Cyber Network Defense Analyst

Leidos is seeking a Cyber Network Defense Analyst (CNDA) to join our team on a highly visible cyber security single-award IDIQ vehicle that provides Network Operations Security Center (NOSC) support, cyber analysis, application development, and a 24x7x365 support staff.

The Network Operations Security Center (NOSC) is a U.S. Government program responsible for monitoring, detecting, analyzing, mitigating, and responding to cyber threats and adversarial activity on the enterprise. The NOSC monitors and responds to security events and incidents detected at the Trusted Internet Connection (TIC) and Policy Enforcement Point (PEP) and coordinates detection and response activities performed by each Component SOC.

The Monitoring and Analysis team provides 24x7 support across 4 different shifts. Candidates must have the ability to work non-core hours if necessary. Duties include network security monitoring and detection, proactively searching for threats, inspecting traffic for anomalies and new malware patterns, investigating and analyzing logs, providing analysis and response to alerts, and documenting activity in NOSC investigations and Security Event Notifications (SENs).

• Manage and conduct hands‑on technical detection, analysis, containment, eradication, and remediation as a member of the Incident Response team
• Guide and mentor peers and subordinates to provide cross training
• Ensure accountability and punctuality of security analysts assigned to your shift
• Capture cybersecurity metrics that support executive‑level briefings (daily, weekly, monthly)
• Articulate daily challenges to the Government Watch Officer (GWO)
• Analyze web and host logs for indications of compromise
• Remediate and coordinate the remediation of infected or compromised devices
• Ensure shift continuity during call‑outs and emergencies
• Compile incident reports, executive summaries, and analysis reports of intrusions and/or security events
• Document and update processes, workflows, and technical guides
• Perform simple firewall rule changes (after training)

• Must have TS/SCI clearance to start. TS clearances candidates will be considered. Preference to candidates with current/active TS/SCI clearance.
• US Citizenship required.

• Bachelor's Degree and 2–4 years of SOC analyst experience. Additional experience may be considered in lieu of a degree.
• Extensive knowledge of a SOC’s/NOSC’s purpose and role within an organization.
• Detailed understanding of common network ports and protocols (e.g. TCP/UDP, HTTP, ICMP, DNS, SMTP, etc).
• Expertise with network topologies and network security device functions (e.g. Firewall, IDS/IPS, Proxy, DNS, etc).
• Expertise with packet analysis tools such as Wireshark.

Sec+, CEH, CySA+ or SANS certs.

$69,550.00 - $.

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

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.