Senior Network Engineer, Enterprise LAN/WLAN & NAC (Onsite)

Systal Technology Solutions is seeking an experienced Senior Network Engineer to design, implement, and support enterprise LAN/WLAN and security solutions across customer environments. You will manage Cisco Catalyst/Nexus platforms, deploy Cisco ISE NAC, and lead infrastructure upgrades with a focus on resiliency and high availability.

The role requires hands-on expertise in campus networking, data center technologies, and network security, with strong communication and stakeholder skills.

Design, implement, and support enterprise LAN, WLAN, and network security solutions. Manage and troubleshoot Cisco Catalyst and Cisco Nexus switching platforms. Design, deploy, and administer Cisco ISE environments (NAC, authentication, authorization, segmentation). Deploy, manage, and optimize Cisco Wireless infrastructures. Configure Layer 2/3 networking: VLANs, STP, EtherChannel, HSRP, OSPF, BGP. Lead infrastructure refreshes, transformations, migrations, and upgrades. Produce High-Level and Low-Level Designs and operational docs. Collaborate with Security, Infrastructure, Cloud, and Project teams. Participate in customer meetings and service reviews. Proven experience in enterprise LAN and Wireless environments. Strong expertise with Cisco Catalyst Switching, Cisco Nexus Switching, Cisco ISE, Cisco Wireless Infrastructure. Advanced knowledge of LAN architecture and design, Enterprise campus networking, Routing and switching technologies, network resiliency and high-availability, network segmentation and access control. Strong understanding of routing protocols including OSPF and BGP. Proven experience supporting manufacturing and industrial environments and production facilities. Experience managing network refresh, migration, transformation and deployment projects. Excellent communication and stakeholder management skills. Architectural and solution-design approach to problem solving. Team player with leadership attitude.