DevOps Engineer

Ramachandran Pudhurajan

Phone Number: 347-***-**** Email Address: *********@*****.*** Work Authorization: GC Location: Denver Summary

• Senior DevOps and Systems Engineer with 10 years of experience supporting large-scale enterprise infrastructure environments across Linux and cloud platforms. Strong background in Linux system administration, troubleshooting complex production issues, and performing root-cause analysis across distributed systems. Experienced in automating infrastructure and operational workflows using Python, Bash, and PowerShell in DevOps environments.

• Proven expertise in CI/CD pipeline engineering using Jenkins, Git, and Ansible, configuration management, and infrastructure automation across AWS, Azure, and GCP platforms. Solid understanding of Windows Server environments and IIS-based web applications, supporting hybrid enterprise workloads. Adept at improving operational efficiency, deployment reliability, and system performance in highly available enterprise environments. Skills

Cloud Platforms

Linux (RHEL, Ubuntu, CentOS), Windows Server

Administration

Linux Administration

System performance tuning, log analysis, troubleshooting production incidents, root-cause analysis, process management, filesystem management, networking

diagnostics

Web & Application Servers

Apache, Nginx, Microsoft IIS, Tomcat

Cloud Platforms

Linux (RHEL, Ubuntu, CentOS), Windows Server

Administration

Cloud Platforms

Linux (RHEL, Ubuntu, CentOS), Windows Server

Administration

Cloud Platforms

Azure - Azure Active Directory Azure AD/Entra ID,

Managed Identities, Role-Based Access Control (RBAC) Storage Account, Virtual Network VNet, Azure

OpenAI, Azure Cognitive Services, VMs, VM scale sets, Azure Load balancer, Private Endpoints, App Services, Azure Functions, Databricks, Private Link, Key Vault, Azure Container Registry (ACR), Azure Kubernetes

Service (AKS), Resource Groups.

AWS - Lambda, EKS (Elastic Kubernetes Service), ECS, ECR, DynamoDB, CloudFormation, Step Functions,

CodeCommit, CodeBuild, CodePipeline, S3, VPC,

CloudFront, Security Group, ELB, Identity and Access Management IAM, Secrets Manager, CloudWatch,

CloudWatch Alarms, Resource Groups, Resilience Hub, SQS, SNS, Route 53, Event Bridge, EC2 Autoscaling, EC2, EBS, EFS.

GCP – GKE, GCR, IAM, Compute Engine, Cloud

Storage

Infrastructure as Code (IaC) Tools

Terraform, Terragrunt – Multi-cloud provisioning

(Azure, AWS, GCP), Modular terraform design, State management and remote backends, Workspaces &

Environment Separation, AzureRM AWS providers.

AWS CloudFormation, Bicep, ARM Templates

Configuration Management Tools

Ansible

Continuous Integration & Continuous Deployment

Tools

Azure DevOps – Repos, Pipelines, Boards, Artifacts, Rest API, Azure DevOps Service Connections, Agent

pools, Azure Pipelines (YAML), Reusable YAML

pipeline templates, Approvals and Environments,

Variable and Variable groups

Jenkins – Jenkins Shared Library, Credentials

Management, Kubernetes based Jenkins agents, Artifact Management.

GitHub Actions – Reusable Workflow Deployments,

GitHub Runner, Secrets, Environments, Parallel

execution, Event Based Triggers

Gitlab CI/CD, Bitbucket, Argo CD, Flux

Build Tools

Maven, Gradle

Containerization Tools

Docker, Kubernetes (AKS, EKS, GKE), Helm

Artifact Registry

JFrog, Nexus, Azure Artifacts

Source Code Management

GIT, GitHub, Gitlab, Bitbucket, Azure Repos

Logging & Monitoring Tools

Splunk, CloudWatch, Grafana

Scripting & Programming Languages

Python, Shell, JavaScript, Core Java, Java Springboot. Java script

Databases

MySQL, PostgreSQL, DynamoDB

Testing Framework

JMeter, Sonarqube, Taurus, Cucumber

Bug Tracking Tools

JIRA, ServiceNow

Work Experience

Niha Technologies 03/2023 – present Denver, United States Project: Cigna Corporation – Senior DevOps Engineer

• Supported enterprise-scale Linux infrastructure environments, performing troubleshooting and root cause analysis for system, application, and CI/CD failures across distributed environments.

• Administered and maintained Linux-based build and deployment servers, optimizing system performance, disk utilization, and process monitoring.

• Designed and maintained Jenkins-based CI/CD pipelines for automated application builds, testing, and deployments across multiple environments.

• Automated operational workflows using Python and Bash scripting, reducing manual intervention in infrastructure provisioning and deployment tasks.

• Implemented configuration management using Ansible to maintain consistent server configurations and automate application deployment across Linux hosts.

• Managed source control workflows using Git and Subversion (SVN) with integrated CI/CD pipelines.

• Collaborated with development teams to troubleshoot deployment issues and perform root cause analysis on production incidents.

• Maintained operational documentation and deployment runbooks using Confluence, while tracking issues and releases through JIRA.

• Designed, configured, and managed Jenkins Controller with Kubernetes-based agents, implementing Groovy-based Jenkins pipelines and Shared Libraries to standardize CI/CD workflows across multiple teams.

• Built and maintained Jenkins Shared Libraries to enforce reusable pipeline logic, integrating SonarQube for code quality analysis and JFrog Artifactory for artifact versioning, publishing, and promotion.

• Implemented GitOps-based continuous delivery using Argo CD, managing declarative Kubernetes deployments on AWS EKS and ensuring environment consistency through Git as the single source of truth.

• Automated cloud infrastructure provisioning using Terraform for AWS resources and EKS clusters and used Helm charts for Kubernetes application packaging and deployment. Infrastructure & System Administration

• Linux system administration (RHEL, Ubuntu, CentOS)

• Windows Server administration

• IIS Web Server configuration and troubleshooting

• Server monitoring and incident troubleshooting

• Enterprise infrastructure support and operational maintenance

• Root cause analysis and incident resolution

Mphasis Limited 06/2020-02/2023 Bangalore, India

Project HP: Senior DevOps Engineer

• Managed large-scale enterprise Linux environments supporting CI/CD pipelines and containerized applications.

• Administered and monitored Linux servers used for build systems, container workloads, and application hosting.

• Developed automation scripts using Python, Bash, and PowerShell to streamline infrastructure provisioning, monitoring, and operational tasks.

• Built and standardized CI/CD pipelines using Jenkins and Azure DevOps, improving release reliability and reducing deployment failures.

• Supported hybrid infrastructure environments including Linux servers and Windows-based services running IIS web applications.

• Automated server provisioning and configuration using Ansible, improving environment consistency across development, QA, and production systems.

• Troubleshot system performance issues, analyzing logs and metrics to identify root causes of application and infrastructure incidents.

• Architected and standardized CI/CD platforms across multiple engineering teams, designing Azure DevOps with Kubernetes-based agents and reusable Azure Yaml templates, significantly improving pipeline consistency and developer productivity.

• Designed and managed secure Azure infrastructure using Microsoft Entra ID (Azure AD), Managed Identities, and RBAC, provisioning resources such as VNets, Storage Accounts, Key Vault, Private Endpoints/Private Link, Load Balancers, VM Scale Sets, AKS, ACR, App Services, and Azure Functions across multiple subscriptions.

• Migrated large-scale Azure infrastructure to Terraform (including Terraform Enterprise), replacing manually created resources with fully automated, version-controlled IaC pipelines

• Built and standardized CI/CD pipelines in Azure DevOps using YAML-based reusable pipeline templates, integrating Azure Repos, Service Connections, Agent Pools, Artifacts, and REST APIs, enabling development teams to self- service pipeline creation and deployments.

Test And Verification Solutions, Ltd 04/2019 – 06/2020 Chennai, India Software Engineering – DevOps

• Worked collaboratively with development and operation teams to identify integration needs, ensuring that the Jenkins pipeline met the necessary requirements.

• Designed a Jenkins shared library and executed automated pipelines using Jenkins.

• Developed Helm charts for automating the release workflow of Kubernetes deployments.

• Streamlined and automated the deployment process of applications on a Kubernetes cluster, including defining and installing applications to managing them effectively.

• Acted as an Architect System Engineering by delivering framework which was built using Java runtime on Springboot, incorporating the ServiceKernel runtime to enhance the development and delivery of Microservices with streamlined recipes.

• Created, automated, built, and deployed scripts using Maven and initiated them through Jenkins to transition between environments.

• Utilized Maven for building Java-based microservices and integrated them with Nexus Repository. Verizon 10/2018 – 04/2019 Chennai, India

DevOps Engineer

• Designed and implemented CloudWatch alarms by integrating log groups with alert groups across multiple applications, enhancing system reliability through real-time notifications for failure detection.

• Automated server provisioning and maintained consistent configurations across all infrastructure systems using Ansible, ensuring optimal performance and compliance with desired state specifications.

• Leveraged Argo CD for Kubernetes-native continuous deployment, automating the pipeline for pushing code updates from Git repositories directly to Kubernetes resources. This streamlined infrastructure configuration and application deployment, enhancing efficiency and developer control over the entire deployment lifecycle.

• Implemented Kubernetes CronJobs to automate essential scheduled tasks, including backups and report generation, leveraging Cron syntax for precise timing. This ensured consistent operational efficiency and data integrity across the environment.

• Designing cross-account access in AWS involves implementing security measures to ensure that multiple users and services can securely access resources across different AWS accounts. The Global Solutions 01/2017 – 10/2018 Chennai, India Software Engineer DevOps

• Automated application deployments and updates and orchestrated deployment using Kubernetes, Automated Compute Engine and Docker Image Builds with Jenkins and Kubernetes and Integrated Kubernetes with network, storage, and security to provide comprehensive infrastructure and orchestrated containers across multiple hosts.

• Developed and maintained a shared library in Jenkins using Groovy scripting language to encapsulate reusable pipeline functionality and promote code sharing across projects.

• Collaborated with development teams to understand their requirements and translate them into reusable pipeline functions and abstractions.

• Implemented Jenkins pipelines using the Scripted Pipeline syntax in Groovy, defining stages, steps, and integration points based on project needs.

• Hands-on experience in automating builds and deployment processes using Shell scripting. Evergreen Solutions 01/2015 – 12/2016 Chennai, India Software Engineering Analyst

• Worked collaboratively with development and operation teams to identify integration needs, ensuring that the Jenkins pipeline met the necessary requirements

• Designed and developed microservices using Spring Boot Framework, including defining service boundaries, API contracts, data models, and communication protocols. Information Technology Bachelor of Technology. Certification: Java / J2EE, AWS

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