Job Summary:

Our LOE program provides our customer's Operations organization with the best possible solutions for their mission needs. We achieve this through rapid prototyping, new development, and advanced technology research. From leading-edge visualizations to analytic development, we're always pushing the boundaries to find new and better data sources and tradecraft to answer intelligence questions. With a focus on collaboration and a fast-paced environment, our prototype development program is the ideal place to grow your skills and make a real impact. Click to learn more about how this program “Delivers Mission Success!”

Seeking a motivated Principal Network Evaluator with strong networking knowledge to support an exciting Computer Network Defense mission. The Evaluator will work closely with Government stakeholders to identify network vulnerabilities, investigate cyber threats, conduct network defense operations, and provide actionable recommendations that strengthen enterprise security and mission capabilities.

*Qualified candidates are eligible for enhanced incentives including up to a $25K cash sign on bonus or a paid time off bonus.

Job Responsibilities/Qualifications:

• Mission Focus: Conduct proactive computer network defense activities by analyzing systems and networks to identify vulnerabilities, detect network intrusions, monitor security events, assess attack surfaces, and develop operational courses of action to mitigate cyber threats.
• Technical Proficiency: Perform vulnerability assessments using industry-standard tools and techniques, analyze network routing devices, traffic, and audit logs, conduct packet analysis, research emerging technologies and vulnerabilities, support digital forensics and exploitation analysis, document analytic findings, and produce comprehensive reports and recommendations for Government stakeholders.
• Qualifications: Bachelor's degree plus eleven (11) years of relevant experience, or equivalent. Strong networking knowledge (Cisco, Juniper, & Arista devices and protocols), analytical and problem-solving skills. Experience with computer network defense, vulnerability assessment, incident response, packet analysis, SIEM technologies, and cybersecurity analysis. Experience researching system vulnerabilities and developing mitigation strategies. Practical experience with Splunk and Elastic.
• Security Clearance: Active TS/SCI with Polygraph required to be considered for this role.
• Desirable Skills: Previous Hunt/Blue Team experience. Knowledge of Network Defense Integrity (NDI) Methodology, digital forensics, intrusion detection systems, vulnerability scanning technologies, MITRE ATT&CK, NIST cybersecurity frameworks, and scripting languages. Experience with Wireshark, tcpdump, or similar network analysis and SIEM tools. Relevant cybersecurity certifications (Security+, CySA+, GCIH, GCIA, GCFA, CISSP, or equivalent).

Careers.leidos.com

CONMD

Original Posting:
July 8, 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 $131,300.00 - $237,350.00

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.