Senior Network Security/Firewall Detection Engineer

ERG is a research and consulting firm that provides a wide range of support to federal, state, and commercial clients. ERG offers multidisciplinary teams with nationally recognized skills in engineering, science, economics, public health, informational technology, and communications. We hire people with the best minds and then provide them with a vibrant and flexible environment in which to develop their careers. The qualified individual must be highly motivated with the skills to prioritize, perform, and communicate effectively in a fast-paced environment.

ERG is seeking a Senior Network Security / Firewall Detection Engineer to provide advanced network defense, threat detection, and boundary protection capabilities across Navy network environments. This role is responsible for configuring and securing network security appliances, analyzing traffic and alerts, and supporting continuous monitoring activities to ensure mission systems remain resilient against evolving cyber threats.

This is a fulltime onsite position at the Naval Surface Warfare Center (NSWC) Indian Head. Indian Head, MD, is approximately 30 miles from Washington, DC, 25 miles from Alexandria, VA, and 60 miles from Fredericksburg, VA.

Job Description: :
• Configure and manage firewalls, IDS/IPS platforms, and other network security appliances to ensure effective boundary protection

• Analyze network traffic, logs, and security alerts to identify anomalies, potential intrusions, and malicious activity

• Respond to security incidents, conducting investigation, containment, and documentation in coordination with cybersecurity teams

• Support Risk Management Framework (RMF) activities and contribute to continuous monitoring by maintaining security controls and documentation

• Optimize firewall rulesets, detection signatures, and system configurations to enhance network defense capabilities

• Collaborate with cybersecurity, network, and system engineering teams to maintain a strong security posture across Navy environments

• Maintain detailed technical documentation, including configurations, diagrams, and security response procedures

Qualifications and Skills::
Required

• Bachelor’s degree in Cybersecurity, Network Engineering, Information Technology, or related field

• 8+ years of experience in network security engineering, firewall administration, or threat detection

• DoD Security+ certification required (IAT Level II)

• Strong background in configuring firewalls, IDS/IPS, and other network security technologies

• Experience analyzing network traffic, monitoring alerts, and investigating security events

• Knowledge of RMF security controls and continuous monitoring processes

• Excellent analytical, troubleshooting, and communication skills

• Experience managing NIPR/SIPR boundary protection, including Cross Domain Solutions, with familiarity with the Defense Research and Engineering Network (DREN) preferred

• Must currently hold or maintain a Department of Defense T5 investigation/privileged access eligibility (T5 (SSBI) clearance)

• Must be a U.S. citizen as this position is not eligible for Limited Access Authorizations

Preferred

• Experience supporting U.S. Navy or DoD enterprise networks

• Familiarity with tools such as ACAS, Splunk, Snort/Suricata, Cisco ASA/Firepower, Fortinet, or Palo Alto platforms

• Knowledge of DoD cybersecurity policies, network hardening techniques, and advanced threat detection methods

ERG offers competitive salaries and excellent benefits, including health and dental insurance, life insurance, long-term disability, educational benefits, FSAs, a generous 401k plan, profit sharing, an EAP, 11-20 paid vacation days per year, 10 paid holidays per year, 56 hours or more of sick leave (based on the state you work in) per year (pro-rated for part-time) and more. The salary range for all positions depends on the years and type of experience.

ERG is an equal opportunity employer and complies with all applicable EEOC regulations. All qualified applicants will receive consideration for employment without regard to age, race, color, religion, sex, sexual preference, national origin, disability, or status as a protected veteran.

Please be aware, the only authentic corporate domain for ERG is https://www.erg.com. ERG may, on occasion, screen applicants via telephone or video interviews via Skype, Teams, GoToMeeting, or another type of video platform. However, any candidate extended a job offer might be asked to meet in person with an ERG employee before providing confidential personal information associated with new employment.

If you’re a qualified individual with a disability or a disabled veteran, you have the right to request a reasonable accommodation if you are unable or limited in your ability to use or access ERG’s online application process as a result of your disability. To request accommodation, please contact Human Resources via email at [email protected] or call (781) 674-7293.

ERG fosters a friendly, flexible work environment. ERGers are dedicated to serving clients who are committed to making the world a better place. We promote and recognize principles of fairness and respect in the work we do, the partnerships we foster, and the culture we value both within and outside of our organization.