Network Security Engineer

Codeworks, an LRS Company, has over 25 years of experience serving Fortune 1000 companies. They are seeking a hands-on Zero Trust Network Operations Engineer to support the operations, monitoring, and lifecycle management of enterprise network security infrastructure across a globally distributed environment.

Responsibilities:

• Operate and support enterprise Zero Trust platforms , including network access control (NAC) and DDI services
• Perform daily monitoring, health checks, and troubleshooting across network security systems
• Maintain availability and enforce security policies across a global network environment
• Manage network access exceptions, MAC address whitelisting, and device compliance
• Support authentication processes including 802.1X, RADIUS, and MAB
• Ensure secure connectivity for corporate, BYOD, and guest networks
• Respond to network access and authentication issues
• Troubleshoot DNS, DHCP, and IPAM-related incidents
• Collaborate with operations centers, service desk teams, and field IT during outages or degradation events
• Analyze and reconcile asset data across systems such as NAC platforms, DDI tools, and CMDBs
• Support classification and lifecycle management of IoT, OT, and unmanaged devices
• Leverage data insights to improve visibility and control across the network
• Implement approved changes including network segmentation, access control rules, and policy updates
• Execute DNS/DHCP updates and IP address management (IPAM) changes
• Follow ITIL-based processes for change, incident, and problem management
• Identify opportunities to automate operational workflows and repetitive tasks
• Contribute to runbooks, standard operating procedures, and knowledge documentation
• Support continuous improvement initiatives across network security operations

Requirements:

• Hands-on experience supporting enterprise network security, NAC, or DDI environments
• Strong understanding of: 802.1X, RADIUS, MAB authentication protocols
• Core networking concepts (TCP/IP, VLANs, routing, switching)
• Experience troubleshooting: DNS, DHCP, and IPAM systems
• Experience working within ITIL-based environments (incident, change, problem management)
• Strong collaboration and problem-solving skills in complex, distributed environments
• Experience with: Forescout (NAC), Infoblox (DDI), or Axonius
• Familiarity with ServiceNow CMDB and workflow automation tools (e.g., PowerApps/Power Automate)
• Exposure to Zero Trust architecture and device classification (IoT/OT environments)
• Basic scripting or automation experience (Python preferred)
• Relevant certifications such as: CCNA, Security+, Forescout certifications (FSCA/FSCP)