SUMMARY

• Certified AWS Solutions Architect, Developer - Associate and have Basic Chef Fluency Badge with over 8+ years of professional IT experience, Energetic and Passionate Cloud and DevOps professional, solid experience in Build & Release Engineering with Continuous Integration, Software Engineering/Development, Database administration, Windows and Linux system administration.
• Experience in working with AWS services like EC2, ELB, Auto Scaling, VPC, Route53, RDS, S3, IAM, SNS, SQS, DynamoDB, Elastic search, Beanstalk, Elastic Filesystem (EFS), CloudWatch, CloudTrail, CloudFront, Lambda, Service Catalog, Kinesis, Redshift Cluster, ECS, OpsWorks and Cloud Security (OAuth2 and SAML), good knowledge on Amazon kinesis firehose and AWS JAVA SDK in a scalable production environment.
• Designed AWSCloud Formation templates to create custom sized VPC, Subnets, and NAT to ensure successful deployment of Web applications, database templates and expertise in architecting secure VPC solutions in AWS with the help of Network ACLs, Security groups, public and private network configurations.
• Experience in Microsoft Azure which includes creating PaaS builds, PaaS deployments, Storage-Accounts, Queues, CDN, ARM templates, Azure Service Bus.
• Experience in various Azure services like Compute (Web Roles, Worker Roles), Azure Websites, Caching, SQL Azure, NoSQL, Storage, Network services, Azure Active Directory, API Management, Scheduling, Microsoft IIS, Auto Scaling and PowerShell Automation.
• Experience in Designing Azure Resource Manager (ARM) templates and extensive experience in designing custom build steps using PowerShell.
• Strong Knowledge in Cloud Computing Engineering, concepts and service models including IaaS-OpenStack, PaaS-Pivotal Cloud Foundry (PCF) and SaaS-VMware.
• Hands-on experience in building the OpenStack cloud platform components like Nova-Compute, Neutron-Networking, Swift-Object Storage, Glance- Image Service, Cinder-Block Storage, Horizon- Dashboard and Keystone-Identity Service and so forth.
• Ensured successful architecture and deployment of enterprise-grade PaaS solutions using Pivotal Cloud Foundry (PCF) as well as proper operation during the initial application migration.
• Played a key role in automating the deployments on AWS using GitHub, Terraform, Puppet, Chef, and Jenkins.
• Production experience in large environments using configuration management tools Chef, Ansible, and Puppet supporting Chef Environment and involved in developing manifests. Developed Chef Cookbooks to manage systems configuration.
• Extensively worked on Chef Roles, Cookbooks, Recipes, Templates, Resources, Attributes & Data bags. Proficient in the setup of Chef servers, workstations & bootstrapping infrastructure Chef nodes for configuration management.
• Extensively worked on Ansible Playbooks, Inventory files, Vault feature to configure the servers, deploy software, encryption of data file & orchestrate continuous deployments or zero downtime rolling updates. Worked on Ansible Tower which provides an easy-to-use dashboard, & role-based access control.
• Implemented Puppet agent based & agentless configurations, Puppet dashboards, MCollective with active MQ server, plugin-sync, stored configs, Hiera, Facter and wrote Puppet manifests.
• Good Understanding and implementation experience of CI/CD pipelines using Jenkins, automation programmatically by creating Jenkins jobs and pipelines and solving various problems with ANT, Maven, and Gradle as plugins.
• Extensively Used Jenkins as Continuous Integration tools to deploy the Spring Boot Microservices to Pivotal Cloud Foundry (PCF) using build pack.
• Installed, configured and managed the RDBMS databases like MySQL, DB2, PostgreSQL, and NoSQL databases like MongoDB, DynamoDB, and Cassandra DB.
• Integrated Jenkins with DevOps tools like SonarQube to get the better quality of the Source code.
• Automated the applications and databases like MYSQL, NoSQL container deployment in Docker using Python and monitored those containers using Splunk.
• Configured the XL Deploy and XL Release for all the applications from scratch, once the build package is available, then promoted with simple enable options to deploy in the targeted servers.
• Experience with installation and configuration of Docker environment including Docker registry hub for managing different Docker images and deployment of applications inside the software containers.
• Having good implementation experience with installation and configuration of Kubernetes, clustering them and managed local deployments in Kubernetes.
• Monitored the servers using tools like New Relic and Nagios and providing 24x7 on-call support on rotation basis. Debugged and solved complex Splunk Integration challenges and Splunk configuration issues.
• Experience with Version Control Systems like GIT, CVS, SVN (Subversion), and good understanding of other tools like Bitbucket, Perforce, TFS and IBM Bluemix.
• Worked with Application Performance Monitoring (APM) tools like AppDynamics for monitoring JAVA, .NET and PHP applications along with New Relic for monitoring performance like browser and for tracking issues in SQL statements.
• Strong experience in using Build Automation tools like ANT, Maven, Gradle and hands-on experience with other build tools like MSBuild Makefile.
• Built and managed centralized application logging stack using Elasticsearch and Log stash (ELK) deployed through puppet.
• Expertise in configuring the monitoring and alerting tools according to the requirement like AWS Cloud Watch, AWS CloudTrail, Dynatrace, Nagios, Splunk Enterprise, SNMP monitoring for the VPN connections.
• Exposed to all aspects of Software Development Life Cycle (SDLC) such as Analysis, Design, Implementation, and Testing.
• Managed more than 800 virtual servers and monitored Applications and Servers through Splunk, Web Servers Administration on Apache and Nginx.
• Experienced in Installation, Support, Configuration, Red Hat Enterprise Linux(RHEL) 4.x, 5.x, 6.x, 7.x, Oracle Enterprise Linux (OEL) 5.x, 6.x, SUSE Enterprise Linux Server 10, 11, SOLARIS 9, 10, CentOS 6.x,7.0 and UBUNTU 10, 12, & 14 LTS.

TECHNICAL SKILLS

Cloud Platforms: AWS, Azure, OpenStack, Pivotal Cloud Foundry (PCF).

Database Systems: Cassandra DB, OracleDB, MSSQL, MySQL, MongoDB, AWS RDS, DynamoDB.

Automation Tools: Chef, Puppet, Ansible, Jenkins, Vagrant, Terraform, Kickstart, Jumpstart, Opsworks

Version Control tools: GIT, Subversion, Bitbucket, Gerrit, ClearCase

Web Servers: Tomcat, Apache 2.x, 3.x, JBOSS 4.x/5.x, WebLogic (8/9/10), WebSphere4/5, Team Foundation Server (TFS), Nginx, Azure, IIS

Networking/Protocol: TCP/IP, NIS, NFS, DNS, DHCP, Cisco Routers/Switches, WAN, SMTP, LAN, FTP/TFTP, Juniper.

Scripting/Languages: Perl, Python, Ruby, Bash/Shell Scripting, PowerShell, Java, YAML, PHP, JSON

Virtualization Technologies: VMWare ESX/ESXi, Windows Hyper-V, Power VM, Virtual box, Citrix Xen

Application Servers: Web Logic Application Server 9.x, 10.x, Apache Tomcat 5.x/7.x, Red Hat JBoss 4.22

Volume manager: VERITAS volume manager (VVM), Logical Volume Manager (LVM) with Linux

Monitoring Tools: New Relic, AppDynamics, ElasticSearch, LogStash, and Kibana (ELK), CloudWatch, CloudTrial, Splunk, Nagios

Operating system: Linux (Red Hat 4/5/6/7, CENTOS & SUSE), Solaris 11/10/9/8, HP-UX 11.0, 11.11, 11.23, 11.31, V1, V2 & V3, Ubuntu 12/13/14, Windows 2008, 2010, 2012, DEBIAN.

PROFESSIONAL EXPERIENCE

Confidential - Pittsburg, PA

Sr. Cloud/DevOps Engineer

Responsibilities:

• Experience in core AWS services (S3, EC2, ELB, EBS, Route53, VPC, auto scaling etc.), deployment services (OpsWorks and CloudFormation) and security practices (IAM, CloudWatch and CloudTrail).
• Leveraged AWS Cloud services such as EC2, IAM, auto-scaling, load balancing to build secure, highly scalable and flexible VPC that handled expected and unexpected load bursts.
• On boarded and migrated test and staging use cases for applications to AWS cloud with Public and Private IP ranges to increase development productivity by reducing test-run times.
• Created alarms and triggers in CloudWatchbased on thresholds and monitored the server's performance, CPU Utilization, Disk usage and Utilized AWS CloudWatch services to monitor the environment for operational & performance metrics during load testing.
• Implemented migrations and orchestrated large-scale Infrastructure from on-premises to AWS Cloud using Terraform and Cloud Formation templates.
• Worked in providing Software as a Service (SaaS) using OpenStack by providing Mediawiki as a tool to Organization and made backup scripts for storing the configuration of all OpenStack services.
• Used OpenStack and AWS cloudservices to launch Linux and Windows machines created security groups and written basic PowerShell scripts to take backups and mount network shared drives.
• Automated deployment of ELK (Elasticsearch-LogStash-Kibana) stack with Ansible on AWS and OpenStack cloud platforms.
• Implemented a centralized logging system using log stash configured as an ELK stack (Elasticsearch, Log stash, and Kibana) to monitor system logs, AWS CloudWatch, VPC Flow Logs, CloudTrail Events, changes in S3 bucket.
• Involved in setting up builds using CHEF as a configuration management tool and managed the configurations of more than 90 servers.
• Installed and used Chef Enterprise Server on premise, workstation and bootstrapped the nodes using knife and automated by writing Chef Recipes and Cookbooks with test-kitchen/chef spec.
• Automate Deployment using configuration Management tool like OpsWorks - Chef to provision Amazon AWS Instances to enable continuous Deployments.
• Maintained Chef and Ansible servers and managed application that can use ServiceNow data to bring computers into the desired state by managing files, services, or packages installed on physical or virtual machines using Ruby and Python scripts.
• Created customized Docker images and Installed Docker-Registry for upload and download of Docker images, worked on Docker-Compose,Docker-Swarm.
• Developed CI/CD system with Jenkins on Kubernetes container environment, utilized Kubernetes and Docker for the runtime environment for the CI/CD system to build, test and deploy.
• Experience in setting up the complete pipeline as a code, between Git (Hub/Lab) to Jenkins to Artifactory to XL Deploy.
• Responsible for CI/CD process implementation using Jenkins integrated with Gradle along with Python and Shell scripts to automate routine jobs
• Used Minikube to manage local deployments in Kubernetes, create a local cluster and deployed application containers.
• Configured SPLUNK Alerts and created Dashboards for Monitoring and utilized SonarQube for code quality analysis i.e.., to find the list of issues from various components like project, module, file.
• Involved in SCRUM ceremonies (stand-up, grooming, planning, demo/review and retrospective) with the teams to ensure successful project forecasting and realistic commitments.
• Coordinate and assist developers with establishing and applying appropriate branching, naming conventions using GIT source control.
• Involved in Linux/Unix system administration, System builds, installations, upgrades, Patches, Migration, Troubleshooting on CentOS 7. Scheduled CRON jobs using SSH and bash scripts on production servers.
• Provide Linux system administration support during deployment operations through launch and configuring instances in a Cloud Computing Environment using Amazon Web Services.

Environment: AWS, OpenStack, Jenkins, Chef, Ansible, Docker, Kubernetes, Git, Terraform, Python, Ruby, Bash, Cloud Formation, ELK, Splunk, SonarQube, Windows, CentOS 7.

Confidential - Philadelphia, PA

Sr. Cloud/DevOps Engineer

Responsibilities:

• Highly motivated and committed Cloud and DevOps Engineerexperienced in Automating, Configuring and deploying instances on AWS, Azure cloud environments, and Datacenters.
• Involved in designing and deploying a multitude of applications utilizing almost all the AWS stack including EC2, Route53, S3, RDS, ELB, VPC, Dynamo DB, ECS, SNS, Elastic Beanstalk, SQS, LAMBDA, REDSHIFT, focusing on high-availability, fault tolerance and auto-scaling in AWS using CloudFormation.
• Supported AWS cloud environment with 200+ AWS instances, configured Elastic IP & Elastic Storage and experience in implementing Security groups and Network ACLs.
• Configured AWS Identity and Access Management (IAM), created Groups and Users for improved login authentication. Provided policies to groups using policy generator and set different permissions based on the requirement along with providing Amazon Resource Name (ARN).
• Experience in implementing Data warehouse solutions in AWS Redshift, worked on various projects to migrate data from different database to AWS Redshift, RDS, ELB, EMR, Dynamo DB and S3.
• Implemented AWS Code Pipeline and Created Cloud formation JSON templates in Terraform for Infrastructure as a code.
• Written Templates for AWS infrastructure as a code using Terraform to build staging and production environments. Deployed the build artifacts into environments like DEV, UAT & Production according to the build lifecycle.
• Experience in dealing with Windows Azure IaaS - Virtual Networks, Virtual Machines, Cloud Services, Resource Groups, Express Route, Traffic Manager, VPN, Load Balancing, Application Gateways, Auto-Scaling.
• Worked directly with Azure Product team in tracking and resolving defects in the beta Azure IaaS offering.
• Design and Implemented Windows Communication Foundation (WCF) service layer hosted on Windows Azure. This layer is the middle tier between SQL Azure and SharePoint online external content.
• Managed internal deployments of monitoring and alarm services for the Azure Infrastructure (OMS).
• Installed and used Chef Server Enterprise on on-premise, workstation and bootstrapped the nodes using a knife command and automated by writing Ruby scripts in Chef Recipes and Cookbooks with test-kitchen/chef spec.
• Written Chef Cookbooks, recipes using Ruby to automate the installation of Middleware Infrastructure like Apache Tomcat, JDK, and configuration tasks for new environments.
• Developed and implemented Infrastructure Automation using Opscode Chef and create a deployment strategy for various locations worldwide.
• Using Chef, deployed and configured ElasticSearch, LogStash, and Kibana (ELK) for log analytics, full-text search, application monitoring in integration with AWS Lambda and Cloud Watch.
• Used Ansible Tower, which provides an easy-to-use dashboard and role-based access control, so that it's easier to allow individual teams to access to use Ansible for their deployments.
• UsedAnsibleto manage Web applications, environment configuration files, Users, Mount points, and Packages.
• Responsible for managing and maintaining the DevOps CD/CI pipeline using DevOps suite which includes Continuous Integration of GitLab, Jenkins, JFrog Artifactory and XL Deploy
• Deploying the applications using Jenkins server and troubleshoot build & release job failures and resolved, worked with a group of engineerson the resolution.
• Developed New Relic APMs for various applications and monitors like ping, scripted browser and API Tests using synthetics for custom APIs that alert operations channels on Slack.
• Integrated Ant and Maven with Jenkins to run, to automate the build process as a part of the continuous delivery.
• Integrating Defect tracking tool JIRA with Confluence and Jenkins CI server for identifying, logging, tracking and documenting defects/issues in real-time.
• Focused on containerization and immutable infrastructure. Docker has been core to this experience, along with Mesos, Marathon, and Kubernetes.
• Coordinate and assist developers with establishing and applying appropriate branching, labeling/naming conventions using GIT source control analyzed and resolved conflicts related to merging of source code for GIT.
• Worked on Deployment Automation of all microservices to pull the image from private Docker registry and deploy it on Kubernetes Cluster.
• Integrated Kubernetes with network, storage, and security to provide comprehensive infrastructure and orchestrated container across multiple hosts.
• CreatedDockerimages using a Docker file. Worked onDockercontainer snapshots, removing images and managingdockervolumes and experienced withDockercontainer service.
• Working on a variety of Unix platforms RHEL 5.x/6.x/7, which includes installation, configuring and maintenance of applications for prod/stage/dev environments.
• Installation, Configuration, and Maintenance of Virtual Machines, VMware ESXi 5.0/5.5 Host Server, vSphere Suite with P2P and P2V.
• Installed/configured/maintained/administrated the network servers like DNS, NIS, NFS, Send mail and application servers like Apache, JBoss, WebLogic, Oracle E-business suite and Samba on Linux.
• Migrate IaaS, PaaS and SaaS instances between public and private clouds - Apache, RDBMS, Unix/Linux, NAS/SAN, LAN/WAN VPN, Security, IDS, Firewalls, and Encryption.

Environment: RedHat Linux 7.x, CentOS 5.x/6.x/7, AWS, Azure, Elasticsearch, Log Stash and Kibana (ELK), Terraform, Chef, Ansible, ServiceNow, Jenkins, Ant, Maven, GIT, Ruby, PowerShell, Jira, Python, Oracle, WebLogic, Apache Tomcat, New Relic, Docker, Kubernetes, Apache HTTP server, Nginx, LDAP, JDK1.7, XML.

Confidential - Houston, TX

AWS/DevOps Engineer

Responsibilities:

• Extensively worked and implemented Hybrid cloud environment with AWS and Pivotal Cloud Foundry (PCF).
• Experience on AWS cloud services like EC2, S3, RDS, ELB, EBS, Elastic Beanstalk, ECS, VPC, Route53, Auto-scaling groups, CloudWatch, CloudFront, IAM for Installing, configuring and troubleshooting on various Amazon Images for server migration from physical to the cloud.
• Used AWS Cloud Formation templates to create custom sized EC2 instances, VPC, subnets, NAT, ELB and Security groups.
• Worked on CloudFront to deliver content from AWS edge locations to users, allowing for further reduction of load on front-end servers.
• Created alarms and trigger points in CloudWatchbased on thresholds and monitored the server's performance, CPU Utilization, disk usage and Utilized AWS CloudWatch services to monitor the environment for operational & performance metrics during load testing.
• Created Python scripts to totally automate AWS services which includes web servers, ELB, CloudFront distribution, EC2, database, security groups, S3 bucket and application configuration, this script creates stacks, single servers, or joins web servers to stacks.
• Good understanding of Pivotal Cloud Foundry(PCF) Architecture (Diego Architecture), PCF components and their functionalities Experienced in using Pivotal Cloud Foundry (PCF) CLI for deploying applications and other CF management activities.
• Deployed and managed Pivotal Cloud Foundry (PCF) environment across development, testing and production environments.
• Installed Pivotal Cloud Foundry (PCF) on EC2 to manage the containers created by PCF. Used Docker to virtualize deployment containers and push the code to EC2 cloud using PCF.
• Installed Jenkins and perform troubleshooting during installation to implement the CI process for the Java based application builds.
• Implemented continuous integration webhooks and workflows around Jenkins to automate the dev, test deploy workflow around Puppetcodebase.
• Installing and configuration of an automated tool Puppet that included installation and configuration of Puppet Master, Agent nodes, and an admin control workstation.
• Integrated Splunk with AWS deployment using puppetto collect data from all EC2 systems into Splunk and Used Atlassian Jira for Bug tracking, issue tracking, and Project management.
• Extensively involved in maintaining large amounts of structured, semi-structured and unstructured data across multiple Data centers and Cloud using Cassandra.
• Involved in creating Jenkins pipeline jobs for Puppet release process for module deployment, using Kanban AGILE methodology for puppet development.
• Created Ansible Playbooks and Puppet Manifests to provision Apache Web servers, Tomcat servers, Nginx, Apache Spark and other applications.
• Manage AWS EC2 instances utilizing Auto Scaling, Elastic Load Balancing and Glacier for our QA and UAT environments as well as infrastructure servers for GIT/Bitbucket and Puppet.
• Building/Maintaining Docker container clusters managed by Kubernetes, Linux, Bash, GIT, Docker, on GCP. Utilized Kubernetes and Docker for the runtime environment of the CI/CD system to build, test deploy.
• Using Kubernetes, I have controlled and automated application deployments and updates and orchestrated deployment.
• Automated applications and MySQL container deployment in Docker using Python and monitor them using Nagios.
• Installed and configured build manager and agents to queue builds in TFS and Created groups/users and defined user permissions for the projects in TFS.
• Involved in installing, configuring and administration of RedHat Linux 4.x, 5.x/6 servers by using Kickstart and Jump Start and supported various applications running on them.
• Worked in the AGILE Methodologies with 3week sprint cycle, used ServiceNow for SDLC management
• Maintained build related scripts developed in the shell for Maven builds. Created and modified build configuration files including POM.xml.

Environment: Linux (RHEL 4.x/5.x/6.x/7), AWS, PCF, Puppet, Ansible, Jenkins, ServiceNow, Bash, Python, Docker, Kubernetes, Splunk, WebLogic, WebSphere, Apache Tomcat servers, Nginx, Jira, Shell Scripting, Python, PowerShell, Git/Bitbucket, Maven.

Confidential - Phoenix, AZ

DevOps Engineer

Responsibilities:

• Administered large-scale server environments consisting of over 800 RHEL 5/6 VMWare VMs running multiple technologies including Apache, JBoss, Memcached, MySQL, Postfix, ActiveMQ, Python.
• Performing configuration management tasks on 150+ servers with the aid of Puppet Master Server and involved in writing Puppet manifests for customized configuration management.
• Automated deployment modules of IIS web applications, bindings and configuration settings using a combination of PowerShell scripts and Puppet.
• Deployed both Puppet Agent-Based and Agentless Configurations, Puppet dashboards, Mcollective with ActiveMQ server, plugin-sync, stored configs, Hiera-Facter.
• Extensively worked on Hudson and Jenkins for continuous integration and for End to End automation for all build and deployments.
• Wrote JUnittest cases for unit, integration, and functional tests, run automatically byHudson/Jenkinsin the builds triggered by each push to GIT.
• Worked on setting up the Jenkins Pipelines, Jobs, and administration of entire Jenkins infrastructure for release automation of 30+ Java-based applications.
• Developed and implemented an Agile SDLC and refinement of the Software Configuration Management (SCM) infrastructure.
• Used JIRA as ticket tracking, change management and Agile and Scrum tool.
• Worked in development, testing, and production environment using SQL, PL/SQL procedure, python, Ruby, PowerShell and shell scripts and managed to host the servers like Tomcat, apache and NGINX
• Enabling users to better manage software development, deployments, and infrastructure with tools such as Jenkins and GIT Hub/Bitbucket.
• Implemented & monitored the Network Administration, security vulnerabilities with Zabbix.
• Worked with Analytics team on building New Relic agents to be installed on servers and managed those using JSON files. They would do 24/7 monitoring, health check and inform in case of emergencies.
• Connected continuous integration system with GIT version control repository and continually build as the check-in's come from the developer.
• Responsible for design and maintenance of the Subversion/GIT Repositories, views, and the access control strategies.
• Implementing a Continuous Delivery framework using Puppet, Bamboo in Linux environments.
• Experienced in branching, tagging, and maintaining the version control systems across the environments using SCM tools like GIT Hub, Subversion (SVN), Atlassian JIRA, GIT lab and Team Foundation Server (TFS) on Linux and Windows platforms.
• Strong in building Object Oriented applications using C++ and Java, writing Shell Scripts and Perl Scripts on UNIX.
• Configuration and maintenance of common Linux application servers such as Apache, JBoss, WebLogic, and administered network services DNS, NFS, Send mail and DHCP, BIND, SSH, and SNMP.
• Experience in implementation of TCP/IP, HTTP, FTP, NIS, NIS+, DNS, DHCP, NFS, NAS, RAID, Jumpstart installation of Solaris and Kickstart in RedHat Enterprise Linux.
• Experience in Manage file systems using Software RAID and recover an array, manage file systems using Logical Volume Management, resize file systems and protect them with LVM Snapshots.
• System configuration/hardening using IP tables, SE Linux, TCP Wrappers, ACL and traditional permission on Linux servers as well as restricting access to terminals, disabling unnecessary services and securing.

Environment: Perl Scripting, Shell Scripting, Subversion, Hudson, Jenkins, JavaScript, Ruby, PowerShell, Bamboo, GIT, Web Logic, Puppet, GIT, Vagrant, Jira, .Net, ANT, TFS, Zabbix, New Relic, Agile, J2EE, Web sphere, MySQL.

Confidential

Systems Administrator

Responsibilities:

• Installed and configured Linux, UNIX, SUSE & RedHat 5.x/6 using Kickstart with PXE for LAMP (Linux, Apache, MySQL and Perl/PHP) installations.
• Configured Kickstart servers and booted the images using PXE in RedHat Linux and also used RedHat Satellite server extensively.
• Dealt with Linux Utilities: KICKSTART, SSH, FTP, AUTOFS, Quota Management, wrappers, User Management, Process Management, Memory Management, and Text processing tools, Log Management, Package Management, Disk Management and Swap Partition/Files Management.
• Efficiency in installing, configuring, and implementing of RAID 0, RAID 1, and RAID 5 levels using Logical Volume Manager (LVM), VERITAS Volume Manager (VVM) and Solaris Volume Manager.
• Installation, configuration, and administration of Apache Tomcat, WebLogic, WebSphere.
• Responsible for installing and configuring VMware setup and Worked on the deployment of applications on VMware and vCenter.
• Experience with working on ZFS file systems which included tasks such as creation, mirroring, cloning and performing snapshots.
• Building and configuring RedHat systems over the network, implement automated tasks through CRON jobs, resolving tickets according to the priority basis.
• Monitored the performance of the systemusing TOP, SAR, PS, VMSTAT, NETSTAT, IOSTAT, and CPU info to check the CPU utilization, bottlenecks of I/O devices, memory usage, and network traffic.
• Tuned, maintained and upgraded WebSphere, WebLogic, JBoss, Tomcat and Apache application servers.
• Applied patches (using RPM and YUM) to fix the holes that were found during the quarterly scan basis using Nessus scan.
• Created BASH shell scripts to automate CRON jobs and systemmaintenance. Publishing the Release notes for all the releases using JIRA.
• Proficient in Networking and configuring TCP/IP, DNS, NFS, NIS, NIS+, SAMBA, LDAP, SSH, SSL, SFTP, SMTP, SNMP servers.
• Troubleshoot network connectivity using PING, NETSTAT, IFCONFIG, and TRACEROUTE commands. Log in to the remote system using Putty, and Telnet.
• Perform both interactive and automated installations of Red Hat Enterprise Linux using Bash scripting.
• Managing services, maintaining and managing log files, monitoring events, logs and troubleshooting system problems using Nagios tool and resolve for any reported issues
• Configuring Virtual Box's (VMWare) for developers for local testing and development of the product before they push it to DEV and CI environments.
• Managed Active Directory and Group Policy objects for three service locations mixed with Windows and Mac clients and Troubleshooting user logins using various remote utilities.
• Administered and managed a Splunk server to monitor both Windows and Linux physical and virtual environments. Automation/Simplification of Digital Guarding Process through SPLUNK.
• Resolved security vulnerabilities by analyzing and recommending improvements in communications and network security at the component level.

Environment: Linux, UNIX, Microsoft Windows, LAMP, Veritas Volume Manager (VVM), Logical Volume Manager (LVM), TCP/IP, DNS, NFS, NIS, NIS+, SAMBA, LDAP, SSH, SSL, SFTP, SMTP, SNMP, SVN, .Net, ZFS, Jira, Java, SQL, MongoDB, Oracle, Agile, Bash, Shell, WebLogic, WebSphere, Apache, Subversion, Splunk.

Confidential

Linux Administrator

Responsibilities:

• Experienced in installation and configuration of various Operating Systems (Windows & Linux) and maintenance of various distributions of Linux like RHEL, CentOS, Debian, Ubuntu, and Fedora.
• Experience in system administration, the system builds, server builds, installs, upgrades, patches, migration, troubleshooting, security, backup, disaster recovery, performance monitoring and fine tuning on SUN SOLARIS, RedHat Linux systems, and Windows.
• Performed troubleshooting on various real-time issues related to GRUB, bootloader, kernel and dealt with hardware troubleshooting, storage management, and performance related issues.
• Performed remote system administration using network protocol tools such as SSH, HTTP, TELNET, FTP, SFTP, SMTP, SSL.
• Managed users, groups and assigning file access privileges using ACLs, changing ownership of users and groups using CHOWN, CHGRP commands, modifying the file permissions using CHMOD, SUID, SGID, sticky bits, and immutable bits.
• Monitoring Disk utilization, Server performance and swap space management, CPU utilization and transferring files from on-premise to a remote location using FTP and SFTP in Linux environment.
• Deployed a LAMP server from the Command Line Interface, and migrated the MySQL database and PHP code from Windows Server to CentOS (Red Hat).
• Used Logical Volume Manager (LVM) to create disk groups, Physical volumes, Volume groups, and used RAID technology for backup and recovery.
• Configured Linux Kickstart on multiple servers for network installation and perform regular installation/applying of patches using RPM and YUM.
• Monitored system performance parameters using TOP, SAR, VMSTAT, HTOP, IOTOP, IOSTAT, NETSTAT Linux commands.
• Experienced in working with LDAP, NFS, Send mail, WebLogic, DNS, DHCP Server, and TCP/IP services.
• Hands on experience in installation, configuration and support of JBoss, Tomcat, Squid, FTP, Apache Web server, LDAP and mail server.

Environment: Linux, Microsoft Windows, Solaris, Kickstart, Logical Volume Manager (LVM), RAID technology, Apache Tomcat, TCP/IP, VxFS, FTP, SVN, .Net, Java, SQL, Perl, Python, Oracle, Agile, WebLogic, Subversion.