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# Network Engineer

- **Company:** TEKSYSTEMS INC.
- **Location:** Rancho Cucamonga, CA, United States
- **Salary:** $99,840 - $128,960
- **Contract:** Temporary contract
- **Skills:** Border Gateway Protocol, Cisco Routers, Computer Networks, Domain Name System (DNS), OSI Models, Network Security, Network Troubleshooting, Network Configuration and Change Management, Network Installation Services, Network Monitoring, Routing, TCP/IP, Wide Area Networks, Firewalls (Computer Science), Cisco
- **Published:** November 12, 2026
- **Apply:** https://www.careercircle.com/jobs/all/all/usa/ca/rancho-cucamonga/b9186b48-f09f-4a00-a162-ce4c07319345

## About the Role

* Active CCNA certification required.
 * CCNP certification strongly preferred.
 * Strong hands-on experience with:
 + Cisco Routers and Switches
 + Enterprise Network Engineering
 + BGP Routing
 + SD-WAN Technologies
 + Enterprise Firewalls
 + DNS Administration
 + Network Troubleshooting
 * Deep understanding of:
 + TCP/IP
 + OSI Model
 + Routing and Switching Concepts
 + WAN Connectivity, Individual compensation offered for this position within this range will depend on many factors, including qualifications, skills, relevant experience, job knowledge, geographic location, internal equity, and other pertinent job-related factors.

## Description

Financial client is seeking a skilled Network Engineer to support network implementation, administration, and optimization initiatives within a complex enterprise environment. This is a fully onsite opportunity based in Rancho Cucamonga, CA and is ideal for a networking professional with strong Cisco expertise, enterprise firewall experience, and a passion for troubleshooting and improving network performance.

What You'll Do

 * Design, implement, maintain, and troubleshoot enterprise network infrastructure.
 * Configure and support Cisco routing and switching environments.
 * Assist with SD-WAN deployments, optimization, and troubleshooting.
 * Manage and support enterprise firewall technologies, with a preference for Check Point environments.
 * Monitor network performance and proactively identify opportunities for improvement.
 * Troubleshoot complex connectivity issues across LAN, WAN, wireless, and SD-WAN environments.
 * Document network configurations, processes, and technical procedures.
 * Collaborate with infrastructure, security, and systems teams to ensure reliable and secure network operations.
 * Support network upgrades, migrations, and implementation projects.