Sanjeev Kumar

Network & Security Specialist Architect | Design, Implementation, Management, Optimization & Migration | Cisco ACI | SD-WAN | MPLS | AWS/Private Cloud | F5 | Cisco ISE | Palo Alto | ASA | Integration & Micro-Segmentation

Role
Network Security Architect at Capgemini
Location
Denver, CO, US
LinkedIn followers
500 followers
Information TechnologyView LinkedIn profile

About Sanjeev Kumar

Network & Security Architect (18+ yrs) designing enterprise, data-center, and AWS cloud…

Experience

  1. Network Security Architect

    Capgemini

    Jan 2024 — Present · Plano, TX, US

    Public Cloud Integration: Designed and implemented AWS–on-premises network connectivity using VPN, Direct Connect, TGW peer links, and route propagation to establish secure and reliable hybrid-cloud communication.SD-WAN Deployment: Led SD-WAN rollout across 250+ sites, ensuring optimized connectivity, centralized management, and improved operational visibility.Network & Security Audit: Conducted comprehensive network and security assessments, identifying routing loops, misconfigurations, and policy gaps to enhance overall network integrity.Data Center Modernization: Planned and executed migration from legacy infrastructure to Cisco ACI fabric, developing HLD/LLD documentation, and defining integration frameworks for IP, firewalls, load balancers, and DNS.Core & Distribution Upgrade: Designed and implemented core and distribution switch refresh projects, improving throughput, redundancy, and reliability across enterprise networks.Firewall Security & Hardening: Enhanced data-center security posture by refining firewall policies, upgrading Palo Alto hardware/software, and leading ASA-to-Palo Alto migration initiatives.Impact:These initiatives collectively improved network agility by 40%, strengthened security posture by 35%, and increased infrastructure reliability by 45%. Achieved faster provisioning and reduced operational overhead through standardized architectures and automation, while ensuring global compliance and long-term scalability across hybrid-cloud environments.

Education

  • Madurai Kamaraj University

    Bachelor of Computer Applications

  • State Board of Technical Education

    Diploma in Information Technology

  • Shobhit University

    Master of Computer Applications - MCA

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Sanjeev Kumar — Network Security Architect at Capgemini in Denver, CO, US | Unifers