Senior Network Engineer - Enterprise/Data Center Expert
Resume:
Kumar Koti
Network Engineer
Email: ***********.*@*****.***
Contact: +1-425-***-****
Professional summary:
Senior Network Engineer with 10+ years of experience delivering enterprise, data center, and hybrid network solutions in global environments
Strong expertise in LAN/WAN, Data Center, and SD-WAN (Cisco Viptela) architectures supporting 24 7 mission-critical operations
Hands-on experience with Cisco Nexus (9K/7K/5K) and Catalyst (9K/6K) platforms for large-scale enterprise networks
Deep knowledge of routing and switching technologies including BGP, OSPF, EIGRP, MPLS, QoS, and traffic engineering
Proven background in network security engineering using NGFWs (Cisco ASA/Firepower, Fortinet, Juniper SRX) and security best practices
Experience implementing VPN technologies including IPSec, GRE, DMVPN, and site-to-site connectivity
Strong exposure to hybrid cloud networking, including SD-WAN integration with cloud providers and virtualized environments (NSX)
Expertise in data center technologies such as vPC, VSS, OTV, FabricPath, STP/RSTP, FCoE, and high-availability designs
Hands-on experience with load balancing solutions using F5 LTM/GTM for application availability and performance
Skilled in network monitoring, performance analysis, and proactive troubleshooting using SolarWinds, NetScout, NetBrain, LiveAction, Wireshark, Cisco Prime
Proven ability to provide Tier-3 escalation support, resolve complex network issues, and reduce downtime in large environments
Experienced in ITIL-based incident, problem, and change management, including CRQs and operational governance
Strong documentation skills with experience creating HLDs, LLDs, SOPs, and operational runbooks
Demonstrated leadership in network migrations, upgrades, and modernization projects, coordinating with vendors and cross-functional teams
Known for a security-first, automation-aware mindset, continuous improvement, and delivering scalable, reliable network solutions
TECHNICAL PROFICIENCIES AND SUPPORT EXPERIENCE:
Category
Skills / Tools
Networking Technologies
LAN/WAN, SD-WAN (Cisco Viptela), VLAN, Trunking, STP/RSTP/PVST/RPVST, EtherChannel (LACP/PAgP), OSPF, EIGRP, BGP, RIP, MPLS, QoS, Route Summarization, Policy-Based Routing, VPN (IPSec, GRE, DMVPN), HSRP, VRRP, GLBP, VLSM, IPv4/IPv6, TCP/IP, OSI Model
Network Devices / Hardware
Cisco Nexus (9K/7K/5K/2K), Cisco Catalyst (9K/6K/4K/3K/2K), Cisco ASA/Firepower, F5 LTM/GTM (2400/6400/6800/8800/8900), Juniper SRX/EX/QFX (EX2200/4200/6200/8200/9200, MX104), Arista, HP Switches, Alcatel, Enterasys, Brocade, CheckPoint, Fortinet
Cloud / Virtualization
NSX, VMware, Hyper-V, OpenStack, Cloud Networking (AWS/Azure - exposure), Hybrid Cloud Integration, SD-WAN Cloud Integration
Security
NGFW, ASA/FIREPOWER, FortiGate, Juniper SRX, IPS, URL Filtering, SSL Inspection, User Identity, AAA (RADIUS/TACACS+), ACLs, NAT/PAT, VLAN Security, DHCP Snooping, Port Security, VPN Security, Network Access Control (NAC), Zero Trust Awareness
Load Balancers
F5 LTM/GTM, Cisco ACE, BIG-IP, Traffic Management, Application Redundancy
Monitoring & Troubleshooting Tools
SolarWinds, NetScout, NetBrain, LiveAction, Cisco Prime, Wireshark, TCPdump, SNMP, Syslog, NTP, NMTP, BMC Remedy, Riverbed, KiWi Syslog, Statseeker
Server / OS
Windows (95â2019), Linux/Unix, MacOS, OS/400, NetWare, DHCP, DNS, FTP, HTTP, NTP Servers
Telecommunications
Metro Ethernet, OC-x, DS-x, T1, ISDN, POTS, Frame Relay, ATM, Cable, DSL
POS & Business Systems
JDA WinDSS, Microsoft RMS, Custom POS Systems
Documentation / Process
HLD, LLD, SOPs, Runbooks, RFP, NIP, NMP, NRFU, Change Requests (CRQs), ITIL Processes (Incident, Problem, Change Management)
Automation / Scripting (Exposure)
Python (basic automation), Ansible (awareness), REST APIs, YAML/JSON
Project & Team Skills
Network Design, Migration, Upgrade, Vendor Coordination, Mentoring Junior Engineers, Cross-Functional Collaboration, Tier-2/3 Support
Client: Panasonic Dec 2024 to Present
Position: Sr.Network Engineer
Roles & Responsibilities:
Installed and maintained external customer networks (private circuits, T1, ISDN) in an international Data Center
Participated in network infrastructure design, including ACLs, OSPF, BGP, static routing, DNS, and voice gateways
Migrated client IT network infrastructure to Teleglobe Communications Hosting Data Center
Installed and maintained Cisco routers (26xx/36xx series) with periodic backups and configuration clean-up
Configured network monitoring tools (SolarWinds) for proactive performance tracking
Led change management approvals and collaborated with cross-functional teams for operational changes
Implemented and supported LAN/WAN solutions using Cisco Nexus (9Kâ2K) and Catalyst switches (9Kâ2K)
Provided Tier-2 and Tier-3 network support, resolving complex issues for LAN/WAN environments
Configured ASA 5540 firewalls for Internet access, NAT/PAT, and security enforcement
Deployed BIG-IP LTM 8900 for application redundancy and load balancing
Implemented Quality of Service (QoS), policy maps, and policy routing across multiple sites
Managed vendor coordination (Cisco, Oracle, F5, VZ, AT&T) for network configuration and integration
Conducted advanced routing protocols configuration (BGP, EIGRP, OSPF) and VLAN management
Participated in on-call 24 7 rotation for critical network support
Documented network operations, maintenance procedures, and escalation guidelines
Client: IPG Mediabrands Sep 2023 to Nov 2024
Sr.Network Engineer - Network Design and Deployment Services
Roles & Responsibilities:
Designed, configured, and tuned data center/core network infrastructure using Cisco Nexus & Catalyst switches
Configured and integrated monitoring tools such as SolarWinds, NetScout, NetBrain, Cisco Prime
Led VIPTELA SD-WAN deployment across multiple locations with cloud provider integration
Managed LAN/WAN infrastructure, ensuring high availability and network performance
Extended and configured VLANs to enable inter-data center connectivity
Configured Hyper-V LAN to decouple virtual networks from physical network constraints
Supported ASA Firewall migration from PIX to ASA and FWSM cost optimization
Integrated Cisco UCS, Nexus data center, and virtualized environments for hybrid network deployments
Configured BGP features such as AS-override, local-preference, and EBGP load sharing
Supported Juniper routers and switches for network redundancy and connectivity
Provided daily support for nationwide MPLS, VPN, and point-to-point networks
Installed and configured NSX Managers and controllers, implemented distributed firewall rules
Participated in network performance tuning and troubleshooting across all data center layers
Coordinated with vendors and IT teams for seamless integration of new technologies
Documented network design, configuration changes, and SD-WAN deployment procedures
Client: Sopra Steria, INDIA Dec 2018 to Aug 2022
Senior Network Engineer
Roles & Responsibilities:
Designed, deployed, and maintained network security appliances including FortiGate, Juniper SRX, Cisco ASA/FIREPOWER
Implemented NGFW features like SSL inspection, URL filtering, and user identity
Detected and mitigated common network attacks (DoS/DDoS, spoofing, MITM, botnet)
Configured Cisco secure routing: IOS AAA, TACACS, RADIUS, ACLs, traffic filtration
Configured Cisco secure switching: DHCP snooping, port security, VLANs, PVLANs
Deployed and maintained data center security devices including NGFW 5585X, IPS, and FortiGate 2000E
Conducted packet capture and analysis using Wireshark, tcpdump, SPAN, RSPAN
Managed monitoring software: SolarWinds, EMC SMART, NetFlow Analyzer, FortiAnalyzer
Designed and maintained data center core, distribution, and access switches (Nexus N7K/N5K, Catalyst 6500/4500)
Managed Juniper routers/switches: SRX 3600/3400, EX4200â8200, QFX 5110/10008, MX104
Configured load balancers (F5 LTM/GTM, Cisco ACE) for application optimization
Led data center operations, integrating Active Directory, VMWare, Oracle, and Linux/Windows servers
Developed technical documentation: RFP, HLD, LLD, NIP, NMP, NRFU
Led IT projects for network upgrades, migration, and modernization
Provided mentoring and technical leadership for junior network engineers
Client: Juspay Technologies, India Mar 2016 to Nov 2018
NETWORK ENGINEER
Roles & Responsibilities:
Evaluated, tested, and recommended network infrastructure and security systems
Designed and implemented co-located network infrastructure and VoIP/data networks
Managed firewall configurations, documentation, and network policies
Monitored network performance and capacity; provided actionable reports
Conducted technical review and approval of network changes
Developed network policies, standards, and procedures for enterprise networks
Supported 12 corporate office networks with Cisco Catalyst & Juniper routers/firewalls
Designed and implemented multi-VRF security architecture
Supported residential CMTS network with 1000+ endpoints
Managed Juniper firewalls and Aruba wireless deployment (398 APs, 5 controllers)
Redesigned routing and switching architecture for 60+ buildings
Implemented QoS for VoIP and IP video surveillance
Managed Cisco NAC, SSL VPN, and campus network security
Developed incident response and data loss prevention programs
Provided information security awareness and compliance enforcement
Client: Probey Services, India Aug 2014- Feb 2016
NETWORK ENGINEER
Roles & Responsibilities:
Led enterprise WAN migration from Frame Relay to DMVPN over public networks
Designed, upgraded, and implemented network plans for all enterprise locations
Developed business continuity and disaster recovery plans
Migrated enterprise from CheckPoint firewalls to Cisco firewall modules
Negotiated telecom contracts, reducing annual cost by ~$350,000
Implemented centralized network management and alarm notification
Created network diagrams and documentation for architecture and DR/BC
Designed retail credit card authorization network reducing response times
Established internal SLAs for network performance and availability
Led retail systems LAN/WAN refresh for 235 stores
Implemented enterprise VoFR telephony, reducing long-distance costs
Developed customized POS/server appliances for remote events
Configured routing protocols (OSPF, BGP) and maintained lab networks
Administered LAN/WAN protocols: TCP/IP, DNS, DHCP, VLANs, VTP, STP
Delivered complete enterprise network design, installation, and troubleshooting
Environment: Cisco Switches and Routers, TCP/IP, DNS, DHCP.
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