Kannan S
Chennai
Summary
Driven by a passion for network security and infrastructure optimization, I leveraged my expertise at Cognizant Technology Solutions to enhance system integrity and reliability. My proficiency in Cisco switches and collaborative problem-solving skills led to significant network performance improvements. I excel in deploying cutting-edge security measures and fostering team efficiency, ensuring robust and secure network environments.
Overview
14
14
years of professional experience
1
1
Certification
Work History
Infra Technology Specialist
Cognizant Technology Solutions
Chennai
12.2017 - Current
- Developed and implemented network security policies, procedures and standards to ensure system integrity and reliability.
- Performed regular patch management activities including installation of critical patches and updates on all computers within the organization's domain.
- Provided technical support on network security issues related to hardware, software, operating systems, and applications.
- Configured routers and switches with ACLs, NAT and PAT, VLANs and VPNs to secure the network infrastructure.
- Provided technical support related to network security issues for end users.
- Installed and configured software updates, patches, and bug fixes as needed.
- Performed system maintenance by handling security verifications of systems and processes.
- Documented all changes made within the network environment for future reference.
- Conferred with network users about solutions to existing system problems.
- Developed and maintained security protocols to protect information systems from external attack.
- Diagnosed, troubleshot and resolved hardware and system problems.
- Managed encryption platforms and policies to preserve business data.
- Created user accounts and assigned access rights based on established security policies.
- Implemented firewalls, intrusion detection systems, and other network security measures to safeguard data.
- Planned, tested and supported high-availability infrastructures.
- Developed detailed incident response plans in case of an emergency situation.
- Configured routers, switches, VPNs, firewalls, and wireless networks according to organizational requirements.
- Analyzed network performance records to determine the need for repair or replacement.
- Monitored network traffic for suspicious activity and investigated any incidents that occurred.
Senior Network Administrator
RADIANT SYSTEMS LTD, Client Location: WIPRO Technologies Ltd.
Chennai
08.2017 - 12.2017
- Designed and maintained customer network infrastructure.
- Handled troubleshooting tasks for serious network faults impacting routers and switches.
- Collaborated on conference calls with technical teams and vendors to execute circuit upgrades remotely or onsite.
- Coordinated with FE to deploy routers, switches, and servers meeting established standards.
- Sent initial configurations to tech for device setup, verified device reachability, then configured devices remotely as per standard settings.
- Upgraded IOS versions and modified configurations on existing routers and switches based on requests.
- Executed site installation and relocation with precision.
IT Network Engineer
Tata Communications Transformation Service Ltd
Chennai
03.2011 - 08.2016
- Performed real-time troubleshooting of network issues with Telnet and other utilities.
- Executed design and implementation of network infrastructure inclusive of routers, switches.
- Hosted project onboarding sessions to synchronize team efforts with deployment timelines.
- Created designs for top-tier clients, including AT&T, Orange Business Services, and Verizon.
- Facilitated seamless transition in service delivery at every stage.
- Provided technical support and guidance to users and junior network engineers, enhancing team knowledge and efficiency.
- Managed Cisco routers, switches, firewalls and wireless access points.
- Updated firmware versions of all networking equipment's regularly in order to maintain optimum security standards.
- Conducted regular network performance tests and monitoring to ensure high availability and reliability.
- Evaluated local area network (LAN) and wide area network (WAN) performance data to verify availability and speed, identifying network problems.
- Analyzed traffic patterns across multiple networks and optimized them for improved performance.
- Troubleshot complex network issues, reducing downtime and improving user satisfaction.
- Performed system backups and disaster recovery operations.
- Resolved complex technical issues related to networking technologies such as DNS, DHCP, TCP and IP.
- Coordinated with vendors and service providers to ensure timely delivery and setup of network equipment and services.
- Replaced faulty or damaged network hardware components to improve performance.
- Configured routers, switches, firewalls and other hardware to deploy and manage LAN, WAN and wireless networks.
- Identified areas where additional bandwidth was needed by performing capacity planning activities.
- Monitored system performance to promote network speed, availability and reliability.
- Utilized network management tools for monitoring, configuration management, and issue resolution.
Education
Bachelor of Engineering - Electronics And Communication Engineering
Cape Institute of Technology
Tirunelveli05-2010
High School Diploma - Mathematics
S.M.S.M.Higher Secondary School
Suchindrum07-2006
Skills
- Cisco Switches: Catalyst 2960, 3560, 3650, 3750, 3850, 4500, 6500
- Nexus 9000 Series Knowledge
- Experience with Cisco 1900 to 4300 Series
- Proficient in Meraki Switches: M425, M-250
- Wireless: Cisco WLC
- Protocols: EIGRP, OSPF, BGP, STP, HSRP, VRRP, and GLBP
- Tools handled: Inflobox, IPAM, Men and Mice, Putty, Secure CRT, SolarWinds
- Microsoft DHCP, Cisco Meraki, Palo Alto Panorama
- Firewall: PA 200
Certification
- Cisco Certified Network Associate (CCNA)
- CCNP Switch (Cisco Certified Network Professional)
Languages
Tamil
First Language
English
Proficient (C2)
C2
Malayalam
Intermediate (B1)
B1
Timeline
Infra Technology Specialist
Cognizant Technology Solutions
12.2017 - Current
Senior Network Administrator
RADIANT SYSTEMS LTD, Client Location: WIPRO Technologies Ltd.
08.2017 - 12.2017
IT Network Engineer
Tata Communications Transformation Service Ltd
03.2011 - 08.2016
Bachelor of Engineering - Electronics And Communication Engineering
Cape Institute of Technology
High School Diploma - Mathematics
S.M.S.M.Higher Secondary School
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