Senior Network Security Engineer

Mbi Llc; Mechanicsville (VA); Hybrid; USD 110,000 - 140,000; Full time

Job summary

VDOT is seeking an experienced Sr Network Security Engineer to implement and support the agency’s IT network, cloud, and computing infrastructure, including Azure networking, Palo Alto firewalls, and WAF technologies.

The Sr NSE will lead security operations, perform threat hunting, vulnerability management, and incident response; collaborate with Infrastructure, Cloud Engineering, and the Information Security Office to ensure confidentiality, integrity, and availability across 300+ locations.

Qualifications

• Experience in designing and implementing secure, hybrid network architectures.
• Experience leading investigations and containment of security incidents.
• Ability to communicate technical issues to technical and executive audiences and mentor junior engineers.
• Experience with regulatory environments and outage troubleshooting.

Responsibilities

• Ensures network security architecture aligns with operational security standards prior to 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; leads implementation and management of agency WAFs.
• Identify and diagnose system problems and threats using logs, SIEM, and diagnostic tools.
• Identify, prioritize, and remediate network security vulnerabilities.
• Provide documentation, topology diagrams, IP schemes, firewall rules, and access controls when required.
• Work independently on assigned projects.

Skills

Network security engineering

Incident response

Threat hunting

WAF/NGFW

300+ devices

SIEM (Splunk/Microsoft Sentinel)

Vulnerability management

AD/CA/Certificates

NIST/CIS/Zero Trust

Cisco ISE/NAC/802.1X/RADIUS/TACACS

Palo Alto / F5 / Azure WAF

Tools

Palo Alto

F5 BIG-IP

Azure WAF

Cisco VPN / GlobalProtect

Job description

- VDOT 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 VDOTs infrastructure.

- The Sr NSE performs day-to-day activities related to securing, documenting, performing research, analysis, design, and implementation of VDOT’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, 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 VDOT’s 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.

Fill the skill matrix below:

Skill

Amount

Candidate's No. of years of experience

Required

8

Required

5

Required

3

WAF/NGFW

Required

3

Supporting environments with 300+ Network Devices

3

Candidate must have experience in the following areas: Incident response, Security investigations, Log analysis, Threat intelligence, Security monitor

Required

Candidate must have experience with the SIEM products (e.g. Splunk, Microsoft Sentinel)

Required

Candidate must have experience in vulnerability management and remediation tracking as well as vulnerability scanning tools (e.g. Nessus, Tenable, Def

Required

Candidate must have experience with the following areas: Active Directory, MFA, Conditional Access, Certificates

Required

Candidate must have experience with; SEC530, CIS Benchmarks, NIST CSF, NIST 800-53, Zero Trust principles

Required

Candidate must have experience with the following: Cisco ISE, NAC, 802.1X, RADIUS, TACACS

Required

Candidate must have experience with the following products: Palo Alto, F5 Distributed Cloud, Azure WAF, Cisco VPN, Global Protect, F5 BIG-IP

Required

Candidate must have experience working in highly regulated environments and leading technical troubleshooting during outages

Required

Candidate must have ability to communicate technical issues to technical and executive audiences and an ability to mentor junior engineers.

Required

Candidate should have achieved or ability to achieve the following certifications: Azure Security Engineer (AZ-500), Azure Network Engineer (AZ-700),

Required