Prathamesh Vishwas
Network Security Engineer | Zscaler (ZIA/ZPA) | Palo Alto | Infoblox | SASE | Zero Trust
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About
Network Security Engineer with 3+ years of experience in Secure Service Edge (SSE), Secure Access Service Edge (SASE), Zero Trust Network Access (ZTNA), and Enterprise Security Operations. Specialized in Zscaler Internet Access (ZIA), Zscaler Private Access (ZPA), Palo Alto Firewalls, and Infoblox DDI administration. Proven expertise in incident management, policy optimization, network troubleshooting, and security operations for global enterprise environments.
Resolved 500+ security and network incidents while supporting environments with 70K+ active users and consistently achieving SLA compliance.
Experience
Product Specialist Engineer at Wipro (2025-07 – Present)
- Deliver Level-2 support for enterprise network and security environments, ensuring high service availability and timely incident resolution.
- Administer and optimize Palo Alto Firewall policies, security rules, and network configurations.
- Implemented 730+ security policy changes through Tufin and Panorama while ensuring compliance with organizational security standards.
- Performed High Availability (HA) activities and firewall maintenance operations on Palo Alto environments.
- Administered Infoblox DDI solutions including DNS, DHCP, and IPAM services and completed 200+ DNS and IP registration activities.
- Monitor and investigate security events using SolarWinds, ServiceNow, and IBM QRadar.
- Perform troubleshooting and root cause analysis for network and application connectivity issues.
L2 Network & Security Engineer at Tata Communications (2023-07 – 2025-07)
- Provided Level-2 operational support for global enterprise customers utilizing Zscaler Internet Access (ZIA) and Secure Web Gateway technologies.
- Implemented and managed Zscaler policies including URL Filtering, Firewall Rules, SSL Inspection, and PAC file configurations.
- Troubleshot complex network and security incidents involving proxy authentication, SSL decryption, application access, and internet connectivity.
- Provided Level-1 support for Versa SD-WAN environments and routing-related issues.
- Resolved 500+ incidents while maintaining high SLA compliance and supporting environments with more than 70K active users.
- Analyzed network traffic using Wireshark, HAR logs, and packet captures to identify and resolve critical issues.
- Served as an escalation point for technical incidents and participated in change management activities.
Education
Bachelor of Engineering in Electronics & Telecommunication – Savitribai Phule Pune University (2023)
