O2 Central is a mobile network operator and the principal commercial brand of Telefonica UK Limited, which is part of the Global Telecommunications group Telefonica S.A, Headquartered in Spain and operating in Europe, and North, Central and South America.

Job Responsibilities: As an AWS Cloud DevOps Engineer, responsible for taking care of AWS infrastructure provisioning, day to day build and release activities. These activities include build issues, deployment issues for multiple releases like maintenance release, enhancement release, bug fixes, emergency releases. Written Cloud Formation Templates (CFT) in JSON and YAML format to build the AWS services of Infrastructure as a Code. Migrated AWS infrastructure from one AWS account to another AWS account. Implemented Jenkins Shared libraries from scratch with different CI and CD pipelines.(maven Pipeline, Pipeline and terraform Pipeline etc...) Moved all Jenkins pipeline jobs from one Jenkins server to another Jenkins server along with its Secret Credentials. Implemented lot of terraform modules to reuse the code. Implemented total CI and CD process with AWS Code Pipeline, Code Build and Code Deploy end to end. Created GitHub repositories to publish project documentation and integrated these repositories with Jenkins to automate. Written Jenkins files in groovy language to implement CI CD process. Integrated Jenkins and Code Pipeline with Slack channels to get alerts and resolved connectivity issues on IAM roles and resources. Monitoring all AWS resources and created custom dashboards using AWS CloudWatch. Implemented cross account access roles with suitable IAM polices in AWS. Granting access to the different users for GitHub/AWS/Jenkins services. Worked on Automation of adding resource tags to AWS resources while creation of AWS resources with CloudFormation. Used AWS Config as centralized dashboard to get all Compliance and non-compliance resources by creating rules.

Environment: AWS (EC2, S3, Lambda, VPC, EBS, ELB, Cloud Watch, IAM, SNS, GIT, Maven, Jenkins, Nexus, Tomcat, Docker, Kubernetes, Python, Shell Scripts, Bash Unix/ Linux environment.

Job Responsibilities: Involving in Implementation of various AWS cloud Application using Amazon EC2, S3, Elastic Load Balancing (ELB), Auto scaling, Elastic Block Storage (EBS), Cloud Watch, Identity Access Management (IAM), Implementing Virtual cloud platforms using Amazon Virtual Private Cloud (VPC). Experience in AWS provisioning by creating EC2 Instances and configuring all necessary services like Security, EBS, and S3. Implemented & Maintained the Branching and Build/Release strategies utilizing GIT source code management. Implemented CI/CD process using Jenkins along with shell scripts to automate routine jobs Setup GitHub repositories, creating branches, tags, creating users and groups and assign permissions Configuring and setting up Jenkins created Jobs for automating the build process. Installing and configuring of Apache Tomcat as webserver to deploy web applications. Installing and configuring of DevOps tools like Git, Maven, Jenkins, Tomcat, and Docker. Used Maven as build tool for Java based projects and having knowledge on Pom.xml Creating new jobs in Jenkins and managing the build related issues. Used Role based strategy plug-in to assign roles to the Jenkins users. Experience in deploying WAR, JAR, and EAR files in Apache Tomcat servers. Coordinating with the Development team to fix the Build related issues. Implemented CI/CD process using Jenkins along with shell scripts to automate routine jobs. Created Jenkins pipelines jobs by using Jenkins file and also enabling build triggers to automate Jenkins jobs. Implemented the setup for Master slave architecture to improve the Performance of Jenkins. Creating CI/CD pipelines by integrating Git, GitHub, ant, maven, Jenkins, and AWS. Used Zabbix as monitoring tool for AWS instances. Solarwinds for Database Monitoring

Environment: AWS (EC2, S3, VPC, EBS, ELB, Cloud Watch, IAM, AutoScaling, SNS), GIT, Maven, Jenkins, Apache Tomcat, Docker, Shell Scripting.