Network Engineer

TE21P4 Infrastructure Engineer Our client, the world's largest scientific society, is seeking a highly skilled Senior Network Infrastructure Engineer to manage and optimize on‑premises and cloud network environments. As a member of the Network Team, the incumbent will maintain and enhance network infrastructure within our physical data centers and across cloud platforms. Position Responsibilities Perform ongoing network maintenance, diagnostics, and design for 500+ nodes across multiple locations. Administer switches, routers, firewalls, wireless access controllers, load balancers, and DNS/DHCP. Monitor network performance and troubleshoot network‑related issues. Manage and optimize cloud network architectures (e.g., AWS, Google Cloud) to support business applications and services. Configure and maintain Virtual Private Clouds (VPCs), VPNs, Direct Connect, Transit Gateways, and hybrid cloud connectivity. Work with ACS support staff to provide prompt resolution of staff network problems and requests. Collaborate with Workplace, Windows, Linux, Storage, Database, and Cloud teams. Implement network security best practices, including firewalls, NAC, and segmentation strategies across on‑premises and cloud environments. Work with ISPs to ensure reliable Internet connectivity and performance. Provide services outside of core working hours as required. Position requires being on‑site several days a week and may require minimal travel. Experience Minimum five years of hands‑on experience with Cisco switching, routing (OSPF, BGP), firewall (access‑list, VPN tunnels, remote access), wireless access, and related technologies. Experience with F5 load balancing, Cisco ISE, WAF, and DNS/DHCP is desirable. Proficiency in network monitoring and management tools (e.g., Site24x7, SevOne or equivalent) and cloud‑native monitoring solutions. Experience with AWS Cloud including VPC, EC2, ALB/NLB, Transit Gateway, Routing, Security Groups/NACLs, network firewall, VPN, Direct Connect, CloudFormation, and IAM roles. Skills Excellent troubleshooting and research skills. Strong interpersonal skills. Ability to deploy, configure, and troubleshoot Cisco access‑layer switches. Ability to troubleshoot wired, wireless, VPN, cloud (AWS/GCP), and Internet connectivity. Solid understanding of L1–L4 network layers. Ability to apply logical troubleshooting techniques. Job family: Information Technology #J-18808-Ljbffr Tential Solutions