Nandha Kumar Venkatesan

PROJECT : CELEBRUS ( CLOUD PROVISION AND DEPLOYMENT )

• Implemented CI/CD pipelines using Jenkins, GitLab, and Docker, reducing deployment time by 50% and increasing overall productivity.
• Managed and maintained Kubernetes clusters for container orchestration, ensuring high availability and scalability of applications.
• Collaborated with development and QA teams to automate testing and deployment processes, resulting in a 30% reduction in manual intervention.
• Worked with development teams to create a streamlined pipeline for continuous delivery.
• Utilized Terraform to create infrastructure as code, allowing for easy and repeatable deployment of resources.
• Configured Jenkins to automatically build and deploy code changes to AWS.
• Created and maintained AWS infrastructure, including EC2 instances, load balancers, and databases.
• Utilized Terraform and AWS CloudFormation for infrastructure-as-code (IAC) management, streamlining infrastructure provisioning and reducing configuration errors.
• Monitored application performance and system health using tools like Prometheus, Grafana, and ELK Stack, proactively addressing issues and minimizing downtime.
• Developed custom scripts and tools using Python and Bash to automate routine tasks and improve overall efficiency.
• Ensured security and compliance by implementing best practices, such as regular patching, vulnerability scanning, and access control management.
• Supported the management of AWS infrastructure, including EC2, S3, RDS, and VPC, ensuring optimal performance and cost efficiency.
• Participated in the migration of applications to a containerized environment using Docker, improving scalability and resource utilization.
• Collaborated with cross-functional teams to troubleshoot and resolve production issues, minimizing downtime and improving customer satisfaction.
• Maintained documentation for DevOps processes, tools, and best practices, facilitating knowledge sharing and onboarding of new team members.

PROJECT: CITI BANK ( INFRASTRUCTURE )

• Design and implement the tools and processes used for deployment and change management
• Plan and execute configuration management and disaster recovery drills
• Own, maintain, and continuously improve all systems provided as a service, such as monitoring and datastores
• Also engage in service capacity planning and demand forecasting, anticipating performance bottlenecks
• Automate resource provisioning and allocation process as well
• Deployed and implemented SAS grid servers for CITI Bank cloud infrastructure
• Worked on CITI PuppetServer Migration work and upgraded software to next available version
• Worked on CITI COB Failover activity for continuous 2 years with much improved and stable methodology
• Automating patches , upgrades , commissioning of servers on network using puppet Enterprise
• Manage L2,L3 support teams and provide(L4 support ) in-depth analysis of issues across our infrastructure
• Deliver automation of current patching process, to support the migration of workload away from the current infrastructure teams
• Actively participate in the OS security fixes and system upgrade across infrastructure
• Maintain services in production environments by measuring and monitoring availability, latency, and overall system health
• Configuring and Managing NFS filesystems exports shared across Linux Infrastructure
• Regularly Working on critical incidents and provide RCA on resolving the issues
• Actively participating on new Linux server builds and configuration implementation
• Ensure Availability and Performance of Production/COB/UAT/Dev Services across CITI infrastructure

PROJECT : TOSHIBA WEB APPLICATION SUPPORT

• Manage JBOSS Application running behind Broadcom Web Application Firewall & Reverse Proxy servers
• Setup Apache Reverse Proxy to ensure traffic pass through proxy Loadbalacing , manage web traffic to backend application servers
• Configure WAF virtual servers , pools & create traffic rules to manage web traffic before delivering to backend application servers
• Actively working on P1 incidents reported by Direct customers and B2B customers
• Part of Security incident Team - Provide work plan in identifying vulnerability attacks and implement patches during patching cycle
• Monitor Linux servers health checks and process management using tools like zabbix , Xymon
• PROJECT : TOYOTA AWS SUPPORT
• Worked on AWS Cloud infrastructure (EC2, S3 , EBS , RDS, ELB )
• Experience writing bash scripting and debugging python/perl scripting
• Worked on Ubunt Servers OS upgrade and apache deployments across AWS servers
• Deploy configurations and manage applications using CI/CD tools like ( puppet , GIT,Jenkins ) .

• Drive improvements in operational excellence and focus on improving operational tools used in production environment
• Strong engagement with the India, US and Asiapac based global network engineering teams
• Diagnose and investigate unique and complex systemic problems and application service failures
• Troubleshoot issues across the entire stack – hardware, software, application and network
• Managing the applications by handling the issues and do the necessary configuration changes
• Drive service performance analysis and tuning, service capacity planning and demand forecasting
• Perform systems administration activities to ensure the smooth operation of applications across multiple platforms Coordinate and communicate with impacted stakeholders as per incident management process
• Triaging and resolving service / application outages for Symantec ESS
• Scripting experience in actively writing/modifying code to improve monitoring and automation (Perl, Python,
• Shell, etc.) for day-to-day activates and repetitive tasks
• Creating and auditing run books/knowledge base for troubleshooting and supporting applications
• Lead maintenance planning activities which impact production applications
• Providing level 2 support for Symantec Products like Email gateway , Webservices , Integrated Spam managers , hosted platforms
• Doing process improvements, automation, ensuring of SLA's, analyzing and implementing various monitoring tools
• Incident management for all the supported products and services over the different time zones across regions
• Lead maintenance planning activities which impact production applications
• Working as an integration lead for onboarding properties to Tier 2 team
• Comfortable in troubleshooting and opting solution with substantial experience in end-to-end ownership of issues and execution of small/medium size projects

• Make suggestions on designing the network that suit organization's requirements with the help of various computer designing applications
• Propose different methods in updating hardware components of network and server and make it more user- friendly
• Assist in the integration, installation and evaluation process of products and systems
• Also, give suggestions regarding its utility
• Ensure uninterrupted connectivity and smooth flow of information within the organization and outside and report any shortcomings

• System Administration of Linux (Red Hat Enterprise Linux)
• Managing E-Mail Server, Proxy Server, DNS Server, File Server and Firewall
• Upgraded the Linux Servers from EL4 to EL5 for most of the clients
• Configuring the Routers and NATING to the server for some of ports according to the needs
• Adding static routes in the servers to connect the branch offices using WAN setup
• Configuring Virtual Host, SSL Certificate Settings in Apache Web Server
• Configuring NFS,LDAP, AutoFS, Samba, Squid and DNS on Linux Environment
• Performing routine task such as adding, modifying and deleting user accounts using command line, checking log files and monitoring system process on Linux Servers
• Providing the security to the system by restricting root access, controlling remote access, ftp users, su attempts and setting file permissions to the user
• Configuring Auto copy the mail server backup, configuration files and users mail box from server to Windows
• Machines
• Experienced in Writing Bash Shells Script to Automate the Installation and Configuration process of various services and backup
• Configured Standard proxy for the clients
• Checking file system consistencies and trouble shooted by using fsck and monitoring file system usage by using DF and du commands
• Creating and modified swap space in online using commands in Linux servers
• Configuring DNS Servers and DNS clients
• Writing shell scripts for system administration tasks such as monitoring file system size, CPU, Memory, Mail queue and network performance and generation of daily system report.

• Develop and maintain LAN/WAN, Internet, and wireless communication networks
• Install, configure, administer, and troubleshoot operating systems in desktop environment
• Plan and implement networks using hubs, routers, switches and other networking hardware and software.