PROFESSIONAL SUMMARY:

• Overall 9+ years professional IT experience in Software Development , involved in System administration , Configuration Management, Build and Deployment Automation , Designing, Integration of DevOps tools, and Environment Management, Implementation and Maintenance of application software in Web and Cloud/Server Environment, Cloud Migration on Microsoft Azure and Amazon Web Services(AWS).
• Expertise in AWS services Like EC2, Load Balancer, Lambda, S3, RDS, DynamoDB, Aurora, SQL, VPC, Route53, IAM, WAF, CloudFormation,Elastic Container Service (ECS), Elastic Kubernetes Service(EKS), Kinesis,EBS, Elastic Beanstalk,CloudWatch, CloudTrail, Security Groups, SNS, SQS,Direct Connect.
• Expertise in writing AWS Cloud Formation templates in JSON to use them as blueprints for building & deploying multiple AWS resources.
• Worked on Kinesis Data Streams & Kinesis Firehose & integrated with AWS Lambda for Serverless data collection.
• Experience in Developing automated continuous integration/continuous delivery pipeline for code deployment using Jenkins.
• Efficient in writing Jenkins CI/CD pipelines to drive all MicroServices builds also creating Groovy Scripts for setting up Continuous Integration for new branches, build automation, Plugin management, Securing Jenkins.
• Providing continuous improvement to agile software development teams by working with GIT Lab under the CI/CD pipeline. Used Git, Issue Tracking, Pipeline Management, and Wiki Documentation with GIT Lab to integrate and automate the code checkout process.
• Experience in working on cluster management on Kubernetes to create Pods, Nodes, and deploying MicroServices pulled from the Docker Registry and managed by Kubernetes.
• Experience in Building and deploying the application code using CLI of Kubernetes calledKubectl,Kubelet, and Kubeadm and Schedule the jobs using KubeScheduler.
• 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.
• Automated the tasks with Ansible Playbooks by using YAML functions and migrating the servers with the required configuration changes and testing and deploying the machines using Ansible Commands.
• Integrated Ansible with Jenkins to provide Automation, Continuous Integration through Jenkins managed nodes over SSH/Power shell using Ansible.
• Experience in configuring cloud servers and managing Security Patches via Ansible playbooks and roles.
• Hands on experience in managing Infrastructure on AWS focus on high-availability, fault tolerance and auto scaling using Terraform templates along with Continuous Integration and Continuous Deployment with AWS Lambda and AWS code pipeline.
• Configured and managed MicroServicesapplications on services like AWS ECS, Elastic Beanstalk and created pipelines for automated deployments using GIT Lab.
• Integrated AppDynamics with Jira and Slack for continuous monitoring and On-Call support.
• Hands-on experience in deploying Kubernetes Cluster on cloud environment with master/minion architecture and wrote many YAML files to create many services like pods, deployments, auto scaling, load balancers, labels, health checks, Namespaces.
• IntegratedELK Stack to an existing appliance framework for real time log aggregation, analysis, and querying (Elastic search, Logstash, Kibana) and using ELK Stack, Elastic search for deep search and data analytics, Logstash, Splunk for centralized logging, log enrichment and parsing and Kibana for powerful and beautiful data visualizations.
• Expertise in working with Terraform Template key features such as Infrastructure as a code, Execution plans, Resource Graphs, Change Automation and extensively used Auto Scaling launch configuration templates for launching Amazon EC2 instances while deploying microservices.
• Hands on experience in managing Infrastructure on AWS focus on high-availability, fault tolerance and auto scaling using Terraform templates along with Continuous Integration and Continuous Deployment with AWSlambda and AWS code pipeline.
• Implemented Terraform Templates automating Azure IAAS VM's using terraform modules and deployed virtual machine scale sets in production environment.
• Responsible for writing reusable infrastructure automation (IaC) code libraries using Terraform for IaaS, PaaS and SaaS services in Azure cloud and maintained existing mission critical cloud formation scripts through Terraform and transformed Terraform as an enterprise level infrastructure automation tool.
• Hands on experience in Azure Development, worked on Azure web application , App services , Azure Storage , Azure SQL Database , Virtual machines , Azure AD , Azure search, and notification hub.
• Efficient in troubleshooting the build issues during the Jenkins build process and developedbuild and deployment scripts using ANT and MAVEN in Jenkins to automate the lifecycle of the project.
• Experience in using Nexus and Artifactory repository managers for Jenkins and Maven builds.
• Proficient in Jira as bug tracking system and configured various workflows, customizations and plug-ins for Jira and integrated Jenkins with Jira.
• Experience with container-based deployments using Docker, working with Docker images, Docker Hub, Docker registries like Docker.io, Quay.io and setting up private registries.
• Experience in configuring Chef Server/Workstation and bootstrapping Nodes. Wrote Chef Cookbooks and recipes using Ruby script.
• Knowledge on designing Puppet manifests and bootstrap scripts to allow instances for various roles without maintaining AMI’s and worked on Puppet for the deployment of servers with custom scripts.
• Implemented Office 365 and Azure Active Directory for single sign-on, authentication, authorization, andAzure Role-based Access Control (RBAC).
• Having Experience on creating and updating the Various PowerShell Scripts for windows, Active Directory, Azure ADand O365.
• Installed, configured, and managed full end-to-end GIT Lab integration, Pipeline Management. Also, utilized GIT Lab runners to support application testing and fill system level point of contact to support GIT Lab.
• Proficient in writing automation scripts using Python, Ruby, Perl, Shell, C-shell, Bash, Gothereby automating build and deployment process in various enterprise environments.
• Worked on implementing test casesto followDevSecOpsstrategy model that supports MicroServices applications via Jenkins pipelines.
• Managed and administrated of all UNIX servers, includes Linux operating systems by applying relative patches and packages at regular maintenance periods using RedHat Satellite server, YUM, RPM tools.

TECHNICAL SKILLS:

• Cloud Technologies:: AWS, AZURE
• Operating Systems:: Ubuntu, CentOS, Redhat, Linux, Windows
• Configuration and Infrastructure Management Tools:: Terraform, Ansible, Chef, Puppet, Maven, ANT
• Automation and Ticketing Tools:: GIT Lab, GIT Hub, Jenkins, Bamboo, Jira
• Containerization:: Docker, Docker Swarm, Kubernetes
• Scripting Languages:: Python, Ruby, JSON, YAML, Bash Shell, PowerShell, Go
• Web Servers:: Web Logic, JBoss, Apache Tomcat,WebSphere
• Monitoring Tools:: Splunk, Nagios, Cloud Watch, ELK, App Dynamics
• Databases:: MySQL, SQL Server, MongoDB, DynamoDB
• Repository Management:: JFrog, Nexus, Artifactory
• Network Protocols:: TCP/IP, DHCP, DNS, SNMP, SMTP, Ethernet, NFS
• RHEL Certified (Rhcsa)
• AWS Certified Solution Architect (Validation Number: J06M66FC3BFE1LCD)

PROFESSIONAL EXPERIENCE:

Confidential, Plano, TX

Sr. Systems Engineer

Responsibilities:

• Worked with Cloud infrastructure based of VPC, EC2, Route53, S3, RDS, Dynamo DB, SNS, SQS, Lambda, Redshift, Network ACLs, ELB, NLB, AutoScaling, IAM on AWS using Cloud formation templates and Terraform.
• Used AWS Fargate in collaboration with AWS ECS and AWS EKS for container-based application running to provide high security and reliability.
• Implemented DevSecOps with Jenkins to reduce threats, vulnerabilities and performed risk assessments to detect and analyze threats during the CI/CD process.
• Implemented Security Scans like Static and Dynamic Application testing at each layer of DevOps life cycle and converted the existing DevOps methodologies/workflows to DevSecOps model.
• Implemented CI/CD strategy in involving Jenkins, Terraform Enterprise and AWS that tracks the Security Vulnerabilities for applications running in AWS ECS using Amazon Security Hub.
• Worked on Terraform modules, providers, and resources to setup vault elements like LDAP Authentication Methods, Namespaces, and Secret Engines etc.
• Worked on AWS CloudWatch, CloudFormation, Cloud Trail services and CloudFront to set up and manage cached content delivery.
• Worked on Terraform Template key features such as Infrastructure as a code, Execution plans, Resource Graphs, Change Automation and extensively used Auto Scaling launch configuration templates for launching Amazon EC2 instances while deploying microservices.
• Used Terraform for creating stacks of VPCs, ELBs, Security groups, SQS queues, S3 buckets in AWS and updated the Terraform Scripts based on the requirement on regular basis.
• Implemented cluster services using Docker and Kubernetes to manage local deployments by building a self-hosted Kubernetes cluster using Terraform and Ansible.
• Responsible for writing reusable Infrastructure as a Code(IaC) Modules by using Terraform for IaaS, PaaS and SaaS AWS cloud resources and mentoring the peers to write consumable code to automate the infrastructure provisioning for cloud applications.
• Created function in Lambda that aggregates the data from incoming events, then stored result data in Amazon DynamoDB and S3.
• Expertise in using Boto3 python libraries integrating with Ansible and Terraform for Managing EBS volumes and scheduling Lambda functions for AWS tasks.
• Integrated Kubernetes with network, storage, and security to provide comprehensive infrastructure and orchestrated containers across multiple hosts.
• Migrating existing AWS infrastructure to Serverless Architecture (AWS Lambda) by deploying Terraform (Iac) code from GitHub repositories to implement AWS Lambda functions to run scripts in response to CloudWatch events in the Amazon DynamoDB table and S3 bucket to HTTP requests using Amazon API gateway and AWS SDK’s.
• Used Jenkins Pipelines to drive all MicroServices builds out to the Docker-registry and then deployed to Kubernetes, Created Pods and managed using Kubernetes.
• Developed Kubernetes Config files for load testing of applications and gave insights to teams using Dynatrace.
• Experience in setting up and managing Kubernetes clusters by using Helm charts and used Flux for deploying any code changes made SCM tool's like GitHub, Bit bucket on the Kubernetes cluster.
• Developed dashboards and alarms on Dynatrace to understand behavior/state of MicroServices, help understanding the possible source of the problem and prevent outages.
• Created Terraform templates for provisioning AWS resources and used Terraform graph to visualize execution plan.
• Used Terraform to deploy the infrastructure necessary to create development, test, and production environments for software development projects.
• Used CI/CD Pipeline to drive all MicroServices builds out to the Docker registry and then deployed to Kubernetes, Created Pods and managed using Kubernetes, and used Ansible playbooks to create clusters in Kubernetes by using Jenkins.
• Worked with Redhat OpenShift with S2I builds for different application containerization, Image Streams with integrated Docker registry, Routes, OpenShift templates for application deployments as per the application requirements and demands.
• Worked with Ceph Storage Cluster as Storage Class and RGW in Redhat OpenShift for Persistent Volumes and Claims for EFK, Mysql and PostGreSQL State ful Sets and Other Application persistence requirements.
• Installed AppDynamics controller and agents on VMs and physical servers.
• Involved in AWS Code Pipeline and Creating Cloud formation JSON templates, Terraform Templatesand Configured S3 buckets with various LifeCycle Policies to archive the data to storage classes based on requirement.
• Experience in Configuration Automation and Centralized Management with Ansible and Implemented Ansible to manage all existing servers and automate the build/configuration of new servers.
• Experience in writing various Custom Ansible Playbooks for deployment orchestration and developed Ansible Playbooks to simplify and automate day-to-day server administration tasks.
• Automated Datadog Dashboards with the stack through Terraform Scripts. Configured CloudWatch and Datadog to monitor real-time granular metrics of all the AWS Services and configured individual dashboards for each resource Agents.
• Responsible for installing Jenkins master and slave nodes and involved in plugin Git and schedule jobs using hooksand Creating the build scripts using Maven for Java projects.
• Configuring, automation and maintaining build and deployment CI/CD tools Git/GitLab, Jenkins, Bit Bucket, Docker Registry, Nexus, and JIRA for Multi-Environment.
• Worked on writing multiple Python, Shell scripts for internal applications for various organizational tasks.

Environment: AWS EC2, S3, EBS, VPC, Elastic search, Route53 (DNS), API Gateway, Hashi Corp, Cloud Formation, Dynamo DB, RDS, Redshift, SNS, Kubernetes, Ansible, Maven, Jenkins, Docker, Terraform, Shell scripts, Python, Git, GitHub, Jira.

Confidential Houston, TX

Sr AWS DevOps Engineer

Responsibilities:

• Involving in Implementation of various AWS cloud Application & deployment using Amazon EC2, S3,RDS(Mysql), Elastic Load Balancing(ELB), Auto scaling, Cloud Front, Elastic Block Storage(EBS), Elastic Beanstalk, Cloud Watch, Red shift, Identity Access Management (IAM), Implementing Virtual cloud platforms using Amazon Virtual Private Cloud (VPC), Cloud Formations, LAMDA.
• Experience in implementing Data warehouse solutions in AWS Redshift, worked on various projects to migrate data from one database to AWS Redshift, RDS, ELB, EMR, Dynamo DB and S3.
• Implemented DevSecOps with Jenkins to reduce threats, vulnerabilities and performed risk assessments to detect and analyze threats during the CI/CD process.
• Implemented DevSecOps strategies at different stages in Infrastructure and used DSAT, SAST models to avoid security flaws.
• Implemented end-to-end infrastructure automation by creating and managing AWS services Elastic Beanstalk, RDS Aurora, Lambda, S3, Neptune using Terraform that support Docker running application requirements.
• Migrated the MySQL database from on-premises to AWS Aurora RDS, thereby enabling automatic extending the storage of the system. Used AWS Data migration services to combine databases together, thereby enhancing data compatibility.
• Manage the user accounts (IAM- Identity Access Management), RDS, ROUTE 53, VPC, RDB, DynamoDB, SES, SQS and SNS service in AWS cloud.
• Design roles and groups for users and resources using AWS Identity Access Management (IAM) and implement Multi-Factor Authentication (MFA) on externally available servers and on AWS Console, Monitoring and alerting leveraging Cloud Watch and Cloud Trail.
• Set up and managed ELK (Elastic Search, Log Stash & Kibana) Stack to collect, search and analyze log files across servers, log monitoring and created geo-mapping visualizations using Kibana in integration with AWS Cloud watch and Lambda.
• Orchestrated and migrated CI/CD processes using Cloud Formation and Terraform templates and Containerized the infrastructure using Docker, which was setup in Vagrant.
• Worked with Docker and Kubernetes on multiple cloud providers, from helping developers build and containerize their application (CI/CD) to deploying either on public or private cloud.
• Experienced in managing Docker Containers, Kubernetes Clusters, and Mesos and implemented a production ready, load balanced, highly available, fault tolerant Kubernetes infrastructure and created Jenkins jobs to deploy applications to Kubernetes Cluster.
• Wrote many RBAC policies to define user permissions in Kubernetes and created Ingress, Egress rules for regulating the inbound and outbound traffic of the Kubernetes cluster.
• Expertise with Docker creating Docker files, Docker images, worked on container snapshots, removing images, and managing Docker volumes.
• Integrated Jenkins with Docker container using CloudBees Docker pipeline plugin to drive all MicroServices builds out to the Docker Registry. Integrated Selenium automation regression test suite in Jenkins build pipeline to avoid issues in the production.
• Created Terraform templates for provisioning AWS resources and used Terraform graph to visualize execution plan. Used Terraform to deploy the infrastructure necessary to create development, test, and production environments for software development projects.
• Automated Datadog Dashboards with the stack through Terraform Scripts and Configured CloudWatch and Datadog to monitor real-time granular metrics of all the AWS Services and configured individual dashboards for each resource Agents.
• Experienced in writing Terraform modules for AWS, Azure services and maintain project files per each application with dedicated state file management in centralized repository.
• Used AWS Fargate in collaboration with AWS ECS and AWS EKS for container-based application runningto provide high security and reliability.
• Implemented CI/CD strategy in AWS CodePipeline that tracks the Security Vulnerabilities for applications running in AWS ECS using Amazon Security Hub.
• Created Jenkins jobs and distributing load on Jenkins server by configuring Jenkins nodes, which will enable parallel builds.
• Performed automation of CI/CD pipeline in private cloud using Jenkins shared libraries and multi-branch pipeline and automated the static code analysis through Sonar Qube in Jenkins pipeline for checking code quality.
• Used Ansible Playbooks written in YAML using EC2 Systems Manager Run Command for running complex workloads on AWS and managing a large group of instances for better security, performance and reliability and also used these playbooks to provision Apache web servers, Tomcat servers, Nginx, Apache Spark.
• Experienced with deployment automation of all the MicroServicesto pull the image from the private Docker Registry and deploy to Docker Swarm Cluster using Ansible.
• Automated Java builds in Jenkins with Maven Plugins and implemented multiple plugins for Code analysis. Installed and administered Artifactory repository to deploy the artifacts generated by Maven.
• Performed job scheduling using Ansible Tower andautomated various infrastructure activities like Continuous Deployment, Application Server setup, Stack monitoring using Ansible playbooks and has Integrated Ansible with Jenkins.
• Manage and analyze cloud infrastructure Security incidents and Vulnerabilities by using AWS Config, Control Tower, which gives audit, logs, and reports. Also, recovery from computer-based attacks, unauthorized access, and policy breaches.
• Worked on LVM, resized the logical volume, involved in administering and troubleshooting Unix/Linux Networking servicesand protocols.

Environment : AWS, Azure, Jenkins, Ansible, Terraform, Docker, Kubernetes, AWS Config, AWS Security Hub, AWS Control Tower, Kafka, Splunk, Redshift, Elastic Beanstalk, Maven, Nexus, Amazon ECS, Cloud Formation, Python, YAML, Confluence, Bitbucket.

Confidential, Plano,TX

DevOps/AZURE Cloud Engineer

Responsibilities:

• Involved with planning, designing, and transforming environments from on-premises to cloud-based Work as Cloud Administrator on Microsoft Azure, involved in configuring virtual machines, storage accounts, and resource groups.
• Worked on Microsoft Azure (Public) Cloud to provide IaaS support to client. Set up Automation to create Virtual Machines through PowerShell Script and Azure Portal, Created and managed Storage Account and Affinity Group in Azure Portal.
• Configured Site to Site VPN Connectivity and Configured Window Failover Cluster by creating Quorum for File sharing in Azure Cloud. Building and installing servers through AzureResource Manager Templates or Azure portal. Migrating an On-premises virtual machine to Azure Resource Manager subscription with Azure Site Recovery.
• Extensive experience in Azure Active Directory in which I have maintained the domain with LDAP’s and created MFA’s (Multi-Factor Authentication) for two-step authentication.
• Deployed Cloud services (PaaS role instances) and Azure IaaS Virtual machines (VMs) into secure subnets and VNets and designed Network Security Groups (NSGs) to control inbound and outbound access to network Interfaces (NICs), subnets and VMs.
• AzureAutomation through Runbooks Creation, Migration of existing scripts, Authorizing, Configuring, Scheduling and involved in administrative tasks that include Build, Design, and Deploy of Azure environment.
• Used Terraform for building, changing, versioning infrastructure and collaborate the automation of Azure Infrastructure via Terraform and Jenkins.
• Created Jenkins jobs for continuously building the projects. Scheduled jobs to build upon every check in into subversion. Wrote Groovy script in Jenkins jobs to do pre-and post-build operations.
• Written Chef Cookbooks with Python SSH as the Wrapper to Manage Configurations of Azure Nodes and Test CookBooks on Azure instances using Python SDK.
• Used Chef Files for managing the configurations across various nodes, build, design and maintain the platform automation using Chef.
• Developed Cookbooks, Recipes, Resources and Run lists, managing the Chef Client nodes, and upload the Cookbooks to chef-server from Workstation using knife command, Berkshelf dependency manager, and Test kitchen to validate Chef Cookbooks.
• Created additional Docker Slave Nodes for Jenkins using custom Docker Images and pulled them to ECR . Worked on all major components of Docker like Docker Daemon , Hub , Images , and Registry .
• Orchestrated CI/CD processes using Cloud formation, Terraform templates and containerized the infrastructure using Docker setup in Azure.
• Adept in use of Configuration Management and Orchestration tools such as Docker, Terraform and automated the infrastructure provisioning on Azure using Terraform and Docker.
• Performed automation tasks on various Docker components like Docker Hub, Docker Engine, Docker Compose and Docker Registry. Worked on Kubernetes and Docker Swarm tools to deploy containers in a cluster.
• Integrated Docker container orchestration framework using Kubernetes by creating pods, Config Maps, and deployments.
• Responsible for Continuous Integration (CI) and Continuous Delivery (CD) process implementation using Jenkins along with PowerShell to automate routine jobs.
• Developed shell scripts for automation of the build and release process, developed Custom Scripts to monitor repositories, Server storage.
• Experience in using Splunk for log analyzing and improving the performance of servers. Configured Splunk with Azure services and Appian application to create reports and alerts for events and configure alert mail.

Environment: Azure, Jenkins, Docker, Splunk, Jira, IASS, Kubernetes, Terraform, Chef, Active directory, PowerShell, Nexus, Python.

Confidential

DevOps Engineer

Responsibilities:

• Proficient in the AWS Cloud platform and its features, which include EC2, VPC, EBS, Cloud Watch, Cloud Trail, Cloud Formation, CloudFront, IAM, S3, Route 53, SNS, SQS.
• Experience in branching, tagging, and maintaining the version across the environments using SCM tools like Subversion (SVN), Git, Bit bucket, and GitHub on UNIX and Windows environment.
• Design and implement the CICD architecture and automation solutions using GITHUB, Bitbucket, Jenkins, Bamboo, and Ansible Tower. Deploying to production environment in AWS using Terraform.
• Developed and maintained the build environment, the source code control system and managed build packages using GIT and GIT Hub.
• Experienced in working on DevOps /Agile operations process and tools area (Code review, unit test automation, Build & Release automation Environment, Incident and Change Management) including various tools.
• Worked in an agile development team to deliver an end to end continuous integration/continuous delivery product in an open source environment using tools like Puppet & Chef.
• Worked closely with the Development team to maintain proper versioning of the source code in GIT to revert whenever required.
• Experienced in Continuous Integration (CI) and Continuous Delivery (CD) process implementation using Jenkins, Team City, and Bamboo.
• Designed various Jenkins jobs to continuously integrate the process and executed CI/CD pipeline using Jenkins, Ansible Playbooks and Ansible Tower.
• Worked in all areas of Jenkins setting up CI for new branches, build automation, plugin management and securing Jenkins and setting up master/slave configurations.
• Created Jenkins Pipelines involving several Downstream/Upstream job configurations based on dependencies from other applications & based on Release methodologies.
• Involved in integrating the GIT, Bit Bucket into the Puppet to ensure the integrity of applications by creating Production, Development, Test, and Release Branches.
• Configured P uppet master, client and wrote scripts to deploy applications on Dev, QA, Production environment.
• Developed Puppet modules to automate deployment, configuration, and life-cycle management of key clusters.
• Wrote P uppet manifests for configuration management and deploy .Net and Java applications.
• Experience in creating Chef Cookbooks and recipes to automate middle-ware installation, domain creating and deployment activities.
• Worked on AWS costs by writing the Ansible Playbooks for auto Start/Stop of AWS resources at the time of the day by triggering it from Jenkins and knowledge on RHEL on Ansible Play books, Modules and Roles.
• Created Ansible playbooks to automatically install packages from a repository, to change the configuration of remotely configured machines and to deploy new builds and various automation purpose, file copy, permission changes, configuration changes, path specific folder creation .
• Installed, upgraded and configuration of Red Hat Linux usingKickstart installation and Implemented Kickstart configuration for automating Linux installations.
• Worked on UNIX, Red hat Linux, Linux desktop, SUSE Linux Enterprise Server, and Ubuntu.
• Worked on Installation, Configuration and administration ofDNS, LDAP, NFS, and NIS on Red Hat Linux /Debian Servers.
• Developed various Bash shell scripts to automate resource, job monitoring and alerting.
• Involved in setting up accounting systems and performing ongoing system with the administrative tasks. Extensive user and group management through shell scripting .
• Installed and used monitoring tool like Nagios, Configured, and Managed Monitoring Tools such as Nagios for Resource Monitoring/Network Monitoring/Log Trace Monitoring. Monitoring focal utilizing Nagios.
• Conduct day-to-day tasks in RHEL that included upgrading rpms, kernel, HBA driver, configuring SAN Disks, multipathing and LVM file system .
• Troubleshooting Linux network, security related issues, capturing packets using tools such as Iptables, firewall, TCP wrappers, NMAP.
• Configuration and support of VERITAS Cluster Server for various agents including SAP, Oracle, DNS.

Environment: AWS, Jenkins, GIT, GIT Hub, Ansible, Agile, UNIX, Redhat Linux, Chef, Puppet, Bash Shell/Perl Scripting, Nagios, Firewall, Maven, Centos, ANT.