Network Security Engineer

8 years

0 Lacs

Posted:19 hours ago| Platform: Linkedin logo

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Work Mode

On-site

Job Type

Full Time

Job Description

Key Responsibilities

Shift Leadership & Incident Response

  • Lead network security operations during assigned shifts; manage escalations and ensure SLA compliance.
  • Investigate and respond to network-based threats (DDoS, lateral movement, unauthorized access).
  • Execute network security playbooks and document RCA for incidents.

Network Security Operations

  • Configure, monitor, and maintain

    firewalls

    (Palo Alto, Fortinet, Check Point) and

    VPN solutions

    .
  • Manage

    IDS/IPS

    systems and ensure detection fidelity.
  • Implement and enforce

    network segmentation

    and zero-trust principles.

Zscaler Administration

  • Operate and troubleshoot

    Zscaler ZIA/ZPA

    policies for secure web and application access.
  • Monitor logs and alerts for anomalies; collaborate with network teams for policy optimization.

Threat Detection & Hunting

  • Perform network-based threat hunting using flow analysis, packet captures, and threat intel.
  • Tune IDS/IPS signatures and Zscaler policies to reduce false positives and improve detection coverage.

Reporting & Compliance

  • Prepare and present network security posture reports, including firewall rule audits, VPN usage, and threat trends.
  • Ensure compliance with frameworks (ISO 27001, NIST CSF) and support audit readiness.

Required Qualifications

  • 5–8 years

    in Network Security / SOC / Incident Response.
  • Hands-on experience with

    firewalls

    ,

    VPN

    ,

    IDS/IPS

    , and

    Zscaler ZIA/ZPA

    .
  • Proven

    Shift Lead

    experience in a 24×7 environment.
  • Strong understanding of TCP/IP, routing, switching, and network protocols.
  • Excellent communication and reporting skills.

Nice-to-Have

  • Experience with

    cloud networking security

    (Azure/AWS/GCP).
  • Familiarity with

    DDoS mitigation

    ,

    proxy/DLP

    , and

    network forensics

    .
  • Certifications:

    CCNP Security

    ,

    PCNSE

    ,

    Zscaler Certified Professional

    ,

    Security+

    ,

    CySA+

    .

Tools & Technologies

  • Firewalls:

    Palo Alto, Fortinet, Check Point
  • IDS/IPS:

    Snort, Suricata, Cisco Firepower
  • Zero Trust:

    Zscaler ZIA/ZPA
  • VPN:

    IPsec, SSL VPN solutions
  • Monitoring:

    Wireshark, NetFlow, Zeek

KPIs

  • Network incident MTTD/MTTR
  • Firewall rule audit compliance
  • VPN uptime and secure access SLA
  • Threat detection accuracy and false positive reduction


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