Principal Network Evaluator

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

Benefits offered by this job

Health insurance

Dental & vision insurance

401(k) matching

Educational reimbursement

Parental leave

Employee stock purchase plan

Disability insurance

Life insurance

Pet insurance

Job summary

Amentum is seeking a Principal Network Evaluator to support a Computer Network Defense mission. You will work with Government stakeholders to identify vulnerabilities, investigate cyber threats, and provide actionable recommendations to strengthen enterprise security and mission capabilities.

Responsibilities include proactive network defense, vulnerability assessments, traffic and log analysis, and producing formal reports with recommended mitigations.

Qualifications

• Strong networking knowledge across Cisco/Juniper/Arista.
• Experience with network defense, vulnerability assessment, incident response, packet analysis, and SIEM.
• Researching vulnerabilities and developing mitigation strategies; practical with Splunk/Elastic.

Responsibilities

• Identify vulnerabilities and intrusions; monitor security events.
• Analyze networks, assess attack surfaces, and develop operational courses of action.
• Perform vulnerability assessments and document analytic findings."
• Produce comprehensive reports and recommendations for Government stakeholders.

Skills

Networking knowledge

Analytical & problem-solving

Cybersecurity analysis

Vulnerability assessment

Incident response

Packet analysis

SIEM technologies

Threat research & mitigation

Splunk

Elastic

Education

Master’s degree + 9 years

Bachelor’s degree + 11 years

Associate’s degree + 13 years

Tools

Splunk

Elastic

Wireshark

tcpdump

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 (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).

This position is not designated as a safety sensitive position.

Compensation Details

$150000-20000

The compensation range or hourly rate listed for this position is provided as a good‑faith estimate of what the company intends to offer for this role at the time this posting was issued. Actual compensation may vary based on factors such as job responsibilities, education, experience, skills, internal equity, market data, applicable collective bargaining agreements, and relevant laws.

Benefits Overview

Our health and welfare benefits are designed to support you and your priorities. Offerings include:

• 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

Note: Benefits may vary based on employment type, location, and applicable agreements. Positions governed by a Collective Bargaining Agreement (CBA), the McNamara‑O'Hara Service Contract Act (SCA), or other employment contracts may include different provisions/benefits.

Original Posting

07/15/2026 - Until Filled

Amentum anticipates this job requisition will remain open for at least three days, with a closing date no earlier than three days after the original posting. This timeline may change based on business needs.

Amentum is proud to be an Equal Opportunity Employer. Our hiring practices provide equal opportunity for employment without regard to race, sex, sexual orientation, pregnancy (including pregnancy, childbirth, breastfeeding, or medical conditions related to pregnancy, childbirth, or breastfeeding), age, ancestry, United States military or veteran status, color, religion, creed, marital or domestic partner status, medical condition, genetic information, national origin, citizenship status, low‑income status, or mental or physical disability so long as the essential functions of the job can be performed with or without reasonable accommodation, or any other protected category under federal, state, or local law. Learn more about your rights under Federal laws and supplemental language at Labor Laws Posters.