Senior Network Engineer (Core Routing, Switching & Security)
Job Summary
The Senior Network Engineer leads the design, management, and security of enterprise network infrastructure, with a strong focus on Cisco routing/switching and FortiGate firewall configurations. The ideal candidate will play a pivotal role in ensuring robust, secure, and high-performance network services across the enterprise.
Key Responsibilities
- Design, configure, and manage enterprise routing and switching environments using Cisco Catalyst/Nexus platforms.
- Maintain and optimize L2/L3 architectures, including VLANs, STP, OSPF, EIGRP, BGP, and multicast.
- Monitor network performance and proactively resolve capacity or stability issues.
- Administer FortiGate NGFWs, including policies, NAT, IPSec/SSL VPNs, and UTM features.
- Investigate and troubleshoot security anomalies, reviewing logs and enforcing compliance with security standards.
- Design, deploy, and maintain Cisco WLAN environments (WLCs, access points, controllers).
- Optimize wireless performance across enterprise locations for coverage, bandwidth, and reliability.
- Serve as the Level 2 escalation point for complex network incidents.
- Diagnose and resolve issues across all network layers, while guiding Level 1 teams and improving troubleshooting processes.
- Maintain accurate network documentation, including architectures, configurations, and change records.
- Contribute to network upgrades, migrations, and new infrastructure deployments.
- Assess emerging technologies to enhance network performance, security, and scalability.
Required Skills & Qualifications
- Bachelor’s degree in Computer Science, IT, or a related field (or equivalent experience).
- 5+ years of experience in enterprise network engineering, supporting large-scale or mission-critical environments.
- Strong hands-on expertise in: Cisco routing and switching (CCNP/CCIE preferred), Fortinet FortiGate configuration and administration and Cisco wireless technologies, including WLCs and APs
- Proficiency with network monitoring and diagnostic tools such as SolarWinds, PRTG, or Wireshark.
- Solid understanding of core network protocols and technologies (TCP/IP, DNS, DHCP, NAT, ACLs, and VPNs.)
- Experience serving as a Level 2 escalation point, resolving complex network and connectivity issues.
Preferred Skills
- CCNP/CCIE
- Fortinet NSE4+
- Experience with Python/Ansible automation
- Familiarity with Zero Trust Networks, NAC, and cloud network security is a plus
Soft Skills
- Excellent troubleshooting skills
- Strong communication
- Ability to mentor junior engineers
