L3 Network & Security Engineer

JD :

We are seeking a seasoned Network & Security L3 Engineer to manage and support enterprise-level data center and network infrastructure. The ideal candidate will bring deep expertise in core networking, security frameworks, and advanced troubleshooting in both traditional and software-defined environments. This is a hands-on technical role requiring proactive problem-solving and end-to-end infrastructure management capabilities.

Key Responsibilities :

• Design, implement, and support Data Center Infrastructure Technologies.
• Troubleshoot and resolve complex TCP / IP connectivity issues, including IP addressing and subnetting.
• Perform advanced routing and switching troubleshooting, with in-depth knowledge of L2 Switching, Spanning Tree, PortChannels, and Trunking.
• Configure and maintain IP Routing protocols and ensure high availability and failover mechanisms.
• Implement and manage SDN and SD-WAN solutions, optimizing performance across hybrid and multi-site environments.
• Administer wireless and WAN technologies, ensuring consistent and secure connectivity.
• Monitor, configure, and troubleshoot firewalls, ensuring network security and compliance.
• Collaborate with cross-functional teams for infrastructure upgrades, migrations, and incident resolution.
• Maintain documentation, standard operating procedures, and network diagrams.
• Ensure adherence to security policies, perform regular audits, and manage risk mitigation.

Required Skills and Expertise :

Preferred Certifications (Optional but Advantageous) :

(ref : hirist.tech)