Network Evaluator-Principal

NetSage; Maryland; On-site; USD 140,000 - 190,000; Full time

Job summary

NetSage is seeking a Principal Network Evaluator to protect enterprise networks and coordinate with mission stakeholders. You will identify vulnerabilities, investigate cyber threats, and conduct network defense activities to strengthen security across complex environments.

The ideal candidate has strong networking knowledge, experience with SIEM platforms, and a passion for defending critical systems. This is a senior role aligned with national security missions.

Qualifications

• TS/SCI clearance with polygraph is required.
• B.S. in Network Engineering or related field with 11+ years of relevant exp; higher degrees accepted with adjusted years.
• Experience supporting Computer Network Defense (CND) or defensive cyber operations.
• Experience conducting vulnerability assessments and cybersecurity analysis.
• Experience supporting incident response and network security investigations.
• Strong understanding of network protocols, packet analysis, and enterprise networking.
• Experience with SIEM platforms and vulnerability research.
• Experience using Splunk and Elasticsearch/Elastic.

Responsibilities

• Protect enterprise networks and defend against cyber threats.
• Identify vulnerabilities and conduct vulnerability assessments.
• Investigate cyber threats and respond to incidents.
• Provide actionable recommendations to strengthen mission security.

Skills

Security clearance TS/SCI with poly

Strong networking knowledge

Vulnerability assessments

Incident response

Network defense (CND)

Analytical skills

SIEM experience

Threat investigation

Education

B.S. in Network Engineering or related field

Ph.D. in related field

M.S. in related field

A.S. in networking/cyber or equivalent

13+ years military coursework/training in networking or cyber

Tools

Splunk

Elasticsearch/Elastic

SIEM platforms

Wireshark

tcpdump

Job description

At NetSage, we are more than a government contractor—an advanced cyber specialist dedicated to national security. We believe our success begins with our people, which is why we invest in and care for our employees. We know that employee retention is mission continuity, and we are committed to building long-term careers where our people can grow alongside our customers' evolving missions. Our employees enjoy meaningful work, competitive compensation, outstanding benefits, and opportunities to expand their skills across multiple mission areas.

Due to the sensitive nature of the work we support, some job descriptions intentionally provide a high-level overview of the role.

Job Description

We are seeking a Principal Network Evaluator to protect enterprise networks. In this role, you will work closely with mission stakeholders to identify vulnerabilities, investigate cyber threats, conduct network defense activities, and provide actionable recommendations that strengthen mission capabilities and security. The ideal candidate for this role will be a seasoned cybersecurity professional with strong analytical skills, deep networking knowledge, and a passion for defending complex enterprise environments. Please consider applying if you meet the following qualifications.

Required Qualifications

• TS/SCI with polygraph security clearance.
• A Bachelor of Science (B.S.) degree in Network Engineering or a related field and eleven (11) years of relevant experience. Also acceptable are a Doctoral degree (PH.D.) and seven (7) years, a Master of Science (M.S.) degree and nine (9) years, an Associate of Science (A.S.) degree and thirteen (13) years, or at least eighteen (18) semester hours of military coursework/training in networking, computer science, or cyber topics and thirteen (13) years of relevant experience.
• Experience supporting Computer Network Defense (CND) or defensive cyber operations.
• Experience conducting vulnerability assessments and cybersecurity analysis.
• Experience supporting incident response and network security investigations.
• Strong understanding of network protocols, packet analysis, and enterprise networking concepts.
• Experience working with Security Information and Event Management (SIEM) platforms.
• Experience researching system vulnerabilities and developing effective mitigation strategies.
• Practical experience using Splunk and Elasticsearch/Elastic.

Desired Qualifications

• Experience using network analysis tools such as Wireshark, tcpdump, or similar packet capture and traffic analysis tools.
• Knowledge of digital forensics, intrusion detection systems (IDS), and vulnerability scanning technologies.
• Familiarity with the MITRE ATT&CK framework and NIST Cybersecurity Framework (CSF).
• Experience developing automation or analysis scripts using languages such as Python, PowerShell, or Bash.
• Relevant cybersecurity certifications such as CompTIA Security+, CompTIA CySA+, GIAC Certified Incident Handler (GCIH), GIAC Certified Intrusion Analyst (GCIA), GIAC Certified Forensic Analyst (GCFA), Certified Information Systems Security Professional (CISSP), or equivalent certifications.