Sr Network Security Engineer

Accylerate; Mechanicsville (VA); Hybrid; USD 130,000 - 180,000; Full time

Job summary

Accylerate seeks an experienced Sr Network Security Engineer to implement and support the agency's IT network, cloud, and computing infrastructure within a hybrid enterprise environment. The role focuses on securing, documenting, researching, and implementing network security across 300+ locations and various technologies.

The candidate will collaborate with Infrastructure, Cloud Engineering, and the Information Security Office to maintain confidentiality, integrity, and availability of client

Qualifications

• Experience in securing and supporting large-scale network and computing infrastructure.
• Strong knowledge of network security standards and secure hybrid networks across on-premises and cloud environments.
• Experience with SIEMs (Splunk, Microsoft Sentinel) and vulnerability management tools (Nessus, Tenable).
• Ability to communicate technical issues to both technical and executive audiences and mentor junior engineers.

Responsibilities

• Ensure network security architecture aligns with operational security standards before and after deployment.
• Lead investigation and containment of network security incidents.
• Review firewall rule requests for 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.
• Conduct proactive threat hunting and anomaly detection.
• Validate WAF and firewall placement and integration; lead implementation, review, 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, network topology diagrams, IP schemes, firewall rules, and access controls when required.
• Work independently on assigned projects.

Skills

Enterprise Networking

Enterprise Security

Azure Networking

WAF/NGFW

Incident response

Security investigations

Log analysis

Threat intelligence

Security monitor

Active Directory

MFA

Conditional Access

Certificates

NIST CSF

NIST 800-53

Zero Trust

Cisco Client

NAC

802.1X

RADIUS

TACACS

Palo Alto

F5 Distributed Cloud

Azure WAF

Cisco VPN

Global Protect

F5 BIG-IP

Tools

Splunk

Microsoft Sentinel

Nessus

Tenable

Job description

Required Skills & Experience

• Enterprise Networking

Ideal Candidate Profile

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, documenting, performing research, analysis, design, and implementation of client network and computing related infrastructure. Candidate 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 client 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.

Required Skills & Experience

• 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; SEC530, 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)