Ramesh Sai Chandrasekaran

This is Ramesh recently moved to UK in a 5 year dependent skilled worker visa which has validity till Feb 2028

I have 4+ years of working experience on Linux administration domain and good knowledge in DevOps with few months hands on experience

Engineer 2 - Engineering Operations, Comcast India Pvt Ltd. (Worked in Both Linux & Devops Team)
Key Responsibilities:

•Managed and maintained 500+ Linux servers across multiple data centers. •Deployed and configured Linux servers and virtual machines using VMware and VirtualBox.
•Performed routine server maintenance, such as software updates and security patches.

•Implemented backup and recovery solutions to ensure server availability and data protection.
•Proficient in Ansible for automation and configuration management.
•Strong understanding of YAML syntax for creating Ansible playbooks. •Designed and implemented Ansible playbooks to automate infrastructure provisioning and configuration tasks.

•Provided technical support to users and troubleshooted issues.
•Developed and maintained shell scripting for automating system tasks. •Collaborated with cross-functional teams to ensure server availability and performance.
•Administered Linux servers and workstations, including installation, configuration, and maintenance of both Physical and VM servers. •Troubleshoot and resolved hardware and software issues on Linux systems. •Provided technical support to users and performed user administration tasks.

SR. Linux system Administrator ( Western Union - Banking ),

Cognizant Technology Solutions.

Key Responsibilities:

•Linux system administration and configuration ( Redhat - RHEL, CentOS, Oracle Linux, AIX).
•Users and Group management.
•File systems and logical volume management.

•Disk Management.
•Server build experience in VMware.
•Mitigating the vulnerability reported servers by Linux patching activity on every quarter.
•Working on various consoles like UCS Cisco, Dell, HP, Oracle PCA & VMWare.
•Developed and Maintained shell scripting and ansible playbook for automating system tasks.
•Raising hardware and software cases and following up with vendors to fix issues.
•Strong knowledge in change management process.
•Providing overall support and maintenance of operating systems and network connectivity for Linux systems.
•Monitoring system performance on a daily basis to ensure adequate response times for production applications.
•Using performance monitoring tools like (TOP, SAR, OSwatcher, TOPAS, NMON, IOSTAT, VMSTAT, NETSTAT).
•Setting up password-less authentication in Linux.
•Problem determination, coordinating, and replacing hardware components with vendors like IBM/Oracle/CISCO/HP/Dell.
•Scheduling backups using CRONTAB.
•Restoration of files and directories, both incremental and full.
•Coordinating with different INFRA & APP teams for maintenance activities like Hardware replacement, software updates, and security patches.
•Basic knowledge in Active Directory User and group management in Centrify.
•Maintaining and monitoring network services, such as DNS, DHCP, VPN and system dump.
•Collecting server logs via SOS reports and capturing network logs using TCP dump for thorough system diagnostics and troubleshooting.

Training Knowledge in AWS Concepts

* Solid understanding of user identity management, AWS permissions, and cloud security practices. * Proficient in provisioning, operating, and maintaining systems using AWS (Amazon Web Services). * Theoretical knowledge of key AWS services including Amazon VPC, EC2, IAM, Route 53, RDS, ELB, ECR, and S3.

* Demonstrated knowledge of Amazon Virtual Private Cloud (VPC) for network isolation and architecture.
* Understanding of Amazon Elastic Compute Cloud (EC2) for scalable virtual server instances. * Theoretical grasp of AWS Identity and Access Management (IAM) and security policies.

* Understanding of Elastic Load Balancers (ELB) for distributing incoming application traffic. * Awareness of Elastic Container Registry (ECR) for Docker container image storage.
* Solid knowledge of Simple Storage Service (S3) for object storage in the cloud.

Education

Master of Technology in Computing Systems and Infrastructure,

Birla Institute of Technology and science

2022 Jan – 2023 Dec chennai, India