Prashant Tyagi

[email protected] +91-9990999461
LinkedIn: linkedin.com/in/prashant-tyagi

PROFESSIONAL SUMMARY

Results-driven Senior Network Consultant with over 15 years of expertise in designing and optimizing complex LAN/WAN infrastructures, specializing in Cisco technologies including SD-WAN (Viptela), SDA, ACI, and DNAC. Proven track record of leading network architecture projects that improved system performance by 30% and reduced downtime by 25% through innovative security implementations such as Cisco ISE. Adept at delivering scalable, secure, and high-performance network solutions that align with business objectives and drive operational excellence.

WORK EXPERIENCE

Senior Consultant
04/2024 - Present
HCL Technologies , Noida, India
Led and mentored a team of 15 engineers across India and global sites, fostering cross-functional collaboration that accelerated SDN migration projects by 20% and enhanced team cohesion
Spearheaded the implementation of next-generation SDN technologies including Cisco SDA (Software-Defined Access) and ACI (Application Centric Infrastructure), resulting in a 30% increase in network automation and a 25% improvement in security posture
Orchestrated the successful design and deployment of SDA infrastructure at Nagpur and Vijayawada, reducing manual network configuration errors by 40% and boosting operational efficiency
Directed the seamless migration of legacy data centers to Cisco ACI, improving scalability by 35% and ensuring zero downtime during transition
Managed India-wide SIP & T&T projects, driving technology transformation initiatives that contributed to a 15% reduction in operational costs
Built strong bridges between engineering, compliance, and business teams to ensure on-time delivery, regulatory adherence, and alignment with strategic organizational goals
Technical Designer
06/2022 - 04/2024
British Telecom , Gurgaon India
Led the design and delivery of over 50 customer-centric network solutions, translating complex requirements into scalable, high-performance architectures that increased client satisfaction by 20%
Developed and presented comprehensive High-Level, Medium-Level, and Low-Level Design documents, ensuring alignment with business objectives and reducing design approval times by 30%
Spearheaded SD-WAN transformation projects across 40+ customer sites and multiple data centers, achieving a 25% improvement in network efficiency and a 15% reduction in operational costs
Authored detailed runbooks and migration plans, streamlining deployment processes and minimizing downtime during site migrations by 40%, while providing Level 3 support and collaborating with vendors to resolve critical P1/P2 issues within SLA targets
Technical Manager
02/2015 - 06/2022
HCL Technologies
Led a global Network Onboarding Team to successfully deliver over 2,000 network infrastructure implementations across enterprise offices, SEZ campuses, and data centers spanning India, APAC, EMEA, and the US, improving deployment efficiency by 20%
Designed and executed comprehensive LAN/WAN/MPLS architectures, including High-Level and Low-Level Designs (HLD/LLD), BOQ preparation, and feasibility analysis, resulting in a 15% reduction in project delivery time
Spearheaded major campus-level network deployments at strategic locations such as Noida SEZ, Lucknow SEZ, Nagpur SEZ, Madurai, Singapore, Japan, Sydney, New Zealand, Hong Kong, Malaysia, Poland, Finland, and the USA, enhancing network reliability and scalability
Directed complex data center migrations from legacy Layer 3 architectures to Cisco ACI Spine Fabric, incorporating VRF design, MPLS PE/P configuration, QoS, AAA, and NMS integration, achieving a 30% increase in network performance and security
Managed critical network merger projects including Geometric Matrix/C3I and Xerox US, overseeing seamless service migration to the HCL backbone with zero downtime
Delivered end-to-end global network onboarding for new ODC/OMC offices and campus infrastructures, accelerating time-to-market by 25%
Orchestrated successful migration of major data centers from Noida and Bangalore to Bharti collocated sites, reducing operational costs by 18%
Senior Engineer
12/2012 - 11/2014
Mindtree Limited
Managed and supported four data centers across the Netherlands (Groningen, Busum, Aalsmeer, Haarlem) interconnected via MPLS backbone (IPSB)
Oversaw 300+ network devices including Cisco L2/L3 switches (6500, 3600, 2900), Foundry load balancers, and Checkpoint Firewalls (R65), ensuring connectivity for 5,000+ servers
Implemented ACLs, VLAN scanning, and VRRP for Layer 3 traffic on core switches
Configured routing on L2/L3 switches and managed load balancer operations (binding/unbinding servers and ports)
Added/deleted policies in Checkpoint firewalls for secure traffic flow
Troubleshot network issues and delivered Root Cause Analysis (RCA) for priority incidents
Senior Engineer
06/2010 - 12/2012
CM Limited
Managed the IISc Campus Network covering 64+ departments, ensuring seamless connectivity and high availability
Oversaw 150+ L2 switches and 32 L3 switches, including Cisco 2900, 3600, 4200 series and Nortel Contivity Firewall
Configured Inter-VLAN communication on L3 switches for departmental connectivity
Implemented VRRP for redundancy on core switches and deployed OSPF across the campus network
Configured BGP on ISP-facing switches and monitored WAN links for optimal performance
Delivered proactive troubleshooting and network optimization for critical infrastructure

EDUCATION

B. TECH IT
01/2006 - 01/2010
VIET, Gautam Budh Nagar

SKILLS

Technical Skills: Enterprise Networking, LAN/WAN Design, Routing and Switching, Cisco SD-WAN, FortiGate SD-WAN, Network Security, Performance Optimization, Troubleshooting
Soft Skills: Problem Solving, Analytical Thinking, Client Communication, Team Collaboration, Adaptability
Tools: Cisco ISE, Cisco DNA Center, Cisco ACI, Cisco SD-Access, Viptela SD-WAN
Other: Legacy Networking Protocols, Network Architecture, Industry Best Practices, HCL Technologies Experience

CERTIFICATIONS

CCNP
ITIL Foundation

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