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Network Security Engineer

CBTS

2 - 5 years

Chennai

Posted: 15/04/2026

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Job Description

Job Description:


Security Engineer III

Shift: US Shift

Work Location : Chennai


Provide senior (Level 3) firewall architecture and engineering expertise to large, complex enterprise LAN and WAN client in predominantly Palo Alto environment.

Security Architecture and Design: Develop and implement robust security architectures and frameworks to protect our infrastructure and applications.

Performance Tuning: Optimize firewall performance, ensuring high availability, scalability, and minimal impact on network traffic.

Incident Response: Investigate and respond to security incidents related to firewall breaches, performing root cause analysis and remediation.

Policy and Rule Management: Create and enforce firewall policies and access control rules, regularly reviewing and updating them to address new threats and changes in network topology.

Security Best Practices: Advocate for and enforce security best practices across all stages of the development lifecycle.

Collaboration: Work closely with development teams to integrate security features and practices into new and existing applications and systems.

Documentation and Reporting: Maintain comprehensive documentation for security procedures, incidents, and system configurations. Provide regular reports and updates to stakeholders.

Compliance: Ensure that security practices comply with industry standards, regulations, and company policies.

Review scripting, planning and execution of Firewall (Palo Alto) Change Management process

Investigate firewall issues / incidents and bring to resolution within stated SLA parameters

Working with Incident, Problem, and Change Management

Provide Root Cause Analysis (RCA) to operations team and customers upon request

Provide technical leadership (both verbal and written) for Incident and Change firewall related

Able to work on network drawings with Visio

Work and collaborate with other app teams

Good understanding of BGP / EIRGP routing, NAT/PAT, VPN, and firewall technologies


Accreditation / Certification / Licenses:

Required Certifications or equivalent experience: Palo Alto Certifications

Additional desirable certifications / equivalent experience:

CCNA Enterprise Route/Switch Other Security Certification

Previous Job Experience:

Network or Firewall build and engineering experience and expertise in a variety of predominantly in Palo Alto firewalls, Panaroma, PRISMA cloud, Cisco LAN and WAN in large, complex, enterprise environment

Experience implementing/managing firewall rules, policies, PAN-OS upgrades etc.,

Experience using network analysis, management, and performance monitoring tools to plan for growth, diagnose problems and determine source

Working on comprehensive projects in complex networking / VPN environment with IPSEC, Meet Me and NAT

Special Knowledge / Skills / Abilities:

  • Clear communication skills
  • Time Management / Self-Management
  • Independent Work Skills
  • Presentation skills
  • In-depth Routing Protocols experience and operational knowledge: EIGRP & BGP
  • Some example platforms in the environment include SDWAN, Palo Alto with virtual firewall contexts / vsys, Nexus 7K/5K/2K, Cisco ASR/ISR routers, and Cisco Catalyst switches
  • Familiarity with ITIL based ticketing solution (Service NOW experience a plus)
  • HSRP environment experience
  • In-depth knowledge of the configuration and maintenance of routers, switches, and firewalls



Interested candidates can share their resumes at hemamalini.dhanasekaran@cbts.com

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