• Spearheaded the migration of moving from on-premises to cloud service and provide support and maintenance in the following stages.•Managed various operations on AWS cloud resources, including EC2 instances, S3 buckets, VPCs and ELB.• Experienced in using AWS for costing, provisioning, administration, monitoring, and troubleshooting.• Automated AWS services using Python scripts, including web servers, ELB, CloudFront, database, EC2 and database security groups, S3 bucket, and application configuration.• Worked with Azure Power-shell scripting to create and manage Azure virtual machines, cloud services, and storages.• Participated in Windows Azure IaaS and managed virtual networks, virtual machines, cloud services, resource groups, express route, traffic manager, VPN, load balancing, application gateways, auto-scaling, and storage accounts.• Built Jenkins and Azure DevOps CI/CD pipelines for infrastructure code validation and verification (e.g., using Puppet and Terraform).• Authored Terraform scripts from scratch to build Development, Staging, Production, and Disaster Recovery for cloud infrastructures.• Designed Terraform templates to establish custom VPCs and NAT subnets for deploying web applications and databases.• Deployed EC2 instances using Terraform modules and automated the process using Terraform and Jenkins.• Authored Ansible Playbooks using YAML scripting and Puppet manifests using DSL for provisioning Nginx, Apache Spark, Apache Web servers, and Tomcat servers.• Implemented a Docker delivery pipeline for CI/CD of Java tomcat web service containers and worked on creating Docker containers and managing the application lifecycle using Docker consoles.• Worked with build environment like Jenkins and container management systems like Docker and Kubernetes.• Experienced in using Splunk, to collect, analyze, and visualize large volumes of data, providing real-time insights into system performance and facilitating proactive problem resolution.

• Experience as a DevSecOps engineer, with a focus on automating, configuring, and deploying instances on AWS, Azure cloud environments, and data centers. Utilized Azure Express Route for a private connection to Microsoft cloud services.• Worked with multiple OpenStack distributions such as Mirante's OpenStack, Red Hat OpenStack, and OpenStack Ansible project.• Utilized Jenkins to deploy Spring Boot microservices to AWS cloud and Pivotal Cloud Foundry (PCF) using build packs.• Converted a monolithic app to a microservices architecture using Spring Boot and the 12-factor app methodology. Deployed, scaled, configured, and wrote manifest files for various microservices in PCF.• Integrated Gitlab with various tools such as Jira, Slack, SonarQube, and Artifactory to streamline the DevOps toolchain within Gitlab.• Used Gitlab as the sole tool for CI/CD, replacing fragmented usage of Bitbucket and Jenkins.• Designed a Kubernetes cluster using AWS-Kops (EKS), deploying the Kubernetes dashboard, and customizing the Halyard configuration for Spinnaker deployment in a private Kubernetes cluster.• Managed Kubernetes charts using Helm, developed, and implemented manifests and charts for microservices deployment, and worked on a highly available and fault-tolerant Kubernetes infrastructure.• Configured monitoring and alerting tools such as AWS CloudWatch, CloudTrail, Dynatrace, Nagios, Splunk Enterprise, and SNMP monitoring for VPN connections.• Proficient in utilizing Twistlock, to secure and manage the containerized application and microservices, resulting in increased system protection and compliance with industry standards.• Conducted regular security scans and vulnerability assessments, and implemented remediation plans to address identified risks, resulting in secure and robust software applications.

• Worked on initial Azure component deployment such as Azure Virtual Networks, Azure Application Gateway, Azure Storage and Affinity groups. • Hands-on experience in designing, planning and implementation for existing on-premises applications to Azure Cloud (ARM), configured and deployed Azure Automation Scripts utilizing Azure stack (Compute, Web and Mobile, Blobs, ADF, Resource Groups, Azure Data Lake, HDInsight Clusters, Azure Data Factory, Azure SQL, Cloud Services and ARM.• Designing and implementation of Azure Virtual Networks with associated subnets and network security groups (NSG). • Managed Azure Security groups using Azure Portal and PowerShell scripts and attached them to VM's and subnets. • Administered complete Microsoft Office 365 for local and remote users including Exchange, Lync, office and local on premises active directory syncing with Azure AD. • Created CI/CD Pipelines in Azure DevOps environments by providing their dependencies and tasks. Also created Azure key-vault to store all the credentials for SQL databases and API keys. • Wrote puppet modules for the Tomcat/Apache/Splunk forwarder services in our distributed infrastructure. • Leveraged Ansible to manage existing servers and automate the build/configuration of new servers and defined server types in Ansible to provision a new server to deploy to production.• Created Docker environments and maintained them for containerized micro services-oriented environments and for hosting images configurated private container registry on Microsoft Azure by creating Docker files.• Developed Terraform templates to build, change and version Infrastructure as Code (IaC) using Azure as provider and launched multi-layered resource groups to be provisioned and configured with Terraform template.• Deployed Kubernetes container application using Azure Kubernetes Service (AKS), ACS, Azure CLI, Azure Active Directory, Azure Virtual Network, Azure Storage, and Azure Database for MySQL.

• Implemented virtual firewalls, AWS Security Groups, to regulate incoming traffic to AWS EC2 instances and monitored user activity and governance of AWS accounts with CloudTrail. • Designed an AWS VPC network and configured security groups and Elastic IPs and utilized EC2 Container Service for running Docker containers on EC2 instances.• Constructed RESTful APIs using API Gateway and Lambda functions with Cloud Formation templates and the AWS Serverless Application Model.• Improved the Bastion service for accessing AWS instances from a local network and created an RD Gateway to secure access to server instances.• Integrated Jenkins with AWS EC2 to start and terminate slave instances as needed and established a Docker Registry for in-house docker images for the CI/CD system.• Managed containerized applications with Kubernetes and deployed Pods and utilized MiniKube to run Kubernetes locally.• Configured MongoDB and wrote queries to validate data, as well as tuned performance of MongoDB databases. • Created Chef cookbooks and recipes for provisioning pre-prod environments and deploying automation, WebLogic domain creation, and proprietary middleware installations. • Implemented Ansible and Ansible Tower for automation, deployment, and change management, and built custom Ansible modules in Python. • Established a Continuous Integration and Continuous Delivery environment with Jenkins, utilizing Groovy scripting and Maven, and developed Unix Shell, Perl, and SQL scripts for data loading. • Monitored various system components with Nagios and developed capacity dashboards and reports with Splunk. Designed and implemented an end-to-end transaction processing system using the ELK stack, with real-time app log uploading to a log management system, and an audit log of JSON Web tokens using Elasticsearch.

• Subversion branching, merging, and tagging were created and maintained across production releases, with builds performed using continuous integration and maven build scripts.• Source code management best practices were promoted among development, QA, and solution teams.• Involved in building and deploying EAR/WAR files with configuration settings.• Build and deployment scripts were developed using Maven as the build tool in Jenkins, allowing for moving from one environment to another.• Jenkins was installed for continuous integration and shell scripts were written for end-to-end build and deployment automation, with Jenkins used to automate most build-related tasks.• The source code repository was managed and controlled, using Subversion and Git.• Jenkins was configured to retrieve code from SVN and GIT, analyze using SonarQube/Sonar Scanner, build using Maven and ANT, perform Selenium tests using TestNG, and store successfully built artifacts in Nexus.• Participation in the release cycle of the product involved environments such as development, QA, UAT, and production.• JIRA was used for bug ticket creation, storyboarding, and pulling reports from the dashboard.• Build and release processes were automated using ANT scripts and shell scripts.

• Installed, administered, and maintained Linux/Windows operating systems in the computer laboratory.• Configured network printers and installed client/server applications, defined, and set up network protocols, Network File Services (NFS), and Network Information Services (NIS).• Established non-IP point-to-point network connections that linked cluster nodes directly, providing an alternate heartbeat path for a cluster that utilized a single TCP/IP-based network.• Tuned to increase the performance of the Linux Kernels• Scheduled cron jobs and managed job scheduling in production systems hosting the institute's applications.• Installed and maintained software, administered peripherals.• Managed security, users and groups, network services, monitored performance and resources, and performed daily backup and restore operations.• Set up and administered a DNS server.• Utilized shell scripting for automating tasks and upgrading systems.• Carried out other standard system administration duties such as monitoring the system, managing network support, and providing user support.