Frontline Cyber Defense Analyst - 1st Shift

Leidos; Suitland (MD); On-site; USD 87,000 - 157,000; Full time

Job summary

Leidos is seeking a Cyber Defense Analyst (1st Shift) to join a mission-focused team defending TS/SCI networks at the ONI HGCC in Suitland, MD. You will monitor and investigate cybersecurity alerts, perform initial analysis, and support threat hunting and incident response.

Responsibilities include managing tickets, communicating findings to stakeholders, and assisting with annual cyber defense exercises. The role requires a TS/SCI clearance and 1st shift hours 0730–1530.

Qualifications

• Bachelor's degree in Cybersecurity or related field with 4+ years of experience or Master’s with 2+ years.
• Active TS/SCI clearance.
• Concentrated experience in the 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 (e.g., Cisco FirePower, Palo Alto NGFW, Trellix ePO, Defender, Tanium).
• Knowledge of scripting languages (Python, PowerShell, Java, C, C++, etc.).
• Knowledge of penetration testing tools and red team techniques (Kali, Burp Suite, Metasploit).
• Knowledge of ticketing, reporting, and intelligence dissemination for cybersecurity.
• Strong analytical, problem-solving, and communication skills.

Responsibilities

• Monitor security tools for TS/SCI networks (JWICS, ATLAS, HGCC).
• Investigate alerts, perform initial technical analysis, and escalate as needed.
• Create and manage incident tickets in the ticketing system.
• Conduct proactive threat hunting for malicious activity and emerging threats.
• Perform wireless security scans and report findings.
• Correlate alerts across platforms to identify patterns and threats.
• Prepare and deliver operational and situational awareness briefings.
• Support annual cyber defense exercises.

Skills

Incident response

SIEM monitoring

Threat hunting

Cyber defense

Network security

Education

Bachelor’s in Cybersecurity

Master’s degree with 2+ years

Tools

Splunk

Elastic

Cisco FirePower

Palo Alto NGFW

Trellix ePO

Microsoft Defender

Tanium

Job description

Leidos is seeking a Cyber Defense Analyst (1st Shift) to join a mission-focused team defending TS/SCI networks at the ONI HGCC in Suitland, MD. You will monitor and investigate cybersecurity alerts, perform initial analysis, and support threat hunting and incident response.

Responsibilities include managing tickets, communicating findings to stakeholders, and assisting with annual cyber defense exercises. The role requires a TS/SCI clearance and 1st shift hours 0730–1530.