Littelfuse (NASDAQ: 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. Guided by our principles We Care, We Succeed With Our Customers, and We Own the Outcome, we work collaboratively, think boldly, and deliver solutions that move industries forward.
We are looking for an experienced Senior Network Engineer to join our Global 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
• Manage enterprise routing, switching and wireless environments
• 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
• Maintain Cisco Catalyst, Cisco Nexus and Meraki environments
• Implement 802.1X, Cisco ISE, RADIUS and Zero Trust initiatives
• 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
Required Technical Skills
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
Wireless
- Cisco Wireless
- Meraki Wireless
- 802.1X
- Guest Access
- Roaming optimization
Cloud
- Microsoft Azure Networking
- Azure Virtual WAN
- Azure VPN Gateway
- ExpressRoute
- AWS Networking
Authentication
- Microsoft Entra ID
- Active Directory
- Cisco ISE
- RADIUS
- Certificate-based authentication
Monitoring & Automation
- SolarWinds
- LogicMonitor (preferred)
- ThousandEyes
- Python (preferred)
- PowerShell (preferred)
- REST APIs (preferred)
Preferred Certifications
• CCNP Enterprise
• PCNSE
• Microsoft Certified: Azure Network Engineer Associate
• CCIE Enterprise (preferred, not required)
What Success Looks Like
• Improve global network stability and availability
• Deliver infrastructure modernization projects
• Standardize global network architecture
• Strengthen cloud connectivity and security
• Reduce operational complexity through automation
• Collaborate effectively across Infrastructure, Security and Cloud teams.
About You:
7+ years of experience.
Bachelor's degree in Computer Science, Information Technology, Network Engineering, Telecommunications, or a related field required.
Master's degree preferred.
Equivalent combination of education and relevant experience may be considered.
Strong foundation in enterprise networking, network security, cloud networking, and infrastructure architecture.
Timeime management abilities
Good analytic skills
Excellent troubleshooting skills
High level of verbal and written english communication skills
Highly organized with strong attention to detail
#LI-KRL
At Littelfuse, we support employee growth and development. Guided by our culture principles, our teams work together to deliver value for customers and make a positive impact in the communities where we operate. We are an equal opportunity employer committed to fostering an inclusive workplace where everyone has the opportunity to grow and contribute. We offer competitive compensation and benefits, performance-based incentives, flexible work arrangements, and development opportunities.
Skills Required
- 7+ years of experience
- Bachelor's degree in Computer Science, Information Technology, Network Engineering, Telecommunications, or related field
- Enterprise LAN/WAN design and support including Cisco Catalyst, Cisco Nexus, VLANs, STP, EtherChannel, HSRP/VRRP, BGP, OSPF, Static Routing
- Palo Alto firewalls, IPSec and SSL VPNs, NAT, ACLs, network segmentation, Zero Trust
- SASE and SD-WAN architectures (Cato Networks, Palo Alto Prisma Access, Prisma SD-WAN, SD-WAN design)
- Wireless networking (Cisco Wireless, Meraki Wireless, 802.1X, guest access, roaming optimization)
- Cloud networking (Microsoft Azure Networking, Azure Virtual WAN, Azure VPN Gateway, ExpressRoute, AWS networking)
- Authentication and identity technologies (Microsoft Entra ID, Active Directory, Cisco ISE, RADIUS, certificate-based authentication)
- Monitoring tools: SolarWinds, ThousandEyes
- LogicMonitor
- Python
- PowerShell
- REST APIs for automation
- Strong troubleshooting, analytical, verbal and written communication, time management, and attention to detail
- Preferred certifications: CCNP Enterprise, PCNSE, Microsoft Certified: Azure Network Engineer Associate, CCIE Enterprise (preferred)
Littelfuse Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Littelfuse and has not been reviewed or approved by Littelfuse.
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Retirement Support — A 401(k) plan includes a company match with an additional annual contribution, with plan details also referenced in corporate filings. This structure indicates dependable retirement support across U.S. roles.
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Wellbeing & Lifestyle Benefits — A Lifestyle Spending Account and tuition reimbursement, plus wellness resources and an Employee Assistance Program, expand the package beyond core insurance. Development programs such as Lean Six Sigma certifications reinforce a holistic rewards mix.
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Healthcare Strength — Core medical, dental, and vision coverage are standard and described as solid and workable. Coverage breadth is supported globally with EAP access.
Littelfuse Insights
What We Do
Littelfuse is an industrial technology manufacturing company empowering a sustainable, connected, and safer world. Across more than 15 countries, and with 17,000 global associates, we partner with customers to design and deliver innovative, reliable solutions. Serving over 100,000 end customers, our products are found in a variety of industrial, transportation, and electronics end markets—everywhere, every day. Headquartered in Chicago, Illinois, United States, Littelfuse was founded in 1927. View our broad and deep product portfolio: https://www.littelfuse.com/ Littelfuse has had a long-standing commitment to ensuring a diversified workforce through equal employment opportunities. Maintaining a diversified workforce is critical to the success of our organization. Each associate receives equal employment opportunity regardless of race, color, religion, creed, sex (with or without sexual conduct), marital status, national origin, citizenship, ancestry, age, physical or mental disability, medical condition, order of protection status, military status, sexual orientation, gender expression or identity, genetic information, unfavorable discharge from military service, and any other protected class under federal, state or local law
