396 - Principal Network Evaluator

ARSIEM; Linthicum (MD); On-site; USD 177,000 - 198,000; Full time

Job summary

ARSIEM Corporation seeks a Principal Network Evaluator to support a Computer Network Defense mission in Linthicum, MD. The role involves identifying vulnerabilities, investigating cyber threats, and providing actionable recommendations to strengthen enterprise security for government clients.

The position requires a TS/SCI with poly clearance and US citizenship, with salary range of $177,000–$198,000 per year.

Qualifications

• Bachelor's degree plus 11 years of relevant experience, or equivalent.
• Experience with computer network defense, vulnerability assessment, incident response, packet analysis.
• Strong networking knowledge and analytical and problem-solving skills.
• Experience researching system vulnerabilities and developing mitigation strategies.
• Practical experience with Splunk and Elastic.

Responsibilities

• Conduct proactive cyber defense by analyzing systems to identify vulnerabilities and mitigate threats.
• Produce reports and recommendations for Government stakeholders.

Skills

Networking knowledge

Analytical and problem-solving skills

Cybersecurity analysis

Vulnerability research

Scripting languages

Education

Bachelor's degree plus 11 years of relevant experience, or equivalent

Tools

Splunk

Elastic

Wireshark

tcpdump

Job description

About ARSIEM Corporation

At ARSIEM Corporation we are committed to fostering a proven and trusted partnership with our government clients. Weprovide support to multiple agencies across the United States Government. ARSIEMhas an experienced workforce of qualified professionals committed to providing the best possible support.

As demand increases, ARSIEM continues to provide reliable and cutting-edge technical solutions at the best value to our clients.That means a career packed with opportunities to grow and the ability to have an impact on every client you work with.

ARSIEM is looking for 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.This position will support one of our government clients in Linthicum, MD.

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 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.

Minimum Qualifications

• Bachelor's degree plus 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.

Preferred Qualifications

• 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).


• Previous Hunt/Blue Team experience.


• Knowledge of Network Defense Integrity (NDI) Methodology

$177,000 - $198,000 a year

The ARSIEM 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) job responsibilities, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other laws.

Benefits:

For an overview of our benefits, please visit our benefits tab.
https://www.arsiem.com/careers/

Original Posting Date:

2026-06-30

Clearance Requirement: This position requires an active TS/SCI with a polygraph. You must be a US Citizen for consideration.

Candidate Referral: Do you know someone who would be GREAT at this role? If you do, ARSIEM has a way for you to earn a bonus through our referral program for persons presenting NEW (not in our resume database) candidates who are successfully placed on one of our projects. The bonus for this position is $5,000, and the referrer is eligible to receive the sum for any applicant we can place within 12 months of referral. The bonus is paid after the referred employee reaches six months of employment.

ARSIEM is proud to be an Equal Opportunity and Affymetric Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or veteran status, age, or any other federally protected class.