Raghav Gaur
Faridabad,Haryana
Summary
Senior Network Security Engineer (L2 SME) with 7.8 years of experience specializing in SASE and Next-Gen Firewalls. Expert in executing Zero Trust architectures, optimizing policies, and advanced troubleshooting across Zscaler (ZIA, ZPA, ZDX) and Palo Alto Networks. Adept at managing complex traffic forwarding, resolving critical incidents, and aligning edge security with core infrastructure.
Backed by CCNA & CCNP certifications with hands-on expertise in enterprise routing and Cisco SD-WAN (Viptela).
Overview
8
8
years of professional experience
Work History
Senior Network Engineer
Saksoft (Off-role for Colt Technology Services)
gurugram, India
09.2024 - Current
- Enterprise SASE Administration: Deliver end-to-end L2 engineering support for Zscaler Internet Access (ZIA) and Zscaler Private Access (ZPA), guaranteeing secure, high-availability connectivity for 8,000+ global enterprise users.
- Zero Trust Deployment: Configure and manage ZPA App Connectors, Machine Tunnels for seamless pre-boot connectivity, and Source IP Anchoring (SIPA) for IP-restricted SaaS applications.
- Granular Micro-Segmentation: Enforce strict Zero Trust Network Access (ZTNA) policies by validating user identities and group memberships to restrict application access to specific App Segments and Server Groups.
- Connector Health & Redundancy: Proactively monitor, provision, and troubleshoot App Connector health status and connection logs to guarantee uninterrupted remote access and zero downtime.
- Advanced Edge Security: Design and deploy ZIA L3/L4 Firewall Filtering, URL/Domain Filtering, Cloud App Control, and File Type Control policies to eliminate security vulnerabilities and enforce compliance.
- Decryption & Traffic Engineering: Lead enterprise-wide SSL/TLS Inspection rollout, troubleshooting complex decryption exclusions, authentication failures, and traffic forwarding via PAC, GRE, and IPsec tunnels.
- Incident Diagnostics & Optimization: Analyze Zscaler Web/Firewall Insights logs and utilize Zscaler Client Connector (ZCC) packet captures to optimize policies, eliminate false positives, and restore business-critical access.
- MNC ITSM Operations: Maintain 100% SLA compliance across global networks using ServiceNow and Jira for efficient ticket triage, root cause analysis (RCA), and technical vendor escalations.
Engineer Integrated Ops
Orange Business Services
Gurugram
02.2022 - 09.2024
- Provided L1 operational support for Zscaler ZIA and ZPA, troubleshooting authentication failures, policy misconfigurations, traffic forwarding (PAC, Z-Tunnel, GRE/IPsec), and App Connector connectivity issues, coordinating with Zscaler TAC when required.
- Monitored and analyzed ZIA/ZPA logs and dashboards to identify access failures, false positives, and performance issues, ensuring timely resolution and SLA compliance.
- Supported Zero Trust access (ZPA) by validating user identity, group membership, app segments, server groups, and App Connector health.
- Delivered L1 support on Palo Alto Firewalls, resolving security policy and NAT-related issues, and analyzing traffic, threat, and URL filtering logs.
- Troubleshot GlobalProtect VPN connectivity issues and escalated complex Palo Alto cases (SSL inspection, security profiles, advanced policies) to L2/TAC with complete diagnostics.
- Performed basic network troubleshooting involving BGP/MPLS routing, neighbor failures, path flaps, and VPN stability to maintain optimal connectivity.
- Assisted with SD-WAN (Viptela/Meraki) monitoring, validating tunnel status, control connections, and traffic steering under standard procedures.
- Proactively monitored network health using SolarWinds, responding to alerts such as link down, latency, packet loss, and bandwidth over-utilization.
- Supported global airline customers (Qantas, Emirates, British Airways, Qatar Airways) with incident management, effective communication, and timely escalation to meet SLA commitments.
NOC Engineer
Aerial Telecom Solutions PVT. Ltd, Bharti Airtel
Manesar
03.2021 - 01.2022
- Provide L1 Support Technical to Airtel B2B customers.
- Working and Network Monitoring with, NMS devices like ECI SDH, ECI NPT, TNG and Alcatel, Cisco, Huawei.
- Provisioning of customer MPLS L2VPN links (i.e. Airtel Enterprise customers B2B) by creating, Epipe, SAP, SDP, XCONNECT, L2VC based services on routers using various Protocols.
- Manage incidents and network performance within SLA's and KPI's.
- Prioritize incident response and escalation to senior resources when necessary.
- Effective communication to all customers including BT, NTT, GTT, AT&T, Sify, TATA, Verizon, Expereo, etc.
- Effective communication to all vendors and circle team, escalationsas per process
Communication Technician
Serco Dubai
Dubai
06.2018 - 11.2020
- Network connectivity troubleshooting, ping, tracert, telnet.
- Administering & designing LANS, WANS internet/intranet, and voice networks.
- Cisco & Alcatel lucent Routing and switching configuration in VLAN,OSPF, EIGRP, VRRP, STP configuration/troubleshooting.
- Maintained compliance with company standards to perform all maintenance activities.
- Maintenance of Train On-Board Communication equipment.
- Preventive & corrective maintenance of Train, Station and Depots including Bi-weekly checks & Engage with major maintenance (Predictive maintenance) team for doing 3 monthly, 6 monthly, 1 yearly and 2 yearly checks. Investigating, diagnosing and resolve all network problems.
- Root cause analysis and problem solving in relation with Engineering.
Education
Bachelor of Technology - Electronic and Communication Engineering
Echelon Institute of Technology
2016
Certificate of Higher Education - science
Green Wood Convent Public School
2012
Skills
- Zscaler ZIA, ZPA, ZDX
- Palo Alto
- Cisco-certified CCNA
- CCNP Network Kings
- SD-WAN Viptela
Timeline
Senior Network Engineer
Saksoft (Off-role for Colt Technology Services)
09.2024 - Current
Engineer Integrated Ops
Orange Business Services
02.2022 - 09.2024
NOC Engineer
Aerial Telecom Solutions PVT. Ltd, Bharti Airtel
03.2021 - 01.2022
Communication Technician
Serco Dubai
06.2018 - 11.2020
Bachelor of Technology - Electronic and Communication Engineering
Echelon Institute of Technology
Certificate of Higher Education - science
Green Wood Convent Public School