LFUS) is a diversified industrial technology manufacturing company shaping solutions for the safe and efficient transfer of electrical energy. Headquartered in Chicago, Illinois, USA, we serve customers across industrial, transportation, and electronics markets worldwide. With approximately 16,000 employees we design and manufacture innovative technologies that support electrification, energy efficiency, and advanced automation. Our global reach is matched by a culture that empowers innovation and long-term growth. We are looking for an experienced Senior Network Engineer to join our General Infrastructure team. This role is responsible for designing, implementing, and supporting a global enterprise network across more than 100 international locations. You will partner with Infrastructure, Cloud, Security, OT, and local IT teams to deliver secure, scalable, and highly available networking solutions.
About Your Job: Design, implement, and support global LAN/WAN infrastructure
Deploy and support Palo Alto firewalls, VPNs and network segmentation




Support cloud networking across Microsoft Azure and AWS
Design and troubleshoot hybrid connectivity (VPN, ExpressRoute, cloud gateways)
Support global ISP management, DIA, and SD-WAN connectivity
Work with Cato Networks SASE and/or Palo Alto Prisma Access/Prisma SD-WAN architectures
Lead office deployments, migrations and infrastructure refresh projects
Support OT / Industrial network segmentation where applicable
Produce technical documentation and network diagrams
Mentor junior engineers and participate in technical leadership
Enterprise Networking- Cisco Catalyst- Cisco Nexus- VLANs, STP, EtherChannel- HSRP / VRRP- BGP, OSPF, Static Routing
Security- Palo Alto Firewalls- IPSec VPN- SSL VPN- NAT- ACLs- Network Segmentation- Zero Trust
SASE / SD-WAN- Cato Networks- Palo Alto Prisma Access- Palo Alto Prisma SD-WAN- SD-WAN architecture- Secure Internet Access
Cloud- Microsoft Azure Networking- Azure Virtual WAN- Azure VPN Gatewa

📌 IT Infrastructure Engineer (Aragón)
🏢 Littelfuse
📍 Aragón