L3 Network

2 days ago

Mumbai, Maharashtra, India Neev Full time ₹ 12,00,000 - ₹ 36,00,000 per year

ob Description: L3 Network & Security Engineer
Position: L3 Network & Security Engineer
Location: (Specify Location)
Experience: 5–10 Years
Industry: Telecom / Enterprise IT / Managed Security Services
Overview

We are seeking an experienced L3 Network & Security Engineer with strong hands-on expertise in managing and supporting enterprise security infrastructure including firewalls, IDS/IPS, WAF, proxy solutions, and secure email gateways. The role requires deep operational experience with advanced security tools such as FireEye, Cisco ASA/Firepower, Cisco ISE, Arbor DDoS, and AlgoSec. The ideal candidate will be responsible for high-level troubleshooting, incident resolution, configuration changes, and ensuring the overall security posture of the organization.

Key Responsibilities
1. Security Infrastructure Operations (L3 Support)

  • Provide advanced troubleshooting and escalation support for:

    • Firewalls (Cisco ASA, Firepower, Palo Alto, Check Point etc.)

    • IDS/IPS platforms

    • Web Application Firewalls (WAF)

    • Secure Web Proxies (Blue Coat, Zscaler, or others)

    • Email security gateways (Cisco ESA/IronPort, Proofpoint, etc.)

  • Lead critical incident handling, root cause analysis, and problem management for security infra issues.

  • Perform configuration changes, rule updates, and policy optimization on all security appliances.

  • Review and fine-tune firewall and IPS/IDS rules for enhanced threat mitigation.

2. Operational Security Tools Expertise

  • Hands-on experience operating and troubleshooting:

    • FireEye NX/EX/ETP (malware detection, incident triage, alert analysis)

    • Cisco ASA / Firepower (FTD FMC) (policy creation, troubleshooting packet flow, HA failover)

    • Cisco ISE (802.1x, TACACS, posture policies, profiling)

    • Arbor DDoS (traffic baselining, attack analysis, mitigation policy creation)

    • AlgoSec (firewall rule analysis, change automation, compliance reporting)

  • Use these tools for threat detection, investigation, remediation, and reporting.

3. Network Security Architecture & Governance

  • Work closely with architecture teams to implement secure designs for infrastructure upgrades, new deployments, and environment changes.

  • Ensure security configurations meet compliance standards and internal policies.

  • Participate in audit reviews, configuration assessments, and vulnerability correction activities.

4. Change, Incident & Problem Management

  • Manage high-priority change requests for firewall, IPS, ISE, and proxy infrastructure.

  • Conduct impact analysis, risk mitigation planning, and pre/post-implementation checks.

  • Create and maintain L3 knowledge base articles, SOPs, and process documentation.

5. Monitoring, Analysis & Reporting

  • Monitor network security events, traffic patterns, and anomalies.

  • Analyze logs from FireEye, Firepower, ISE, and other security platforms.

  • Prepare daily/weekly security dashboards, incident summaries, and compliance reports.

Required Skills & Qualifications
Technical Skills

  • 5–10 years of experience in Network & Security Operations with an L3-level profile.

  • Strong hands-on knowledge of:

    • Cisco ASA, FTD/Firepower with FMC

    • IDS/IPS technologies

    • WAF technologies (F5 ASM, Imperva, Akamai, etc.)

    • Proxy solutions (Zscaler, Blue Coat/Symantec, Squid)

    • Email Security Gateways

  • Solid understanding of:

    • TCP/IP, Routing, Switching, NAT, VPNs, Certificates

    • Threat intelligence & advanced malware detection technologies

    • Network Access Control (NAC) via Cisco ISE

Tool Expertise (Mandatory or Strong Preference)

  • FireEye

  • Cisco ASA / Firepower

  • Cisco ISE

  • Arbor DDoS

  • AlgoSec

Soft Skills

  • Strong communication and coordination skills.

  • Ability to lead war rooms and manage high-severity incidents.

  • Good documentation, auditing, and reporting capabilities.

  • Strong analytical and problem-solving skills.

Preferred Certifications

  • CCNP Security / CCIE Security (preferred)

  • Cisco Firepower Certification (FMC/FTD)

  • Palo Alto PCNSE (if applicable)

  • FireEye or Network Forensics Training

  • ITIL Foundation

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