Senior Network Engineer — Enterprise Networking & Security

GCS Recruitment; Fremont (CA); On-site; USD 120,000 - 180,000; Full time

Job summary

GCS Recruitment is seeking an experienced Network Engineer to support and maintain enterprise network infrastructure in Fremont, California. You will manage routing, switching, firewalls, wireless networks, and connectivity solutions across physical and virtual environments.

The ideal candidate brings 5+ years of hands-on networking experience, strong TCP/IP knowledge, and relevant vendor certifications. You will troubleshoot issues, participate in infrastructure projects, and collaborate with

Qualifications

• 5+ years of networking or IT infrastructure experience.
• Strong knowledge of TCP/IP, routing, switching, VLANs, firewalls, and wireless tech.
• Experience with Cisco, RUCKUS, or similar network vendors.
• Familiar with virtualization platforms such as VMware, Hyper-V, or KVM.
• Certifications CCNA/CCNP/Network+ are beneficial.

Responsibilities

• Maintain and troubleshoot enterprise network infrastructure.
• Manage routing, switching, firewalls, and wireless networks.
• Support infrastructure projects and cross-functional teams.
• Ensure network performance, security, and reliability across physical and virtual environments.

Skills

Networking

TCP/IP

Routing

Switching

VLANs

Firewalls

Wireless

Troubleshooting

Documentation

CCNA

CCNP

Network+

Tools

Cisco

Ruckus Wireless

VMware

Hyper-V

KVM

Job description

GCS Recruitment is seeking an experienced Network Engineer to support and maintain enterprise network infrastructure in Fremont, California. You will manage routing, switching, firewalls, wireless networks, and connectivity solutions across physical and virtual environments.

The ideal candidate brings 5+ years of hands-on networking experience, strong TCP/IP knowledge, and relevant vendor certifications. You will troubleshoot issues, participate in infrastructure projects, and collaborate with