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 Master’s degree with 2+ years of experience. Additional experience may be considered in lieu of a degree.
• Active TS/SCI security clearance.
• Concentrated experience in the CND discipline, regardless of degree.
• 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 certifications or obtain one within 30 days of accepting an offer: CompTIA CySA+, CompTIA PenTest+, CompTIA Cloud+, EC Council CEH, GIAC GCIA, GIAC GCIH, GICSP, or Cisco CyberOps.

Original Posting

September 16, 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 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 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.

• competitive compensation
• Health and Wellness programs
• Income Protection
• Paid Leave
• Retirement

More details are available at www.leidos.com/careers/pay-benefits .

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.

All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or veteran status. Leidos will consider qualified applicants with criminal histories for employment in accordance with relevant Laws. Leidos is an equal opportunity employer/disability/vet.