Principal Network Evaluator

Purpose and Impact

Amentum is seeking a motivated Principal Network Evaluator 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 (Knowledge, Skills, and Abilities)

• 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 Required

TS/SCI Poly

Minimum Years of Experience

A Master's degree plus 9 years of relevant experience, or a Bachelor's degree plus 11 years of relevant experience, 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.
• Quality - Quality is the foundation for the management of our business and the keystone to our goal of customer satisfaction.
• Procedure Compliance - Each employee must read, understand and implement the general and specific operational, safety, quality and environmental requirements of all plans, procedures and policies pertaining to his/her job.

Compensation Details

$150,000 - $200,000

Benefits Overview

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

Original Posting

Original Posting: 07/15/2026 - Until Filled

Amentum is Proud to be an Equal Opportunity Employer

Amentum is committed to providing equal employment opportunities for all applicants and employees. We do not discriminate on the basis of race, color, religion, sex, national origin, sexual orientation, gender identity, disability, or protected veteran status.