Administrator - Networks

We create possibilities that move life and commerce forward Welcome to Manhattan. Every day, our supply chain commerce technology connects two billion people to 20 billion consumer choices. In the warehouse, on the road and in the store, we make what was once impossible, possible. If you want to tackle complex problems and redefine markets, you’ve come to the right place. Network Security Engineer II Position Summary The Network Security Engineer II is responsible for supporting, maintaining, and improving the security of Manhattan’s on-premises and cloud environments. This role focuses on operational security engineering, network security administration, incident response, access control, certificate and secret management, and continuous risk reduction. This position operates within a Tier 2 security engineering model and supports a broad range of security services, including VPN services, firewall policy administration, certificate-related activities, Cisco ISE, and security incidents managed through ServiceNow.

Monitor, investigate, and respond to security events, alerts, and operational incidents, and support remediation efforts in alignment with established service level agreements. Support and troubleshoot network security services, including remote access VPN, site-to-site VPN tunnels, firewall policy changes, URL filtering or allowlisting requests, and access control workflows. Configure, maintain, and troubleshoot Cisco security technologies, including Cisco ISE, firewalls, IDS/IPS, VPN, and related tools used to secure enterprise connectivity and user or device access. Assist with reviewing infrastructure and application changes for security risk, help identify corrective actions, and help maintain secure configurations across on-premises and cloud platforms. Support certificate, secret, and identity-integrated security processes across enterprise platforms, including cross-functional controls. Create and maintain accurate technical documentation, incident records, implementation notes, and operational handoff details within but not limited to ServiceNow and related support processes. Collaborate with Tier 1 and Tier 3 security teams, infrastructure teams, directory services, cloud teams, and application teams to resolve issues and implement secure solutions. Participate in continuous improvement efforts to strengthen operational efficiency, standardization, and security posture across supported services. Typical Technology Exposure Cisco ASA and Cisco Firepower Threat Defense (FTD) firewall administration and policy management Remote access VPN and site-to-site IPsec VPN configuration and troubleshooting Cisco Identity Services Engine (ISE) Cisco Umbrella / Secure Access Splunk or similar SIEM platforms Cisco Secure Cloud Analytics (XDR) Cloud network security in Azure Certificate and client secret lifecycle support ServiceNow-based incident, request, and escalation handling Required Qualifications 3 to 4 years of hands-on experience in network security engineering, network security operations, or a closely related cybersecurity role At least 1 year of experience with cloud security, cloud networking, or cloud platform security concepts Strong understanding of TCP/IP, subnetting, routing, switching, and core network security principles Hands-on troubleshooting experience with IPsec VPN and remote access VPN technologies Good understanding of encryption concepts, certificate lifecycle management, authentication flows, and secure access principles Experience working with Cisco security technologies such as ISE, firewalls, IDS/IPS, and VPN Familiarity with cloud-integrated security operations and hybrid enterprise environments Ability to troubleshoot security issues with guidance as needed and coordinate resolution across multiple teams Preferred Qualifications Experience with network or security automation Experience working in an enterprise operational environment with formal incident,