Karthik Ponnaiah +1-848-***-****

adz68c@r.postjobfree.com

https://www.linkedin.com/in/karthi-k-8669bb27a/

10+ Years of Expertise in Banking Data Center and NOC

Highly accomplished networking and cloud engineering professional with 10+ years of experience in designing, deploying, migration ad supporting critical multi-site redundant network environments. Expert at leading complex multistage projects. Proven ability to manage all phases of installation, monitoring and administration. Outstanding mentoring skills and exceptional business communication skills.

WORK EXPERIENCE:

Citi

Network Lead(June 2017– May 2023)

Providing Network Architecture/design, planning, configuration.

Provide documentation, training and mentoring as well as hands-on leadership of major project throughout the development lifecycle from sketch to operations.

Daily troubleshooting and Configuration changes of network devices including Cisco Nexus Switches, Arista Switches, Juniper MX Series Routers and ASR routers.

Troubleshoot, Isolate/resolve issue on bridge calls for business affecting live production traffic in the event of outage, performance, or functionality issues. Provide Network Technical Support for Citibank’s global network and Clients.

Preparing Monthly/Weekly reports to determine and recommend the network efficiency for internal and client’s environment.

Training Internal peers in terms of network operations to avoid the risk of miscommunication.

Creating Yaml scripts to automate the manual efforts.

Having strong knowledge in linux while using cisco dnac,ansible tower.

Creating Projects on JIRA and explaining them to global leads in ECC. Engaging key stakeholders to accomplish the project tasks.

Troubleshooting Viptella SD-WAN,cisco sda,aci related issues.

Configured FortiManager,Fortianalyzer and Fortigate for sdwan.

Cofigured and troubleshooted Viptela SDwan / Vmanage/ vbond/vsmart/ vedge /cedge

On-Call troubleshooting during the user impact/MIM call.

Strong experience in Cisco DNA Center, Cisco wired and wireless technologies including traditional routing, switching and Cisco Software Defined Access.

Migration from Cisco firewalls to Palo Alto firewalls platforms PA -5000, series (5060/5050/5020), PA 4000 (4060/4050/4020) and PA 500 and PA- 200 firewalls.

Citi

Senior Network Infrastructure Engineer (Jul 2015-June 2017)

Troubleshoot, Isolate/resolve issue on bridge calls for business affecting live production traffic in the event of outage, performance, or functionality issues. Provide Network Technical Support for Citibank’s global network and Clients.

Daily troubleshooting and Configuration changes of network devices including Cisco IOS, Nexus Switches 2k,5k,7k,9k, Arista 7k switches, Juniper MX Series Routers and ASR routers.

Identify and assist in improving Network Infrastructure tools/services with automation.

(Python/TTL Scripting in pre/post checkouts of change record) and process enhancements

Work within established configuration and change management policies to ensure awareness and approval and success of changes made to the network infrastructure.

Prepare network diagrams and keep existing network diagrams up to date

Execution of standard operational processes which involve technology and client interfaces

Preparing Monthly/Weekly reports to determine and recommend the network efficiency for internal and client’s environment

Training Internal peers in terms of network operations to avoid the risk of miscommunication.

Daily/Weekly Call with Multiple key stakeholders to accomplish the new projects in our production environment.

Verifying the network diagram on daily basis and creating projects to update the diagram using MS visio tool.

Implementing Automation over production environment by using Ansible.

Communicating technical issues to non-technical key stakeholders through email/call.

Preparing Weekly/Monthly governance reports for production network team to represent for Senior Management.

Configured routers/switches to support dns/dhcp operations.

Configuring overlay tunnels using vxlan,evpn,mp-bgp.

Troubleshooting overlay issues on production environment.

Deployed new devices using cisco dnac.

Troubleshooting wired and wireless network performances using dnac dashboard.

Configured Access policies and added the new devices in the enterprise environment using DNAC.

Monitored the network performance using the DNAC dashboard.

Managed our device end information such as inventory,mac address, ip address, images,toplogy,vlan,routing information etc using DNAC.

detection systems.

Collaborated with the IT team to perform security incident analysis and incident response activities.

Participated in security incident investigations, root cause analysis, and remediation efforts.

Assisted in developing and improving security policies and procedures to align with industry best practices and regulatory requirements.

Designed and implemented scale-able and highly available network architectures for multiple data center projects, resulting in improved network performance and uptime.

Configured and maintained Cisco Nexus switches and routers, ensuring seamless connectivity and efficient data traffic management.

Collaborated with cross-functional teams to optimize network performance, troubleshoot complex issues, and implement timely solutions.

Having strong expertise in ITIL frameworks and engaged incident,problem,change management on daily production environment.

Teravault Private Limited

Network Engineer (Feb 2013 – Jul 2015) in Indian Bank Data Center

Design, Implement and Troubleshoot Cisco Routers, Switches, ASA Firewalls, Load Balancer, Wireless Access points/Controllers & Wan Optimization device models for several Clients

Deliver Remote/On-Off site and Telephonic Support for Client’s need on network issues

Site survey for gathering Customer requirements, Designing, and sizing the Devices

Maintaining IT policies and procedures across the client environment by performing periodic activities

Drafting monthly reports to determine and recommend the network efficiency for client’s environment.

Configuring Protocols such as OSPF, BGP, EIGRP in WAN, LAN, Cellular network .

Modifying the rules on cisco asa firewalls to add them in to firewall monitoring applications.

Engaged local tele communications like BSNL,Airtel, TATA.

Configuring cisco ios routers,switches for branches,ATM .

Configuring Vlan,Hsrp,intervlan routing on data center cisco devices .

ACADAMIC BACKGROUND:

PG Diploma in Business Analytics in ALLIANCE UNIVERSITY, Bangalore in the year 2020

Bachelor of Engineering in Information Technology in Sakthi Engineering College Anna University, Chennai in the year 2011

CERTIFICATIONS:

Certified CCNP Routing and Switching

Redhat Open stack Training

Splunk Training

ITIL Foundation Certified

Ansible

SD-WAN

AWS Solution Architect

Certified Microsoft Azure administrator (AZ-104)

Cisco ENCOR 350-401

CORE SKILLS:

OSPF, EIGRP, BGP, MP-BGP, RIP, Route Map,IGMP,PIM,DSCP,L2 and L3 MPLS,NTP,First-Hop Redundancy Protocol,NAT,GRE,IP Sec,DMVPN,GetVPN,LISP,VXLAN,Wireless:AP,WLC,F5 LTM and GTM,STP,RSTP,MST,VLAN,VTP,Ether channel bundles,Data Center: Nexus 3k,5k,7k,9k,Arista,SD-Access,DNA,SD-WAN,Python,Yaml,RESTCONF,NETCONF,EEM Applets,Wireshark and MS Visio, JIRA,Cisco Prime,Ansible Tower,Power BI, Grafana,Servicenow,Confluence,express routes,DNA,SDA,Citrix Netscaer,Cisco ISE,Wireless products,Azure network,VXLAN,EVPN,MP-BGP,power bi,hpna, ansible tower,smarts emc,remedy,sedona,grafana,net brain,stealthwatch,zscaler,DNS,DHCP,MPLS,Segment routing,DHCP,DNS infoblox,DNS Bind,solarwinds,cisco firepower,Penetration Testing Tools Nmap, Metasploit, Burp Suite,Incident Response and Forensics,Security Policy Development and Compliance

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