SUMMARY:

• Over 8 years of experience in IT industry comprising DevOps, Amazon Web Services, Azure, Build/Release management and Linux System Administration.
• Worked on Continuous Integration (CI) and Continuous Delivery (CD) in Agile, Scrum and Waterfall methodologies with thorough knowledge on each phase of the SDLC (Software Development Life Cycle).
• Strong experience in setting up enterprise infrastructure on AWS platform and In - depth knowledge in designing highly available, fault tolerant, scalable systems like EC2, S3, EBS, VPC, ELB, AMI, SNS, SQS, RDS, IAM, Lambda, Route 53, Auto scaling, Load Balancing, CloudFront, Cloud Watch, Cloud Trail, Cloud Formation, Cloud Foundry, OpsWorks, NAT Gateways, Subnets, Security Groups and NACL's.
• Ensure data integrity and data security on AWS technology by implementing AWS best practices.
• Experience in Converting existing AWS infrastructure to Server less architecture (AWS Lambda, Kinesis), deploying via Terraform and AWS Cloud Formation.
• Experienced with event-driven and scheduled AWS Lambda functions to trigger various AWS resources and Worked on Lambda, for triggering events with cloud watch using Lambda functions.
• Experience working on Azure Fabric, Microservices & Docker containers in Azure.
• Experience on Cloud Automation using AWS Cloud Formation Templates, Terraform, Chef and Puppet.
• Proficient level of experience on DevOps essential tools like Chef, Puppet, Ansible, Docker, Subversion (SVN), GIT, TFS, Hudson, Jenkins, Octopus deploy, Ant, Maven and AWS Developer services like CodeDeploy, CodeCommit, CodeBuild and CodePipeline.
• Experienced in System Administration, Installations, Upgrades, Patches, Security, Backup, Migration, Disaster Recovery, System Builds, Server builds and Performance Monitoring in Linux/Unix Systems.
• Extensively worked with source code management tools like SVN (Subversion), TFS, GIT and Bit Bucket.
• Expertise in using build tools like MAVEN and ANT for the building of deployable artifacts such as war & ear from source code using RabbitMQ, Kafka.
• Extensively worked on Jenkins, Hudson and TeamCity for continuous integration and for end to end automation for all builds and deployments.
• Experience with any enterprise deployment automation tools like uDeploy, XL Deploy.
• Automated deployment modules of IIS web applications, bindings and configuration settings using a combination of PowerShell scripts and Puppet.
• Experience on writing Chef Cookbooks and Recipes to provision several pre-prod environments consisting of DB installations, Tomcat/WebLogic domain creations and several proprietary middleware installations.
• Worked on developing Ansible Go Scripts for automating regular tasks.
• Installed/Configured the WebSphere server, JBoss application server, WebLogic, Tomcat, Nginx server.
• Container clustering with Docker Mesos/Kubernetes.
• Experience working on Docker hub, creating Docker images and handling multiple images primarily for middleware installations and domain configuration.
• Proficiency with container system like docker and container orchestration like EC2 container service, kubernetes, worked with terraform.
• Managed docker orchestration and docker containerization using kubernetes.
• Experience working with log monitoring, ELK (ElasticSearch, Logstash, and Kibana) Stack.
• Strong in building Object Oriented applications using C++ and Java/J2EE, writing Shell and Perl Scripts on LINUX/UNIX.
• Worked extensively in installing, configuring and maintaining Quest authentication services (QAS) software for centralizing user management and access control.
• Wrote scripts
• Developed UNIX shell scripts, to automate the User creation, performance monitoring, installation and maintenance procedures.
• Proficient in writing Python, Ruby, YAML, Perl, Shell, Bash, Powershell Scripting to automate the deployments.
• Hands on experience with monitoring & issue tracking tools like Splunk, Nagios, Zabbix, New Relic and Jira.
• Efficient experience in using Nexus, jFrog and Artifact Repository managers for Maven builds.
• Experience working / administering databases both SQL and NoSQL (MongoDB, Cassandra).
• Expertise in Installation and maintenance of Mail Servers like SendMail, Postfix. Configured and administered SNS, NFS, DNS, NIS, SSL, DHCP, NIS+, SAMBA, Send Mail, FTP, Remote access and LDAP on Linux server environment.
• Having strong and progressive experience in the server installation and administration of Red Hat Linux, Debian, Centos, OEL (Oracle Enterprise Linux), SUSE and VMware vSphere ESX & ESXI on various Hardware Platforms.
• Expertise in troubleshooting the problems generated while building, deploying and in production support.
• Managed environments DEV, QA, CI, UAT and PROD for various releases and designed instant strategies. Also, Responsible for building and releasing packages for different testing environments.

TECHNICAL SKILLS:

Cloud Infrastructure: AWS, OpenStack, Azure, OpenShift

Operating Systems: RHEL/Centos, Ubuntu/Debian/Fedora, Sun Solaris, Unix, Windows

Virtualization Tools: VMware vSphere, Oracle VirtualBox, VMware Workstation

Version Control Tools: GIT, GitHub, SVN (Subversion), BitBucket, TFS

Build Tools: Maven, Ant, Gradle

CI tools: Jenkins, TeamCity, Bamboo, Hudson

Configuration Management Tools: Ansible, Chef, Puppet, Octopus deploy, SaltStack

Containerization: Docker, Kubernetes

Monitoring Tools: Nagios, Splunk, ELK, Graylog, New Relic, Zabbix

Testing Tools: Sonar, JUnit

Bug Tracking tools: JIRA, Crucible, Rally, Remedy and IBM Clear Quest, Bugzilla, and HP Quality Center

Web/ App Servers: Nginx, Apache Tomcat, WAS, IBM WebSphere, WebLogic, JBOSS

Web Technologies: Google Web Toolkit, HTML, JavaScript, CSS, XML, XSLT

Scripting Languages: Shell, Bash, Perl, Ruby, Yaml, Python, Groovy and PowerShell

Databases: SQL Server, MySQL, DynamoDB, MongoDB, Oracle, Cassandra, Spark

Messaging: Apache Kafka, RabbitMQ

Network Protocols: DNS, NIS, DHCP, NFS, Web, Mail, FTP, TCP/IP

PROFESSIONAL EXPERIENCE:

Confidential, Burlington-MA

DevOps/Azure Engineer

Responsibilities:

• As a Software Engineer I am part of a dynamic team, collaborating with Confidential to build out a release pipeline for their products and services. I will be participating by helping to ensure the infrastructure portion of the service stack has an SDLC and that the processes and environments force quality and correctness into the dev/test cycles prioritizing service Availability, Performance, Capacity, Security and Compliance.
• Participate in and strongly contribute to architectural reviews and discussions of test/release process. Provide unwavering support & collaboration for the software engineers on SaaS projects.
• Ensure that new and existing products sport automated deployment, and remote execution-based remediation scripts which can be handed off to 24x7 NOC organizations.
• Participate in the testing of functionality, operability, deployment, and performance for application or infrastructure changes.
• Evangelize SDLC processes for infrastructure change.
• Participate in tool authoring, integration and extension via REST or SOAP.
• Use Terraform to write IAC (Infrastructure as a code) to build Development and Production environment in Azure Cloud.
• Worked on Active Directory roles for assigning users and installing more services to AD.
• Used Salt Stack to configure all the servers Production and Development environment. Written high state (SLS) files in Salt-stack and push them to all the minions attached to it.
• Deployed multiple software’s through automation using Salt-stack.
• Manage GIT (Version Control Tool) for maintaining code repositories.
• Write / Create build scripts to do the build automation for DEV, QA and PROD environments.
• Experience in Linux Administration, Engineering, and CI/CD Automation.
• Use Salesforce Cloud for writing Change requests and Service requests.
• Write scripts to Mask the sensitive information of the Customers and Employee’s in the Database that gets from Production and load it to DEV and QA environments.
• Automated application deployment in the cloud using docker technology using elastic container service scheduler.
• Worked on Docker container snapshots attaching to a running container, removing images, managing structures and managing containers.
• Developed microservice on-boarding tools leveraging python and Jenkins allowing for easy creation and maintenance of build jobs and kubernetes deploy and services.
• Providing web test and portal access to new developers and setting up their VM’s.
• Participate in daily standup calls for the different teams of development for activity tracking.
• Document all the methods and steps that are implementing in the build and deployment jobs.

Environment: Windows, Linux, JIRA, Bit Bucket, Jenkins, Agile, Git, UNIX, Perl, Python, XML, Apache Tomcat, JBOSS, Azure, Terraform, Kubernetes, Docker, Artifactory, SQL Client, Salt Stack, Salesforce, Active Directory.

Confidential, Connecticut

Sr. DevOps/AWS Engineer

Responsibilities:

• Responsible for CI/CD Automation in all categories of application development like Versioning, Building, Testing and Deployment.
• Migrating and Maintaining build and test environments into the Cloud Infrastructure.
• Responsible for implementing AWS solutions and setting up the cloud infrastructure with different services like EC2, S3, VPC, ELB, AMI, EBS, RDS, DynamoDB, Lambda, Auto Scaling, Route53, Subnets, NACL's, CloudFront, CloudFormation, CloudWatch CloudTrail, SQS and SNS.
• Responsible for writing JSON or YAML format Cloud Formation templates that describes all the AWS resources needed to deploy to run the application.
• Configuring and Networking of Virtual Private Cloud (VPC). Utilized S3 bucket and Glacier for storage and backup on AWS.
• Migrating a production infrastructure into an Amazon Web Services utilizing AWS Cloud formation, Code Deploy, Chef, EBS, and OpsWorks.
• Used CodeDeploy to automate code deployments and to run updated scripts for instances on AWS cloud and on-premise instances by eliminating the need for error-prone manual operations.
• Managed AWS CodeCommit source control service for hosting private GIT Repositories using GIT CLI.
• Responsible for copying data from multiple schemas in an Oracle Source to a single Amazon RDS for Oracle target by using AWS Data Migration Service.
• Managed the AWS Lambda Functions configuration information based on requirements and built lambda functions using Node.js, Python and Java.
• Built & uploaded deployable code in Elastic Beanstalk to automate the details of capacity provisioning, load balancing, auto scaling and application development.
• Administered AWS WAF via APIs and able to create and maintain rules automatically by incorporating them into the development and design process.
• Written templates for AWS Infrastructure as a code using Terraform to build staging and production environments.
• Managed network security using Load balancer, Auto scaling, Security groups and NACLS.
• As part of Cloud team fixed issues related to OpenStack components Nova, Glance, Neutron, Keystone.
• Managed OpenShift PaaS in Google Cloud Platform and migrated existing AWS applications to the new containerized environment.
• Designing and implementing CI (Continuous Integration) system: configuring Jenkins servers, Jenkins nodes, TeamCity, creating required scripts (Perl & Python), and creating/configuring VMs (Windows/Linux).
• Coordinate/assist developers with establishing and applying appropriate branching, labeling/naming conventions using GIT, TFS & Subversion (SVN) source control.
• Maintained build related scripts developed in shell for Maven builds. Created and modified build configuration files including POM.
• Configured GIT with Jenkins and schedule jobs using Poll SCM option.
• Worked on Ansible to manage Web Applications, Config Files, Data Base, Commands, Users Mount Points, and Packages. Ansible to assist in building automation policies.
• Used Knife and Chef Bootstrap processes and worked on chef server management console with proficient knowledge on all different components like chef server, nodes and workstations.
• Written multiple cookbooks in Chef using Ruby scripting language for various DB configurations to modularize and optimize end-product configuration, converting production support scripts to Chef Recipes.
• Experienced in configuring Nodes, data sources, Virtual host, installation and configuration of Websphere Application Server.
• Configured WebSphere resources like JDBC providers, JDBC data sources, connection pooling.
• Experienced in applying Fix Packs, Feature Packs for Websphere application server using 7v in GUI and Silent Mode.
• Wrote Groovy/Unix scripts to configure resources and Servers.
• Integration, deployment and automation of application servers Tomcat, WebLogic across Linux platforms.
• Provisioned different VM's for different purposes in the process of application development using Vagrant by editing and updating the Vagrant file.
• Experience in using Kubernetes to create Pods, ConfigMaps and deployments into cluster.
• Created Docker images using Dockerfile, worked on Docker container snapshots, removing images and managing Docker volumes
• Implementing the Docker for wrapping up the final code and setting up development and testing environment using DockerHub, DockerSwarm and Docker Container Network.
• Deployed the built Docker image on Mesos using Marathon. Using a multi-container setup deployed on Mesos.
• Developed web-based software in Python on Linux (Ubuntu) running on AWS using Chef, Cassandra, MongoDB, Redis, Couch Base, RabbitMQ.
• Used Nagios, Splunk as a monitoring tools to identify and resolve infrastructure problems before they affect critical processes and worked on Nagios Event handlers in case of automatic restart of failed applications and services.
• Maintained JIRA Tool for issue tracking and bug tracking.
• Created multiple Perl, Python, PowerShell and Unix shell Scripts for various application level tasks.
• Installation, Configuration of NFS, DNS, SAMBA, and APACHE severs in Redhat, Debian, Ubuntu Linux Servers.
• Troubleshooting Linux network, security related issues, capturing packets using tools such as IP tables, firewall, TCP wrappers, NMAP.

Environment: Amazon Web Services (AWS), Openshift, OpenStack, Cloud Foundry, GIT, TFS, Jenkins, IBM Curam, Maven, Nexus, Ansible, Chef, Terraform, Vagrant, Docker, SQL Server, Kubernetes, Groovy, Java, Node.js, Python, Perl, Ruby, PowerShell, Bash, Nagios, JIRA, ELK Stack, Nagios, Splunk, UNIX/Linux Environments.

Confidential, Austin, TX

DevOps/ Cloud Engineer

Responsibilities:

• Responsible for providing an end to end solution for hosting the web application on AWS cloud with integration to S3 buckets.
• Supervised the DevOps team for infrastructure support on AWS cloud.
• Initiated planning sessions for development and testing teams to simplify deployment activities.
• Designed a highly available secure multi zone AWS cloud infrastructure utilizing Chef with AWS Cloud Formation.
• Maximized the through put between the CPU and drives and improved the performance of data processing with the help of Amazon Red shift.
• Enabled the Amazon CloudWatch to monitor major metrics like Network packets, CPU utilization and load balancer.
• Utilized Amazon Elastic Block Storage which provides persistent block storage volumes for use with Amazon EC2 instances in the AWS cloud.
• Enhancement of Amazon Virtual Private Cloud in the scalable environment which provides advanced security features such as security groups and network access control lists to enable inbound and outbound filtering at the instance level and subnet level.
• Worked with Amazon Elastic Load Balancing which automatically distributes traffic across multiple Amazon EC2 instances which enables to achieve fault tolerance in the applications.
• Incorporated Amazon Ops works which is a configuration management tool that uses Chef to automate the servers that are configured and deployed across Amazon EC2 instances.
• Well versed with Amazon Route 53 which effectively connects user requests to the infrastructure running on AmazonEC2 instances and AmazonS3 buckets.
• Programmed Jenkinsfile for Jenkins Pipeline to create fully functional development environments in Openshift on demand.
• Deployed service and UI component in Cloud Foundry using pipeline scripts.
• Automated Web service calls using Groovy scripting - Wrote Groovy scripts which automatically validates the web service calls and reports if any issues occur.
• Formulated in connecting continuous integration with GIT version control repository and continually build as the check-inn's come from the developer.
• Established ANT and MAVEN scripts for build activities in QA, Staging and Production environments.
• Executed the automation from commit to deployment by implementing a CI/CD pipeline with the help of Jenkins and Chef.
• Used Nexus Artifactory repository tool for maintaining the java based release code packages.
• Involved in the creation of workflows in uDeploy.
• Worked with Ansible Playbooks for zero-downtime installation, upgrade, downgrade, and uninstall processes (MongoDB, Redis, and MySQL).
• Managed our internal Configuration management, Chef, and helped with our work on integrating other CM tools such as Puppet, Ansible, and SALT into our product offerings.
• Accelerated the Chef infra maintenance including monitoring and security fix and on Chef Server backups.
• Advanced the automation for middleware installations and deployment activities by writing Chef Cookbooks and recipes.
• Improved the virtualization for the servers using the Docker for the test environments and the dev. environment needs.
• Dockerswarm is integrated with Docker daemon.
• Achieved Continuous Delivery in high scalable environment by Docker coupled with load balancing tool Nginx.
• Created Vagrant windows and Linux boxes using Packer.
• Involved in setting up Rally as defect tracking system and configured various workflows, customizations and plugins for the Rally bug/issue tracker.
• Supported mission critical implementations of Kafka and RabbitMQ message servers running Centos and Windows server.
• Implemented the automated Nagios in Ops environment for alerts and email notifications using Python script and executed them through Chef.
• Performed Data upgrades from RDBMS into Cassandra databases.
• Performed Log analysis using ELK stack and created monitoring charts.
• Initiated the process of deployment for automation to Web Sphere servers by developing Python scripts.

Environment: GIT, TFS, Ant, Maven, Jenkins, Ansible, Chef, AWS EC2, S3, Route 53, Opsworks, VPC, Elastic Block Storage RDS, Python, CloudWatch, Docker, Linux AMI, AWS Elastic Load Balanced, Openshift, Vagrant, Nagios, Splunk, ELK, Auto scaling groups, Groovy, Nginx, Apache Tomcat, JIRA, Rally, Ubuntu, Windows server NT, Oracle server.

Confidential, Coppell, TX

DevOps Coordinator

Responsibilities:

• Used GIT as source code management tool for creating the local repo, cloning the repo, adding, committing and pushing the changes in the local repo.
• Worked with build and release of Cloud based products containing Linux and Windows environment using PowerShell and Team Foundation Server.
• Managed builds and wrote build scripts for JAVA and WebSphere based applications.
• Automated deployment of builds to different environments using Jenkins.
• Involved in using Continuous Integration tools like Cruise Control, Build Forge, and Hudson.
• Created proof of concept to perform ETL on audit log data using Kafka/Spark and Kafka/Nifi.
• Well versed with administering and automation using Chef and Puppet.
• Boosted the cloud infrastructure through the development of automation software such as Opscode Chef books.
• Initiated the implementation of server provisioning and infrastructure automation in SAAS environment by using Chef.
• Generated Python Django forms to record data of online users.
• Written scripts using PowerShell, MS Build.
• Utilized PowerShell scripts which automates the creation of contacts from Active Directory users and updating of address books increasing productivity and efficiency.
• Administered different bug tracking tools like JIRA, Remedy, Clear Quest and Bugzilla.
• Responsible for building and configuring a virtual datacentre in AWS cloud to support Enterprise Data Warehouse hosting including Virtual Private Cloud, Public and Private subnets, security groups, Route tables, Elastic load balancer, CloudWatch and Security management VPC.
• Advanced the configuration of virtual machines availability sets using Azure portal to provide resiliency for IAAS based solution and scale sets using Azure resource manager to manage network traffic.
• Supervised the escalations for Hyper-V, Microsoft Azure IAAS and Windows OS.
• Utilized Amazon Dynamo DB which provides high I/O performance and efficiently handled the high scale requests by using Dynamo DB API.
• Advanced AWS Code Commit in the cloud environment which is used to host secure and highly scalable GIT repositories.
• Accelerated the AWS Elastic Bean Stalk used for deploying and scaling web applications on servers such as Nginx, Apache and IIS.
• Out spaced the End to End solution for hosting the web application on AWS cloud with integration to S3 buckets.
• Utilized Identity Access and Management service which defines a set of permissions to access the resources per client needs.
• Supported the team in the migration of environment from RedHat to Centos environment.

Environment: GIT, Team Foundation Server, MS Build, Jenkins, Chef, Puppet, Python, PowerShell, Nginx server, Apache server, JIRA, Clear Quest, Bugzilla, Linux, Windows, AWS EC2, S3, CloudWatch, VPC, Elastic Load Balancer, IAM, AWS Code Commit, Dynamo Database, Hyper-V, Microsoft Azure.

Confidential

DevOps / Systems Engineer

Responsibilities:

• Primary responsibilities include Build and Deployment of the java applications into different environments like Dev, Prod and QA.
• Managing the code migration from TFS, CVS and Star team to Subversion repository.
• Used sub modules in the GIT and educated users working with sub modules in GIT. Created repositories according the structure required with branches, tags and trunks.
• Defined dependencies and Plug-ins in Maven pom.xml for various activities and integrated Maven with GIT to manage and deploy project related tags.
• Installed Jenkins on a Linux machine and created a master and slave configuration through a build farm for implementation of multiple parallel builds.
• Set up and maintain continuous automated build system with Jenkins, ClearCase and Python scripting.
• Involved in migration and upgrade of Bamboo server, Artifactory & Git server.
• Addressed software configuration management issues in coordination with development team.
• Used configuration management tools Chef, Puppet, and CF Engine.
• Manage deployment automation using Puppet, Roles, Profiles, Collective, hiera and Custom Puppet modules.
• Installed and configured uDeploy for automating deployments and providing a complete automation solution.
• Performed Server configuration management and implemented Oracle Transparent Data Encryption.
• Generated scripts in Perl, Bash, Shell for build activities in QA, Staging and Production environments.
• Constructed a RESTful API to manage infrastructure services using Python and Flask.
• Troubleshoot build and deploy issues with little downtime.
• Responsible for WebLogic, JBoss support and monitoring various applications deployed on Linux and Windows platforms.
• Well versed with Nagios monitoring setup, puppet automation for squid, beakers, apache, and module automation for middle ware environments.
• Splunk implementation, configure, maintain, troubleshooting Splunk/Linux systems.
• Worked extensively on Linux, Solaris, AIX platforms.

Environment: Java, TFS, CVS, GIT, Subversion, Maven, Jenkins, Bamboo, Artifactory, Perl, Bash, Python, Flask, Oracle, Chef, Puppet, uDeploy, WebLogic, JBoss, Splunk, Nagios, Linux, Solaris, AIX.

Confidential

Build & Release Engineer

Responsibilities:

• Build Engineer for the Client UNIX and Java applications.
• Setup different environments for build and Release into Development, Test, Pre-production and Production.
• Designed effective planning for SCM and implemented the setup of the Environment.
• Implemented TFS branching and merging operations for .NET Source Code in the Agile Development Methodologies.
• Initially used Ant for writing build.xml for building Java/J2ee applications and later migrated to Maven.
• Defined dependencies and Plug-ins in Maven POM.xml for various activities and integrated Maven with SVN to manage and deploy project related tags.
• Designed and implemented Continuous Integration process using tools like Jenkins with approval from development and other affected teams.
• Used Maven dependency management system to deploy snapshots and release artifacts to Nexus to share artifacts across projects.
• Installation and configuration of management tool Puppet across RHEL environment.
• Used Puppet to manage Web Applications, Config Files, Data base, Commands, Users Mount Points, packages.
• Migrated VMWARE VMs to AWS and Managed Services like EC2, S3 Bucket, ELB and EBS with Puppet modules/manifests.
• Deploying UNIX scripts, Auto scripts and database scripts on respective servers for all 5 test environments using Change Man DS deployment utilities.
• Installed and Configured WebSphere Application server with LDAP security.
• Set up automated deployment on JBOSS and WebSphere application servers using Python and shell scripts.
• Written Perl scripts for the automation of daily support tasks.
• Adopted Install Shield scripts, written scripts and used them to package builds and releases for different environments as defined in SDLC.
• Build artifacts (WAR's and EAR's) and deployed into a Web logic app server by integrating the WLST scripts to Shell Scripts.
• Used Nagios monitoring tool for monitoring of servers.
• Code Push and Data migration for each release to the new test environment and production.
• SVN repository Administration and Configuring, maintaining network and troubleshooting such as DNS, NFS.
• Working with LDAP, Active Directory, DNS and VLAN technologies.
• Installed various third-party software's like Oracle Client, Oracle Database and Oracle Apps Server.
• Incorporated the Code Quality Tools to find Bugs.

Environment: Java, Subversion (SVN), TFS, Ant, Maven, Jenkins, Nexus, Puppet, Python, Perl, Shell, Oracle, JBOSS, WebSphere, LDAP, WebLogic, Nagios, Linux / Unix, RHEL, VM Ware.

Confidential

Linux System Administrator

Responsibilities:

• Maintained and administered RHEL, Solaris and SUSE Servers.
• Configured kickstart server and updating/applying patches to the servers using RedHat Satellite Server.
• Planned and performed the upgrades to Linux (RHEL, SUSE, CENTOS) operating systems and hardware maintenance like changing memory modules, replacing disk drives.
• Installation and configuration of Oracle 7.x/8.x
• Responsible for Installing and configuring of AIX 5.3 servers and migrating servers from AIX 5.1,5.2 to AIX 5.3
• Responsible for creating LPARs and installing AIX 5.3 in the LPARs.
• Responsible for TL upgrades and maintaining current software levels on AIX 5.3 systems.
• Responsible for the installation, configuration and maintenance of PowerBroker tool on AIX 5.1, 5.2, 5.3, RHEL 4.x, 5.x and Solaris 8,9,10.
• Worked on project to transition no of local Unix accounts to Active Directory, using Quest QAS/VAS; created series of complex Korn scripts and a highly-detailed procedure.
• Process trouble-tickets & change-requests
• Wrote scripts to collect security related data from several servers to analyze for Quest implementation.
• Administered and troubleshoot networking with CISCO 3640 Routers, 2900, 3350 Switches and PIX 520, 501 Firewalls.
• Setting up network environments using TCP/IP, NIS, NFS, DNS, SNMP agents, DHCP and Proxy.
• Worked on implementation and troubleshooting of network services like NFS, FTP, NTP, Telnet, SSH.
• Identify, troubleshoot and resolve problems with the OS build failures.
• Remote system administration using tools like SSH, Telnet, and Rlogin.
• Writing shell scripts for automation of daily tasks, documenting the changes that happen in the environment.
• Wrote and implemented Perl script to modify LDAP database.
• Used Puppet tool for managing system configurations.
• Troubleshooting Backup and Restore problems, Creation of LVMs on SAN using Linux utilities.
• Performing failover and integrity test on new servers before rolling out to production.
• Involved in setting up Storage Area Network (SAN) and Network Attached Storage (NAS) and file system backup and restore.
• Scheduling jobs using CRONTAB & AT utility.
• Managed servers using Cloud platforms and developed relationships with vendors/ clients.
• Administered and Configured Logical Volume Manager which involved create and modify file system, logical volume, Physical volume, Volume groups, mirroring and un-mirroring of volume groups, hot spare physical volume.
• Monitoring CPU, memory, physical disk, hardware and software raid, multipath, file systems, network using the tools Nagios monitoring.

Environment: Red Hat Linux, Solaris, SUSE, Oracle, SSH, Telnet, Puppet, Networking, AIX Servers, QAS, Korn Scripts, Unix, Active Directory, CISCO Routers and switches, Firewalls.