Sr Network Security Engineer

Title:
Sr Network Security Engineer

Location:
Mechanicsville, VA(Hybrid)

Duration: 10 Months

Interview Type:
In Person Only

Job Description:

Client is seeking an experienced Sr Network Security Engineer (Sr NSE) to implement and support the agency's IT network, cloud, and computing infrastructure. The Sr NSE performs day-to-day activities related to securing Client's infrastructure.

The Sr NSE performs day-to-day activities related to securing, documenting, performing research, analysis, design, and implementation of Client's network and computing related infrastructure.

The Sr NSE will support a hybrid enterprise environment consisting of approximately 300 statewide locations, Palo Alto firewalls, Azure networking, Express Route 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 Client's network infrastructure.

• 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.

• Enterprise Networking
• Enterprise Security
• Azure Networking
• WAF/NGFW
• Supporting environments with 300+ Network Devices
• Candidate must have experience in the following areas:
  Incident response, Security investigations, Log analysis, Threat intelligence, Security monitor
• Candidate must have experience with the SIEM products (e.g. Splunk, Microsoft Sentinel)
• Candidate must have experience in vulnerability management and remediation tracking as well as vulnerability scanning tools (e.g. Nessus, Tenable, Def
• Candidate must have experience in the following areas:
  Active Directory, MFA, Conditional Access, Certificates
• Candidate must have experience with; SEC
  530, CIS Benchmarks, NIST CSF, NIST 800-53, Zero Trust principles
• Candidate must have experience with the following:
  Cisco Client, NAC, 802.1X, RADIUS, TACACS
• Candidate must have experience with the following products:
  Palo Alto, F5 Distributed Cloud, Azure WAF, Cisco VPN, Global Protect, F5 BIG-IP
• Candidate must have experience working in highly regulated environments and leading technical troubleshooting during outages
• Candidate must have ability to communicate technical issues to technical and executive audiences and an ability to mentor junior engineers.
• Candidate should have achieved or ability to achieve the following certifications:
  Azure Security Engineer (AZ-500), Azure Network Engineer (AZ-700),