Rajesh Digumarti

Hyderabad

Summary

Senior OpenShift and Kubernetes Administrator with 12+ years of experience in Linux-based enterprise environments, specializing in managing and optimizing OpenShift platforms. Strong expertise in container orchestration, cluster operations, and implementing DevOps practices including CI/CD, automation, and GitOps. Proven ability to enhance platform reliability, security, and scalability while enabling cloud-native adoption. Skilled in troubleshooting production issues and driving operational excellence across complex distributed systems.

Overview

years of professional experience

Certification

Work History

Senior Technical Consultant / OpenShift & Kubernetes Instructor

Red Hat

Hyderabad

02.2014 - Current

Managed and supported OpenShift Container Platform 4.x clusters in production datacenter environments, ensuring high availability and reliability.
Configured and maintained ingress routing, services, and network policies for secure application traffic management and cluster networking.
Designed and implemented CI/CD pipelines using OpenShift Pipelines (Tekton) to automate microservices build and deployment processes.
Administered Role-Based Access Control (RBAC) for users, service accounts, and groups to enforce secure access management.
Implemented and enforced Security Context Constraints (SCCs) to restrict privilege escalation, host access, and filesystem permissions in production workloads.
Integrated GitOps workflows using Argo CD for multi-cluster OpenShift deployments, improving deployment consistency and version control.
Delivered enterprise training programs on OpenShift, Kubernetes, Linux, and automation technologies to corporate customers across APAC.
Conducted Red Hat certification training and exam delivery for RHCSA, RHCE, and OpenShift certification tracks.
Developed and delivered hands-on labs for container platform deployment, cluster administration, and troubleshooting scenarios.
Facilitated technical workshops and enablement sessions focused on cloud-native application deployment and DevOps practices.

Senior System Engineer

Adduri Technologies

06.2013 - 02.2014

Configured and optimized F5 load balancers for high availability and performance.
Executed disaster recovery exercises and infrastructure migrations, enhancing system resilience.
Delivered operational support for web infrastructure, ensuring reliability of Apache, Tomcat, and TCServer.
Administered SSL certificates and DNS records, facilitating secure public application releases.

Senior Engineer

IGIAT

05.2010 - 06.2013

Administered RHEL 5/6 systems, ensuring system reliability through effective patching, NFS configuration, and monitoring.
Monitored CPU, memory, and system logs to ensure optimal system stability and prevent downtime.
Supported enterprise customers by resolving Linux issues and implementing infrastructure upgrades to enhance system performance.

Education

Master of Science - Computer Applications

ICFAI University

Skills

Strong expertise in OpenShift Virtualization, container orchestration, and Linux system administration, with hands-on experience in implementing DevOps practices such as CI/CD pipelines (Tekton), GitOps workflows (Argo CD), and Ansible automation Proficient in RBAC, SCC, NetworkPolicies, and OpenShift SDN networking, ensuring secure and scalable platform operations

Skilled in cloud platform management, troubleshooting complex production issues, and driving reliability across distributed systems Known for strong analytical and critical thinking, strategic decision-making, leadership capabilities, and adaptability to emerging technologies, including foundational knowledge of artificial intelligence concepts