Raj Kharalkar
Pune
Summary
7 years of results-driven experience as a DevOps and Big Data Engineer, specializing in Kubernetes, Docker, Terraform, Jenkins, AWS and Hadoop. Skilled in automating deployments, building scalable CI/CD pipelines, managing cloud infrastructure, and optimizing Hadoop clusters. Possesses strong expertise in cluster monitoring, troubleshooting, capacity planning and improving system reliability across large-scale production environments.
Overview
7
7
years of professional experience
Work History
DevOps Engineer
Cybage Software Pvt Ltd
06.2022 - Current
- Proficiently used Terraform for IaC to manage AWS services (EC2, VPC, IAM, S3, SGs).
- Architected and maintained enterprise CI/CD pipelines using Jenkins (Groovy), reducing deployment time by 60%.
- Designed scalable Jenkins Master-Slave architecture including RBAC, plugin management, and backup strategy.
- Extensive experience with Kubernetes for container orchestration including deployments, scaling, and workload management.
- Used Helm and Kustomize for Kubernetes manifest templating and environment standardization.
- Implemented GitOps workflows using Argo CD for automated deployments.
- Automated configuration and deployments using Ansible.
- Implemented Prometheus + Grafana monitoring with 15+ dashboards for cluster and app observability.
- Deployed and managed CDE, CDW, and CML in Cloudera CDP Public Cloud.
- Supported and maintained Hadoop ecosystems including HDFS, Hive, Yarn, Spark, and Impala.
- Led migration of on-prem Hadoop clusters to cloud with data replication and synchronization.
- Managed Linux servers (CentOS/Ubuntu) including performance tuning and OS hardening.
- Performed log analysis and root-cause investigations across Hadoop, Kubernetes, and platform services.
Hadoop Administrator
WMOLEX Pvt Ltd
09.2018 - 05.2022
- Strong exposure to Big Data architecture with effective management and monitoring of Hadoop ecosystems.
- Optimized AWS cloud infrastructure costs by applying best practices, resizing compute and storage resources, and eliminating unused assets.
- Managed and troubleshot multiple Hadoop clusters across production and non-production environments.
- Provided ongoing support for Hadoop environments, ensuring high availability, uptime, and SLA adherence.
- Performed performance monitoring and fine-tuning on Linux systems for optimal Hadoop cluster efficiency.
- Configured High Availability for NameNode, Hive, and Yarn to ensure uninterrupted operations.
- Handled commissioning, decommissioning, rebalancing, and node lifecycle management to maintain cluster health.
- Conducted Hadoop cluster planning, capacity forecasting, and expansion activities.
- Implemented Kerberos-based security for CDH clusters using one-way authentication.
- Analyzed logs across Hadoop ecosystem services (Hive, HDFS, Yarn, Impala, Spark) to identify issues and resolve incidents.
- Configured Ranger for role-based authorization and privilege management in Hive.
- Implemented backup strategies and disaster recovery configurations for Hadoop clusters.
- Worked extensively with AWS IaaS services including VPC, EC2, S3, IAM, Security Groups, and firewall configurations.
Education
B.Tech/B.E. - Engineering
Rashtrasant Tukadoji Maharaj (RTMNU)
Nagpur, INDIA01.2018
Skills
- AWS
- Terraform
- Jenkins
- Cloudera Data Platform
- Kubernetes
- Grafana
- GitHub
- Docker
- Hadoop
- Ansible
- JIRA
- Infrastructure automation
- Linux operating system
- Monitoring and logging
- Containerization technologies
Timeline
DevOps Engineer
Cybage Software Pvt Ltd
06.2022 - Current
Hadoop Administrator
WMOLEX Pvt Ltd
09.2018 - 05.2022
B.Tech/B.E. - Engineering
Rashtrasant Tukadoji Maharaj (RTMNU)