Computronics Systems - L3 Network Security Engineer - Cisco (8-12 yrs)

Role : L3 Network Security Engineer.

Position Overview :

We are seeking an experienced L3 Network Security Engineer to lead and manage complex network security infrastructure, including firewall solutions, NAC, and enterprise-wide network operations.

Experience & Qualifications :

- Minimum 8 years of hands-on experience in managing WAN network

- Bachelor's/Master's degree (Engineering graduates preferred).

Required Certifications : (any one )

- CCNP/JNCIP, SDWAN certification or equivalent.

- Product certifications in PA/Checkpoint/Cisco ASA/Fortinet.

- Cisco ISE certification (CCNP Security or equivalent) preferred

Technical Skills & Platforms :

- Network Infrastructure.

Expert knowledge in :

- Cisco ISE.

- SD-WAN infrastructure.

- Cisco & Juniper Core routers and Switches.

- Cisco ACI.

- Traditional routing and switching protocols.

Proficiency in managing :

- PA/Checkpoint/Cisco ASA/Fortinet solutions.

- Network Access Control (NAC) infrastructure.

- Identity management systems (Azure AD, on-premises AD) Key Responsibilities Network Security Management.

- Configure, test, and maintain LAN & WAN for campus, core network & branch network.

- Manage and maintain enterprise firewall infrastructure.

- Implement and maintain network security policies, standards, and procedures.

- Lead security infrastructure projects through full lifecycle including: -.

Requirements gathering - Planning - Design & implementation - Network performance monitoring - Equipment upgrades - Network optimization Advanced Technical Operations.

SDWAN Infrastructure Management and troubleshooting.

Handle critical escalations and provide technical leadership.

Create and maintain :

- High-Level Design (HLD)

- Low-Level Design (LLD)

- Implementation plans

- Network architecture documentation

- Operational Excellence.

- Review and execute major changes.

- Troubleshoot critical/major network incidents.

- Manage and optimize system performance.

- Create and maintain SOPs for troubleshooting and problem resolution.

- Coordinate with OEM TAC for advanced support Team Leadership.

- Provide technical guidance to L1 & L2 teams.

- Handle escalated cases from junior teams.

- Mentor and train team members.

- Coordinate with cross-functional teams.

- Lead POCs and new technology evaluations

Required Soft Skills :

- Strong analytical and problem-solving abilities

- Excellent project management capabilities Superior verbal and written communication skills

- Ability to work under pressure in a 24/7 environment Strong documentation skills

- Excellent vendor management abilities