Senior Network Security Engineer

Network Security EngineerClient 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 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. 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 client network infrastructure.Key ResponsibilitiesEnsures 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.