Lead Administrator (Support &Operations)

Chennai, Tamil Nadu

Job Summary

• *Job Summary:**

We are looking for an L2 Network Security Engineer with strong hands\-on experience in Firewall technologies (Meraki, Palo Alto, Fortigate – any 2 mandatory) and operational exposure to Zscaler (ZIA/ZPA), Microsoft Defender for Office 365 (MDO), and WAF (Cloudflare).

The role focuses on BAU operations, ticket handling, troubleshooting, and change implementation in a 24×7 rotational shift environment.

Key Responsibilities

Key Responsibilities

Handle INC / SR / CR tickets within SLA

Execute firewall configuration changes (rules, NAT, VPN)

Troubleshoot network, Zscaler, email security, and WAF issues

Perform initial RCA and log analysis

Support Zscaler, MDO, and WAF operations

Escalate complex issues to L3/OEM

Maintain operational hygiene and documentation

Provide customer communication and updates

Skill Requirements

• *Required Skills:**

• *Firewall (Any 2 Mandatory:** Meraki / Palo Alto / Fortigate)

• *Hands\-on experience in:**

Security policies, NAT (SNAT/DNAT), ACLs

Zone\-based firewall configuration

• *VPN knowledge:**

IPSec / SSL VPN configuration \& troubleshooting

• *Troubleshooting:**

Connectivity issues (policy/NAT/routing)

• *Log analysis:**

Traffic, threat, system logs

• *Exposure to:**

Meraki Dashboard / Panorama / Forti Manager

Other Requirements

Zscaler (ZIA / ZPA)

• *ZIA:**

URL filtering, web access policies

Traffic forwarding (PAC, GRE/IPsec)

• *ZPA:**

Basic application access configuration

Client Connector troubleshooting

Basic understanding of SSO (Azure AD / SAML)

• *Troubleshooting:**

User internet access and application access issues

MDO 365 (Email Security)

Anti\-spam and anti\-malware policies

Safe Links / Safe Attachments

Email trace and mail flow troubleshooting

Quarantine management

Handling phishing/spam issues

Basic awareness of SPF, DKIM, DMARC

WAF – Cloudflare

OWASP rule handling

IP blocking / Geo\-blocking

Rate limiting

Basic DDoS handling

Troubleshooting false positives

• *Good to Have:**

Basic networking (Routing \& Switching)

SIEM exposure (Splunk / QRadar)

ITIL knowledge

Basic scripting / automation

Certifications

Palo Alto PCNSA

Fortinet NSE 1–4

Meraki (CMNA)

Microsoft SC\-900 / MS\-500

Zscaler ZCCA

✅ Soft Skills

Good communication skills (mandatory)

Customer\-facing handling

Willingness for 24×7 rotational shift

Strong troubleshooting approach

Team collaboration

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