Demo

Senior Network Security Engineer

Govan Systems inc
Mechanicsville, VA Contractor
POSTED ON 7/31/2026
AVAILABLE BEFORE 8/29/2026

The Sr NSE will support a hybrid enterprise environment consisting of approximately 300 statewide locations, Palo Alto firewalls, Azure networking, ExpressRoute connectivity, WAF technologies, Splunk SIEM, SD-WAN, and mission-critical public-facing applications. The role partners closely with infrastructure, cloud engineering, and the information security office to maintain the confidentiality, integrity, and availability of network infrastructure.


Key Responsibilities:


• Ensures network security architecture aligns with operational security standards prior to and after deployment.


• Lead investigation and containment of network security incidents.


• Review firewall rule requests and ensure compliance with security standards.


• Design and maintain secure hybrid network architecture across on-premises and Azure environments.


• Monitor security events using SIEM technologies and coordinate incident response activities.


• Perform network security assessments and recommend remediation strategies.


• Develop and maintain network security standards, diagrams, and operational documentation.


• Support penetration testing and remediation efforts.


• Participate in on-call support during critical security incidents.


• Responsible for conducting proactive threat hunting and anomaly detection.


• Validates WAF and firewall placement and integration exposure/connectivity. Also leads implementation, review, and management of agency WAF(s).


• Identifies and diagnoses system problems and threats by using system logs, line monitors, SIEM, diagnostic software, and test equipment.


• Identifies, prioritizes, and remediates network security vulnerabilities.


• Must have the ability to provide documentation, network architecture topology diagrams, IP schemes, firewall rules, and access controls when required.


• Must have the ability to work independently on assigned projects.

Hourly Wage Estimation for Senior Network Security Engineer in Mechanicsville, VA
$52.00 to $64.00
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