• Implemented automated build and deployment process for applications and re-engineering set up for better user experience and leading up to building a continuous integration system.• Developed and implemented Software Release Management strategies for various applications according to the Agile process.• Setup and build AWS infrastructure various resources, VPC EC2, S3, IAM, EBS, Security Group, Autoscaling, and RDS in Cloud Formation JSON templates.• Responsible for Continuous Integration (CI) and Continuous Delivery (CD) process implementation using Jenkins along with Shell scripts to automate routine jobs.• Configured yum repository server using Chef on RHEL 5/6.x in VMware environment. Implemented active directory using LDAP services and used in conjunction with PAM (pluggable Authentication Module).• Written Terraform templates, Chef cookbooks pushed them onto Chef for configuring EC2 Instances and Solved Gateway time issue on ELB and moved all the logs to S3 Bucket by using Terraform.• Used Chef as configuration management tool and created Chef Cookbooks using custom recipes to automate system operations. • Designed puppet modules to manage configurations and automate install process.• Played a key role in automating the deployments on AWS using GitHub, Ansible and Jenkins.• Created and updated Bash scripts and modules, files, and packages.• Wrote Puppet manifests for deployment and configurations and deployed PuppetDB • Configuring S3 versioning and lifecycle policies to store data and thereby archiving files through Glacier.• Performed Branching, Tagging, Release Activities on Version Control Tools: GIT, GITHUB and GITLAB.• Developed shell scripts for automation of the build and release process, developed Custom Scripts to monitor repositories, Server storage.• Deployed and configured Elastic search, Log stash and Kibana (ELK) for log analytics, full text search, application monitoring in integration with AWS Lambda and Cloud Watch.

• Planning, Implementation, Installation and configuration of Operating System upgrade on Red Hat Linux 5.x/6.x & 7, AIX 6,7 servers, SUSE 11 servers.• Administration/Configuration of Print Servers/Clients in the Network, planning, configuration and maintenance of connectivity for servers as well TCP/IP configuration.• Performed server backups and data restores.• Utilized Linux Terminal Server for removing fat client management, save on administration and provide users with a more reliable & secure environment.• Created multiple subnets within the private network and allowed network flow between them.• Created different file systems such as xfs, ext3, ext4 and (NFS) network file systems and configured (ACL) access control lists, encryption and permissions.• Managed local and centralized authentication (LDAP) for users and groups.• Responsible for firewall management and SElinux configuration.• Continually updated personal knowledge of computing hardware operating systems and software.• Worked on RAID creation and maintained redundancy.• Building up and maintenance of Hardware and Network connections from scratch.• Performed disk management operations with the help of Logical Volume Manager.• Performed Tuning of system using SAR, VMstat, IOstat and Mpstat.• Installed and configured Oracle 11g on Linux servers.• Managed Red Hat Linux user accounts, groups, directories and file permissions

• Installed and administration of windows and Linux (Centos, Ubuntu, and Red hat) servers.• Troubleshooting booting related issues, creating boot records, working with system maintenance mode, recovering root password, fixing booting related issues, working with boot list.• Created Bash, shell scripts for various Systems Administration tasks to automate repeated processes.• Involved in Installing and configuring Centos & SUSE servers on HP x86 servers.• Administration and support of Unix Servers including SUSE, Solaris, HP-UX & Red Hat Linux, and CentOS.• Release / Change Management interface through the staging phase, during and after full implementation of system software up-gradation including database and website applications.• Creating and maintaining users, profiles, security, rights, disk space and process monitoring.• User account management, worked with shell scripting (ksh, bash) to automate administration tasks.• Creating, maintaining, and removing users and groups. Security settings on user accounts and groups. Working on System Management Services SMS and changing boot list order etc., • Installation, Configuration, Maintenance of DNS/DHCP/NFS/SMB/LDAP Servers, Design and Configuration of Active Directory, Domain Controllers (Primary and Backup), Organizational Units, Sites and Domains, Group Policies, Users and Groups, Permissions, Profiles and Logon Scripts, Home Directories, Implement Backup & Restore Policies, Print Servers.• Setup cronjobs schedules for various backup and monitoring tasks & supported with enterprise backups using Veritas NetBackup.• RPM package installation & upgrade released by RedHat from repository.