Network Security Engineer

This is an excellent opportunity for Network Engineer professionals to be part of leading-edge technology projects. Cognizants Cloud, Infrastructure & Security Services Practice provides end-to-end solutions covering architecture, design, implementation, management, and on-going support across the entire enterprise technology infrastructure. Our services include a spectrum of management, consulting, and systems integration services to help our clients maximize value in their infrastructure resources, while optimizing infrastructure performance and cost.

Key Responsibilities :

• Design, configure, and support scalable and secure enterprise network architectures across hybrid environments (on-premises and AWS Cloud).
• Implement and manage Cisco switching technologies and ensure optimal network performance and redundancy.
• Configure and maintain Palo Alto Networks Firewalls (both physical and virtual), ensuring proper security policies and compliance.
• Administer and optimize dynamic routing protocols such as OSPF and BGP for efficient network traffic flow.
• Manage AWS networking components, including Transit Gateways, VPC Attachments, Security Groups, Endpoints, GWLB, ALB, NLB, and WAF.
• Provide technical leadership in wireless technologies and oversee deployments using Meraki products.
• Identify and implement automation opportunities to reduce manual intervention and operational overhead in collaboration with automation teams.
• Troubleshoot complex network issues through strong analytical and logical reasoning skills to ensure minimum downtime.
• Develop, update, and maintain detailed network documentation, architecture diagrams, and configuration standards.
• Collaborate with cross-functional teams to support network integration, security, and performance initiatives.

Required Skills

• Solid foundation in core networking concepts including TCP/IP, VLANs, DNS, DHCP, and subnetting.
• Hands-on proficiency in Cisco Switching Technologies (Must).
• Expertise in Palo Alto Networks Firewalls (Must).
• Strong knowledge of Dynamic Routing Protocols OSPF, BGP.
• Extensive experience in AWS Networking Transit Gateways, ALB/NLB, Security Groups, Endpoints, GWLB, WAF (Must).
• Strong understanding of Wireless Networking, with hands-on experience using Meraki products.
• Excellent logical thinking and troubleshooting skills to resolve complex technical issues (Must).
• Proven automation skills to identify network improvement opportunities (Must).
• Certifications preferred: CCNP, AWS Certified Advanced Networking, PCNSE (Palo Alto), or equivalent.