Senior DevOps Engineer - Cloud, Kubernetes, IaC, CI/CD

Tejasekhar Reddy Bojjireddygari

***************@*****.*** +1-201-***-**** LinkedIn

Professional Summary:

Cloud and DevOps professional with 14+ years of IT experience specializing in cloud and hybrid architecture, on-premises to AWS migrations, Kubernetes platforms and Linux infrastructure supporting mission-critical enterprise systems.

Proven expertise in designing, architecting, and delivering scalable, secure, and cost-optimized solutions across AWS, RedHat OpenShift, Rancher RKE, Amazon EKS and on-prem Kubernetes environments.

Strong background in application and platform modernization, including microservices architecture, container orchestration, and migration of legacy workloads to cloud-native and hybrid AWS solutions.

Deploy, configure, and maintain RedHat OpenShift Container Platform in On-Premises (BareMetal & VMware) environments.

Extensive hands-on experience with Infrastructure as Code (IaC) using Terraform to automate end-to-end AWS infrastructure provisioning, including VPCs, Nnetworking, IAM, EC2, EKS, EMR, MSK, Lambda, RDS, S3 and CloudWatch.

Develop and maintain CI/CD pipelines using Git, GitLab, ARGOCD and Helm.

Administer Jenkins (installation, RBAC, configuration, plugin management, backup/restore, Jenkins files, automation).

Deep knowledge of streaming and middleware platforms such as Apache Kafka (Confluent & Apache), along with Tomcat, Apache, Elasticsearch/OpenSearch, enabling resilient, high-throughput distributed systems.

Strong DevSecOps and governance focus, implementing IAM least privilege, RBAC, security hardening, container security scanning and compliance-aligned architectures.

Extensive experience designing CI/CD and release architectures using Jenkins (multi branch pipelines), GitHub Actions, Docker, Helm, and Kubernetes, enabling automated, reliable application delivery.

Managed and secured application delivery infrastructure by implementing and monitoring CDN configurations, Web Application Firewall (WAF) policies, and Site Shield protections to enhance performance, prevent security threats, and ensure high availability of web applications.

Implement OpenShift networking (network policies, services, ingress, egress, routes, etc.).

Configure and optimize OpenShift Data Foundation (ODF)/OpenShift Container Storage (OCS) for persistent storage, storage classes, and lifecycle management.

Secure containerized applications by integrating SonarQube, HPE Fortify, Twistlock, and Black Duck into CI/CD pipelines.

Proven ability to troubleshoot complex production issues, improve platform reliability, and design high availability, disaster recovery and observability frameworks using Prometheus, Grafana, FluentD/FluentBit and Elastic/OpenSearch.

Solid expertise in PostgreSQL architecture and administration, including performance tuning, backup and recovery, and HA design.

Experience architecting Big Data solutions on AWS, leveraging EMR, Spark, HDFS, Hive, HBase, YARN and Zookeeper.

Perform installation, configuration, security hardening, and maintenance of Linux (RHEL, CentOS, Ubuntu) and Windows servers.

Perform storage management, performance tuning, and volume optimization for Hadoop clusters.

Hands-on experience in SSL certificate management, cronjobs, startup/shutdown scripting, and application performance tuning in production environments.

Education:

Bachelor of Engineering from Anna University – 2008.

TECHNICAL SKILLS:

Cloud Platforms: AWS

Container Orchestration: Redhat OpenShift, Kubernetes, AWS EKS, Rancher RKE

Containerization: Docker, Containerd and Podman

Infrastructure as Code (IaC): Terraform & CloudFormation

Configuration Management: Ansible

Version Control & Artifact Management: Git, GitLab, Nexus, ACR, SVN, BitBucket

Build & Package Management: Maven, Gradle, NuGet, CPM (CMake Package Manager)

CI/CD Tools: Jenkins, GitLab CI/CD, ARGOCD, GitHub Actions

Application & Middleware Servers: Apache, Tomcat, WebLogic, JBOSS, WildFly, ServiceMIX

Observability & Monitoring: Grafana, Prometheus, AWS CloudWatch, Splunk & AppDynamics

Issue Tracking & ITSM Tools: Remedy, ServiceNow

Operating Systems: RHEL, CentOS, Ubuntu & Windows

Scripting & Automation: Bash, Shell Scripting, HTML, CSS

Storage: S3, EBS, NetApp & ODF

Professional Experience

Verizon USA SR DevOps Engineer Aug 2024 – Till date

Skills: AWS, RedHat OpenShift Container Platform (Operators, OpenShift Data Foundation, OpenShift Pipelines, Image Registry) Kubernetes, Docker, Podman, AWS Cloud Services (EKS, S3, ECS, EMR, EC2, EFS, EBS, RDS, OpenSearch, ECR, EMR, IAM, ELB, Amazon MSK, Secrets Manager, KMS, Lambda, Autoscaling, CloudWatch, etc.), Elasticsearch/PostgreSQL-DB Administration, Jenkins, GitLab, Kafka, A10 Networks Load Balancing

Roles & Responsibilities:

Develop and deploy cloud-native applications using AWS services (EKS, S3, ECS, EC2, EMR, Lambda, EBS, RDS, OpenSearch, ECR, EMR, Amazon MSK).

Deploy, configure, and maintain RedHat OpenShift Container Platform in On-Premises (BareMetal & VMware) environments.

Designed, deployed, and managed AWS infrastructure using Terraform CLI and AWS CLI.

Implemented infrastructure automation and deployments on AWS leveraging Terraform and AWS CLI tools.

Manage OpenShift services: Operators, OpenShift Data Foundation (ODF), Pipelines, Image Registry, Serverless, Routes, and S3-Compatible Storage.

Perform cluster scaling, node management, high availability (HA) setup, and cluster upgrades.

Configure and administer RBAC, LDAP authentication, and user management.

Implement OpenShift networking (network policies, services, ingress, egress, routes, etc.).

Configure and optimize OpenShift Data Foundation (ODF)/OpenShift Container Storage (OCS) for persistent storage, storage classes, and lifecycle management.

Develop and maintain CI/CD pipelines using Git, GitHub, GitLab, Jenkins, and Helm.

Administer Jenkins (installation, RBAC, configuration, plugin management, backup/restore, Jenkins files, automation).

Automate infrastructure provisioning using Terraform, Helm, and Kubernetes manifests.

Secure containerized applications by integrating SonarQube, HPE Fortify, Twistlock, and Black Duck into CI/CD pipelines.

Manage GitLab repositories (permissions, branching, merging, tagging, access control strategies).

Deploy and configure Grafana/Prometheus for OpenShift and AWS EKS monitoring.

Push container logs to Elasticsearch using FluentD/FluentBit.

Perform security hardening across OpenShift, AWS, and on-prem environments.

Implement security best practices for API access, container image security, role-based access control (RBAC), and OpenShift quotas.

Manage and administer AWS OpenSearch & On-Prem Elasticsearch clusters (deployment, index management, cross-cluster replication, snapshot/restore, security policies, cluster upgrades).

Troubleshoot Elasticsearch issues (e.g., unassigned shards, automation failures, cluster/node failures).

Build and administer Apache Kafka/Confluent Kafka messaging platforms for real-time data streaming.

Install, configure, upgrade, and maintain PostgreSQL databases.

Optimize database performance, indexing, and backup strategies.

Implement Big Data (Hadoop) ecosystem components: YARN, HDFS, HBase, Zookeeper, Spark, Hive.

Perform storage management, performance tuning, and volume optimization for Hadoop clusters.

Implement cost-optimization strategies (e.g., AWS Savings Plans, Kubernetes auto-scaling, S3 lifecycle policies).

Write Helm Charts, Kubernetes manifests, Dockerfiles, and Terraform modules to automate infrastructure deployments.

Continuously evaluate new tools/technologies for improving release automation, observability, and security.

Perform installation, configuration, security hardening, and maintenance of Linux (RHEL, CentOS, Ubuntu) and Windows servers.

Automate system operations and monitoring with Bash/Python scripting and Ansible.

Lumen Technologies India SR DevOps Engineer Sep 2020 – Jun 2024

Skills: Redhat OpenShift, Kubernetes, Rancher Kubernetes, AWS EKS, Docker, Maven, Jenkins, JBOSS, Tomcat, Apache Server, ColdFusion, Splunk, Fuse, Service Mix, GIT, sentry, Linux & Solaris, service now.

Roles & Responsibilities:

Installed, configured, deployed, and troubleshot OpenShift Kubernetes, AWS EKS.

Deployed and managed AWS infrastructure using Terraform and AWS CLI.

Set up & configured Jenkins for Java builds, integrating plugins to automate CI/CD pipelines, build Docker images, and publish them to the Nexus repository.

Developed Terraform scripts for provisioning AWS resources (EKS, IAM, VPC, ALB, Security Groups, RDS, KMS).

Automated EC2 provisioning using Terraform, ensuring efficient configuration management, patching, and software deployment.

Built and managed Docker containers in EKS clusters, leveraging Linux, Bash, Git, and Docker for streamlined operations.

Implemented DevOps best practices for system reliability, focusing on Kubernetes, EKS, IaC, IAM, and CI/CD.

Managed Kubernetes cluster networking using Rancher (Kubernetes & AKS) and Load Balancing solutions.

Configured and deployed containerized applications using Kubernetes and Docker.

Implemented monitoring & logging solutions with Prometheus and Grafana, creating dashboards and RBAC policies.

Developed CI/CD pipelines to automate builds, deployments, and infrastructure provisioning.

Integrated Git triggers & automation workflows using Jenkins, Git/GitLab, Ansible, and Jira.

Configured highly available JBoss & Tomcat clusters for enhanced performance and reliability.

Implemented zero-downtime deployments on Apache Web Server and JBoss Application Server.

Provided production support for J2EE applications running on JBoss, Tomcat, and Apache on Linux & Solaris environments.

Set up and managed performance monitoring tools such as AppDynamics and Sentry for Tomcat, JBoss, and Apache servers.

Tuned JVM performance by adjusting heap size, garbage collection strategies, and JDBC connection pools.

Generated Key & CSR certificates, configured, and upgraded SSL certificates in test and production environments.

Mentored junior engineers, documented recurring tasks, and facilitated cross-training initiatives.

CenturyLink Technologies, Healthcare, India DevOps Engineer Jul 2018 to Aug 2020

Skills: AWS, Rancher Kubernetes, AKS, Terraform, Kubernetes, Docker, GIT, Maven, ACR, Nexus, Jenkins, JBOSS, Tomcat, Apache Server, Splunk, fuse, service mix, sentry, and Linux & Solaris, Service now.

Roles & Responsibilities:

Installed, configured, deployed, and troubleshot Rancher (Kubernetes & AKS), AWS EKS, Docker, Kubernetes, Kafka, JBOSS, Tomcat, and Apache Web Servers.

Designed and managed public/private cloud infrastructures on AWS, including EC2, S3, EFS, RDS, VPC, Route 53, CloudWatch, Lambda, and IAM, enabling automated operations.

Installed, configured, and managed AWS EKS, Rancher, and AKS Kubernetes container platforms, including master and worker nodes.

Optimized Kubernetes networking and traffic management using Load Balancing solutions in Kubernetes, Rancher, EKS, and AKS.

Implemented IAM security & authentication solutions, including SAML, OAuth, LDAP, and Active Directory, for federated Single Sign-On (SSO).

Created and managed custom Docker images, tagging and pushing them to repositories for deployment.

Implemented Kubernetes monitoring solutions by installing Prometheus and Grafana, improving observability.

Installed and configured Jenkins with plugins for Git repositories, integrating SCM polling for automated builds with Maven.

Developed CI/CD pipelines for automated build, test, and deployment processes across multiple environments (DEV/TEST/STG/PROD).

Integrated Jenkins with DevOps tools, including Nexus and SonarQube, to enforce code quality and security compliance.

Managed Git repositories, handling source code control, branching, merging, and conflict resolution.

Implemented SSL certificate management, installing and upgrading SSL certificates in QA and production environments.

Configured and managed Node Manager for remote server administration and SSL communication with the Administrator server.

Installed and administered Apache HTTP 2.0 Web Server and IBM HTTP Server (IHS) in distributed system environments.

Provided expertise in distributed systems support, ensuring high availability and scalability of applications.

CenturyLink Technologies, World bank SR Software Engineer Mar 2016 to Jun 2018

Skills: Kubernetes, Rancher (Kubernetes & AKS), AWS EKS, Docker, Maven, Jenkins, JBOSS, Tomcat, Apache Server, ColdFusion, Splunk, Fuse, Service Mix, GIT, sentry, Linux & Solaris, service now.

Roles & Responsibilities:

Installed, configured, and managed AWS EKS, Rancher, and AKS Kubernetes container platforms, including master and worker nodes.

Optimized Kubernetes networking and traffic management using Load Balancing solutions in Kubernetes, Rancher (K8S & AKS).

Managed CI/CD pipelines for fully automated software development, ensuring seamless Continuous Integration, Delivery, and Deployment.

Configured AWS IAM Multi-Factor Authentication (MFA) for secure user authentication using Google Authenticator and AWS Virtual MFA.

Implemented authentication and authorization solutions using SAML, OAuth, LDAP, and Active Directory for federated Single Sign-On (SSO).

Created and managed custom Docker container images, tagging and pushing them to repositories for deployment.

Deployed Kubernetes monitoring solutions using Prometheus and Grafana, enhancing system observability.

Installed and configured Jenkins to support Java builds, integrating with Nexus for Docker image publishing.

Managed Kubernetes deployments and scaling, ensuring high availability through horizontal pod scaling and resource management.

Configured clustering for Tomcat & JBOSS for high availability and load balancing.

Resolved production incidents, change requests, and problems related to middleware infrastructure in distributed systems.

Utilized Ansible and Chef for automated server configuration and updates.

Developed infrastructure automation solutions for provisioning using Docker, Vagrant, and Red Hat Satellite.

Implemented DevOps solutions to streamline development, deployment, monitoring, and testing processes.

Provided expertise in troubleshooting using Traces, Logs, and Log Analyzers for system diagnostics.

Developed Terraform scripts for provisioning AWS resources (EKS, IAM, VPC, ALB, Security Groups, RDS, KMS).

Automated EC2 provisioning using Terraform, ensuring efficient configuration management, patching, and software deployment.

Built and managed Docker containers in EKS clusters, leveraging Linux, Bash, Git, and Docker for streamlined operations.

CenturyLink Technologies Software Engineer Jan 2012 to MAR 2016

Skills: Docker, PAAS, Maven, Jenkins, JBOSS, Tomcat, Apache Server, Splunk, fuse, service mix, GIT, sentry, and Linux & Solaris, service now.

Roles & Responsibilities:

Installed and administered CI/CD tools including Jenkins, Git, and Nexus for automated software delivery.

Configured Jenkins master-slave architecture, adding necessary plugins and optimizing scalability.

Implemented automated build and deployment processes, collaborating with development teams to resolve software configuration issues.

Managed build and release dependencies, coordinating across teams for seamless deployment.

Developed and executed application-specific deployment procedures, ensuring streamlined releases.

Managed nightly, weekly, and feature-based builds, optimizing release cycles.

Configured Jenkins SCM Polling for Git-based triggers, enabling automatic builds with Maven.

Created Jenkins jobs, integrating build automation, smoke testing, and notification systems.

Deployed Jenkins on Linux, setting up a master-slave build farm for parallel execution.

Integrated Jenkins with DevOps tools, including Nexus, SonarQube (code quality checks) for enhanced CI/CD workflows.

Administered Git repositories, performing merging, branching, and version control operations.

Worked with Docker containers, managing snapshots, directory structures, running containers, and removing images.

Installed and configured Nagios for network service monitoring and resource tracking.

Managed SSL certificates, including installation, upgrades, and enabling secure communication.

Implemented SSL communication between Administrator Server and Node Manager for enhanced security.

Troubleshot deployment issues using Traces, Logs, and Log Analyzers to maintain system reliability.

Installed, configured, and managed Apache HTTP 2.0 Web Server and IBM HTTP Server (IHS) for web hosting and load balancing.

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