Senior Network Engineer

Senior Network Engineer

Location: New Jersey, USA
Work Arrangement: Onsite / Hybrid
Employment Type: Contract – W2 Only
Experience: 12+ Years
Candidate Requirement: Local candidates only
Work Authorization: H1B / EAD

Job Summary

We are seeking a highly experienced Senior Network Engineer with 12+ years of hands-on experience in designing, implementing, managing, and troubleshooting complex enterprise network environments. The ideal candidate will have strong expertise in Cisco networking, routing and switching, firewalls, network security, wireless technologies, cloud networking, and network automation.

The candidate should have excellent troubleshooting and communication skills and be comfortable working in an enterprise production environment.

Required Technical Skills

• Cisco Routers & Switches
• Cisco Nexus / Catalyst
• Routing & Switching
  • BGP
  • OSPF
  • EIGRP
  • VLAN
  • STP / RSTP
  • HSRP / VRRP
  • MPLS
• Network Security
  • Cisco ASA / Firepower
  • Palo Alto
  • Fortinet
  • VPN / IPsec
  • SSL VPN
  • Network Access Control
• Wireless Networking
  • Cisco Wireless / Meraki
  • WLAN
  • WLC
  • 802.11 technologies
• Load Balancers
  • F5 BIG-IP / LTM
• Cloud Networking
  • AWS VPC
  • Azure Networking
  • Google Cloud Platform networking is a plus
• Network Monitoring & Troubleshooting
  • SolarWinds
  • Wireshark
  • SNMP
  • Syslog
  • NetFlow
• Network Automation
  • Python
  • Ansible
  • REST APIs
• SD-WAN technologies
• DNS, DHCP, TCP/IP, HTTP/HTTPS
• IPv4 / IPv6
• Linux/Unix networking fundamentals
• Strong knowledge of network security and infrastructure best practices

Key Responsibilities

• Design, implement, configure, and maintain enterprise network infrastructure.
• Configure and troubleshoot Cisco routers, switches, and Nexus platforms.
• Manage routing protocols including BGP, OSPF, and EIGRP.
• Configure and maintain enterprise firewalls, VPNs, and security infrastructure.
• Monitor network performance, availability, and capacity.
• Troubleshoot complex network connectivity and performance issues.
• Manage F5 load balancers and related application traffic.
• Support cloud networking environments across AWS and Azure.
• Implement and maintain SD-WAN and wireless networking solutions.
• Develop network automation scripts using Python and Ansible.
• Participate in network architecture, design, and infrastructure improvement projects.
• Perform network upgrades, migrations, and technology implementations.
• Maintain network documentation, diagrams, configurations, and operational procedures.
• Work with security, systems, cloud, DevOps, and application teams to resolve infrastructure issues.
• Provide technical guidance and mentorship to junior network engineers.
• Participate in incident management and production support activities.

Preferred Qualifications

• Bachelor's degree in Computer Science, Information Technology, or a related field.
• 12+ years of professional network engineering experience.
• CCNP or equivalent networking experience preferred.
• Strong enterprise networking and troubleshooting background.
• Experience working with large-scale production environments.
• Excellent communication, analytical, and problem-solving skills.