Description:
Network Support – L3 Support Key Responsibilities Advanced Troubleshooting & Incident Management
- Act as final L3 escalation for complex network issues involving QoS, OSPF, BGP, VLANs, STP, port channels, NAT, ACLs, and VPNs.
- Perform advanced packet and traffic analysis using tools such as Wireshark, FortiAnalyzer, and Syslog.
- Lead P1/P2 incident bridge calls, drive root cause analysis, and ensure timely resolution.
Network Design & Architecture
- Contribute to and review HLD/LLD for new sites, migrations, segmentation initiatives, and firewall architectures.
- Validate designs for scalability, security, and adherence to enterprise standards.
- Recommend improvements across routing, switching, wireless, and security domains.
Firewall & Network Security
- Manage and optimize Fortinet FortiGate environments, including policies, NAT, UTM profiles, VPNs, routing, and HA.
- Audit firewall rules to ensure least-privilege access and compliance.
- Support segmentation, hardening, and compliance initiatives.
Network Optimization & Reliability
- Perform capacity planning, traffic analysis, and performance tuning.
- Monitor network health and proactively address chronic or systemic issues.
- Implement long-term preventive and resiliency measures.
Automation & Tooling
- Develop and maintain automation scripts (Python, Bash, EEM) to streamline operations.
- Automate configuration backups, compliance checks, and monitoring integrations.
Change Management & Migrations
- Lead major network changes, upgrades, firewall migrations, and routing redesigns.
- Prepare RFCs, rollback plans, risk assessments, and post-change reports.
- Coordinate with application, infrastructure, security, and ISP teams.
Vendor & ISP Management
- Work with ISPs and OEMs (Cisco, Fortinet) on escalations, TAC cases, and hardware issues.
- Validate circuit performance and support last-mile troubleshooting.
Documentation & Knowledge Sharing
- Maintain network diagrams, SOPs, configuration standards, and runbooks.
- Improve L1/L2 documentation and operational processes.
Mentorship & Leadership
- Mentor L1/L2 engineers and promote best practices in troubleshooting and operations.
- Contribute to training plans, standards, and continuous improvement initiatives.
Required Technical Skills
- Extensive hands-on experience with Cisco IOS/XE and NX-OS.
- Strong expertise in routing (OSPF, BGP), switching (VLANs, STP, EtherChannel).
- Strong experience with Fortinet FortiGate (FortiOS) and Meraki wireless.
- Experience with SD-WAN, VXLAN, Cisco DNaC and Cisco ISE.
- Solid understanding of network security, VPNs, QoS, and segmentation.
- Experience with NMS/SNMP monitoring, Syslog, and packet capture tools.
- Working knowledge of automation and scripting (Python, Bash, EEM).
Nice to Have
- Aruba Wireless
- Extreme Networks
- Juniper Networks
- Voice and unified communications technologies, including SIP, VoIP call flows, and basic voice troubleshooting (e.g., call quality, latency, jitter, packet loss)
Experience & Certifications
- 10–12 years of networking experience, including 3–4 years in L3 or senior escalation roles.
- CCNA or equivalent hands-on experience (required).
- CCNP Enterprise (strongly preferred).
- Fortinet NSE 4 or higher (preferred).
- ITIL v4 Foundation (optional).
Behavioral Competencies
- Strong analytical and structured troubleshooting approach.
- Excellent communication during high-severity incidents.
- Proactive, detail-oriented, and automation-focused.
- Strong collaboration and mentoring mindset.
- Ability to perform occasional lifting of network equipment (up to 50 lbs), if required.