Principal Network Evaluator

Leidos; Linthicum (MD); On-site; USD 131,000 - 237,000; Full time

Benefits offered by this job

Sign-on bonus up to $25K

Paid time off bonus

Job summary

Leidos is seeking a Principal Network Evaluator in its Intel Sector to support a Computer Network Defense mission. The role includes identifying vulnerabilities, investigating cyber threats, and delivering actionable recommendations to strengthen enterprise security and mission capabilities.

Qualified candidates will have a TS/SCI with Polygraph clearance and extensive experience in vulnerability assessment, incident response, and network analysis using tools like Splunk and Elastic.

Qualifications

• Bachelor’s degree plus 11 years of relevant experience.
• Experience in network defense, vulnerability assessment, incident response, and cybersecurity analysis.
• Practical experience with Splunk and Elastic.

Responsibilities

• Conduct proactive computer network defense activities and identify vulnerabilities.
• Analyze network traffic, audit logs, and perform packet analysis.
• Document analytic findings and produce reports for Government stakeholders.
• Support digital forensics and mitigation planning.
• Coordinate with Government stakeholders to strengthen enterprise security.

Skills

Network defense

Vulnerability assessment

Incident response

Packet analysis

SIEM technologies

Splunk

Elastic

Cybersecurity analysis

Network protocols

Education

Bachelor's degree plus 11 years of relevant experience

Tools

Splunk

Elastic

Job description

Leidos has a new and exciting opportunity for a Principal Network Evaluator in our Intel Sector. Our talented team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods and Modeling, Signals Intelligence (SIGINT), and Cryptographic Key Management. At Leidos, we offer competitive benefits, including Paid Time Off, 11 paid Holidays, 401K with a 6% company match and immediate vesting, Flexible Schedules, Discounted Stock Purchase Plans, Technical Upskilling, Education and Training Support, Parental Paid Leave, and much more. Join us and make a difference in National Security!

Job Summary

Our 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.

Seeking a motivated Principal Network Evaluator to support an exciting Computer Network Defense mission. Evaluator will work closely with Government stakeholders to identify 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 traffic and audit logs, conduct packet analysis, research emerging technologies and vulnerabilities, support digital forensics and exploitation activities, 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. Experience with computer network defense, vulnerability assessment, incident response, packet analysis, network protocols, SIEM technologies, and cybersecurity analysis. Strong networking knowledge and analytical and problem-solving skills. 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: Experience with Wireshark, tcpdump, or similar network analysis and SIEM tools. Knowledge of digital forensics, intrusion detection systems, vulnerability scanning technologies, MITRE ATT&CK, NIST cybersecurity frameworks, and scripting languages. Relevant cybersecurity certifications (Security+, CySA+, GCIH, GCIA, GCFA, CISSP, or equivalent).

At Leidos, the opportunities are boundless. We challenge our staff with interesting assignments that allow them to thrive professionally and personally. For us, helping you grow your career is good business.

Original Posting

November 9, 2026

Pay Range

Pay Range $131,300.00 - $237,350.00

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. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and 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.