Senior Network Administrator

  • Pennington, NJ
  • Posted 23 days ago | Updated 23 days ago

Overview

Hybrid
Depends on Experience
Contract - Independent
Contract - W2
Contract - 6 Month(s)

Skills

Fortinet
Security+
Cisco Certifications
Cisco
Cisco Catalyst Switches
Firewalls
BGP

Job Details

Job Summary:

We are seeking an experienced Senior Network Administrator with 7+ years of expertise in managing and securing enterprise networks. The ideal candidate will have a strong background in Fortinet Firewalls, Cisco Catalyst Switches, and advanced networking technologies. This role involves designing, configuring, troubleshooting, and maintaining network security and performance in a hybrid work environment.

Key Responsibilities:

  • Design, configure, and maintain network infrastructure, including Fortinet FortiGate Firewalls and Cisco Catalyst Switches.
  • Implement and manage VPNs, VLANs, MPLS, SD-WAN, and WAN optimization.
  • Monitor network performance, ensuring high availability, reliability, and security.
  • Troubleshoot complex network issues related to routing, switching, and firewall policies.
  • Configure and maintain firewall rules, NAT, ACLs, and IPS/IDS policies on Fortinet FortiGate.
  • Perform firmware upgrades, patches, and system maintenance for networking devices.
  • Ensure network security through segmentation, Zero Trust architecture, and access controls.
  • Work with cross-functional teams to support infrastructure projects and network expansions.
  • Document network topology, configurations, and operational procedures.
  • Provide technical mentorship and support to junior network engineers.

Required Skills & Qualifications:

  • 7+ years of experience in enterprise network administration and security.
    Strong hands-on experience with Fortinet FortiGate Firewalls (FortiOS, IPS, SD-WAN).
    Expertise in Cisco Catalyst Switches (VLANs, STP, EtherChannel, QoS, ACLs).
    In-depth knowledge of routing protocols (BGP, OSPF, EIGRP, VRFs).
    Proficiency in VPN configurations (IPsec, SSL) and network segmentation.
    Experience with Wireshark, TCPDump, or other network diagnostic tools.
    Understanding of cloud networking (Azure, AWS, or Google Cloud Platform) is a plus.
    Strong troubleshooting, analytical, and documentation skills.

Certifications (Preferred but Not Mandatory):

  • Fortinet NSE4/NSE5/NSE7
  • Cisco CCNP Enterprise or CCNP Security
  • CompTIA Security+ or CISSP
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