Muzzamil Ali Khan

About Muzzamil Ali Khan

Network Engineer with 11+ years of experience designing, implementing, and optimizing enterprise network infrastructures across data centers, hybrid environments, and multi-cloud platforms. I specialize in building secure, scalable, and highly available network architectures that support business-critical applications and large enterprise environments.My expertise includes Cisco enterprise networking technologies such as Catalyst 9300/9500/9800 and Cisco Nexus delivering high-performance Layer 2 and Layer 3 network designs. I have strong hands-on experience with routing protocols including BGP, OSPF, EIGRP, and IS-IS, along with route redistribution, policy-based routing, and high-availability technologies like HSRP, VRRP, EtherChannel, and BFD to ensure reliable and resilient network operations.I have extensive experience implementing network security and firewall solutions using Fortinet and Palo Alto platforms, including FortiGate, FortiManager, FortiAnalyzer, and Palo Alto Next-Generation Firewalls. My work includes deploying SD-WAN architectures, IPsec VPNs, high-availability clusters, and advanced security features such as application control, user identification, threat prevention, and secure remote access. I have also supported firewall migrations from Cisco ASA to FortiGate, ensuring seamless policy and VPN transitions with minimal service disruption.In addition, I have strong expertise in hybrid and multi-cloud networking, integrating enterprise networks with AWS and Microsoft Azure using Direct Connect, ExpressRoute, and site-to-site VPNs with BGP-based failover for high availability.I also focus on network automation and monitoring, using tools like Python, Ansible, SolarWinds, PRTG, SNMP, NetFlow, and Grafana to improve operational efficiency and network visibility. I enjoy collaborating with security, DevOps, and infrastructure teams to deliver reliable and scalable network solutions aligned with business and compliance requirements.I am passionate about building secure, high-performance networks, improving operational processes, and continuously learning new technologies to support modern enterprise and cloud-driven infrastructures.

Experience

1. Senior Network Engineer

   Cigna Healthcare

   Jul 2024 — Present · Bloomington, MN, US

   Architected resilient networks using Cisco Catalyst 9300/9500 and Nexus 9K across core, distribution, and access layers.Built secure hybrid connectivity to AWS and Azure using IPSec VPNs, BGP, and Direct Connect/ExpressRoute.Deployed Fortinet SD-WAN with dual WAN redundancy and intelligent traffic steering for 500+ branch sites.Configured FortiGate UTM features including IPS, antivirus, SSL inspection, and application control for enhanced security.Automated configurations, audits, and health checks using Python and Ansible across thousands of devices.Implemented Cisco ISE with 802.1X for dynamic VLAN assignment and endpoint compliance enforcement.Designed QoS policies prioritizing EHR, VoIP, and video traffic using DSCP tagging and hierarchical queuing.Implemented monitoring with SolarWinds, PRTG, and NetFlow for performance visibility and anomaly detection.Led incident response, device lifecycle upgrades, DDoS mitigation, and DR testing for mission-critical systems.Maintained network documentation, telecom coordination, automation initiatives, and ITIL-based change management while mentoring engineers.

Education

• Osmania University, Hyderabad

  Bachelor's degree, Computer Science