Mohammed Zain
Senior Network Engineer
- Role
- Senior Network Engineer at AT&T
- Location
- Santa Clara, CA, US
- LinkedIn followers
- 500 followers
About Mohammed Zain
Senior Network Operations Engineer | Cisco, Juniper, SD-WAN, Palo Alto, ISE, Data Center,…
Experience
Senior Network Engineer
Nov 2023 — Present · US
Senior Network Engineer – County Network Upgrade ProjectManaged and successfully deployed a comprehensive network infrastructure upgrade for 250 county sites, supporting over users. Led the installation and configuration of Cisco C9300 switches, C8300 routers, Cisco Nexus 4K/9K switches, and Cisco access points across 20 sites. Integrated Palo Alto CloudGenix SD-WAN and Cradlepoint for backup solutions, ensuring high availability. Managed enterprise-level DHCP scoping, DNS servers, and IP address assignments via Infoblox, along with comprehensive routing and switching tasks.Key achievements include:Firewall and Security: Managed Palo Alto Networks firewalls with Panorama, performing updates and IPsec tunnel configurations for secure communication. Led the deployment and optimization of Cisco ISE for network access control, ensuring secure device onboarding and policy enforcement.Data Center & Network Optimization: Oversaw two large data centers with 200+ devices, configuring and optimizing network performance using routing protocols such as EIGRP, OSPF, BGP, and MPLS.SD-WAN & VPNs: Configured and managed SD-WAN solutions, including traffic analysis and optimization, VPN configuration, and security policies.Monitoring and Support: Implemented Cisco DNAC for network monitoring, replacing legacy tools like WhatsUp Gold, and integrated SolarWinds for ongoing performance tracking. Provided end-to-end support and troubleshooting for the entire county network, including resolving critical issues related to routing, switching, and security.Worked collaboratively with cross-functional teams, often exceeding regular work hours to meet tight deadlines, successfully transitioning the county to a modern, high-performance network environment.
Education
JNTUH College of Engineering Hyderabad
Bachelors in engineering
Lindsey Wilson College
Masters of Science in Management technology
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