Principal Network Evaluator

Amentum; Linthicum (MD); On-site; USD 150,000 - 200,000; Full time

Job summary

Amentum in Linthicum, MD is seeking a Principal Network Evaluator to support a Computer Network Defense mission. The role requires strong networking knowledge and hands-on experience identifying vulnerabilities, monitoring security events, and providing actionable recommendations to strengthen enterprise security and mission capabilities.

The ideal candidate will have TS/SCI Poly, experience with network defense, vulnerability assessment, incident response, and SIEM tools such as Splunk and

Qualifications

• Master’s degree plus 9 years of relevant experience, or Bachelor’s degree plus 11 years, or Associate’s degree plus 13 years.
• Active TS/SCI Poly security clearance.
• Experience with computer network defense, vulnerability assessment, incident response, packet analysis, SIEM technologies, and cybersecurity analysis.
• Experience researching system vulnerabilities and developing mitigation strategies.

Responsibilities

• Conduct proactive computer network defense activities by analyzing systems and networks to identify vulnerabilities, detect intrusions, monitor security events, and develop operational courses of action.
• Perform vulnerability assessments using industry-standard tools, analyze routing devices, traffic, and audit logs, and produce reports and recommendations for Government stakeholders.

Skills

Networking knowledge (Cisco/Juniper/Ar

Education

Master’s degree + 9 years

Bachelor’s degree + 11 years

Associate’s degree + 13 years

Tools

Splunk

Elastic

Job description

Purpose and Impact

Amentum is 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.

Essential Responsibilities

• 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.
• 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.

Minimum Requirements

• 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: TS/SCI Poly.
• Minimum years of experience: a Master’s degree plus 9 years, or a Bachelor’s degree plus 11 years, or an Associate’s degree plus 13 years of relevant experience.

Preferred Qualifications

• 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).

Other Responsibilities

• Safety – Amentum enforces a safety culture whereby all employees have the responsibility for continuously developing and maintaining a safe work environment, completing training, and fulfilling emergency response tasks.
• Quality – Provide services that meet customer expectations and comply with Amentum Quality System documents and customer contracts.
• Procedure Compliance – Understand and implement operational, safety, quality, and environmental requirements of all plans, procedures, and policies pertaining to the job.

Compensation

$150,000 – $200,000 per year (estimated based on responsibilities, education, experience, skills, internal equity, market data, and applicable laws).

Benefits Overview

• Health, dental, and vision insurance
• Paid time off and holidays
• Retirement benefits (including 401(k) matching)
• Educational reimbursement
• Parental leave
• Employee stock purchase plan
• Tax‑saving options
• Disability and life insurance
• Pet insurance

Equal Opportunity

Qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, sexual orientation, gender identity, disability, or protected veteran status.