Rajkumar Kumawat
Cyber Security Gold Medalist 🇮🇳 | Big Data & Linux Engineer | AI + Cybersecurity Tool Builder | Medium Writer 📝 | Hadoop, Spark, Kafka, Solr, Gathr | Infra Automation @ ClearTrail Technologies
- Role
- Senior Technical Support Engineer at ClearTrail Technologies
- Location
- New Delhi, IN
- LinkedIn followers
- 500 followers
About Rajkumar Kumawat
Hi, I’m Rajkumar Kumawat — a passionate Big Data & Linux Engineer with a strong…
Experience
Senior Technical Support Engineer
May 2022 — Present · Delhi, IN
Working at the intersection of Big Data and Linux infrastructure, I lead the deployment, administration, and monitoring of enterprise-scale Hadoop ecosystems and server environments. Infrastructure & Network Management* Managed on-site production rack setups and implemented iDRAC for remote server control.* Configured switches, firewalls, and VLANs to support inter-data center connectivity (Delhi–Mumbai). Server & Cluster Operations* Installed and configured Linux servers (CentOS/RHEL) for big data clusters.* Deployed and maintained **Hadoop ecosystem components**: HDFS, YARN, MapReduce, Spark, Kafka, ZooKeeper, NIFI, HBase, Redis, Ambari, Ranger, and SOLR. Automation & Scripting* Created Bash/Python scripts for task automation, job scheduling (cron), and rsync-based sync jobs.* Automated release deployments and cluster health checks. Monitoring & Performance* Used Zabbix, Ambari, and shell tools to monitor system metrics and fine-tune performance.* Tuned JVM, HBase, and Spark settings to reduce latency and improve throughput. Documentation & Support* Authored SOPs for backup/restore, failovers, and cluster workflows.* Reported issues and managed sprints via Jira.🤝 Client Collaboration* Interacted directly with customer teams for issue resolution, feature discussions, and support escalations.* Conducted weekly syncs, providing health reports and improvement suggestions. Release & Production Support* Led smooth rollouts of production releases with minimal downtime.* Provided 24×7 support for live environments, ensuring data integrity and system uptime.
Education
MATRIX, Sikar
Foundation course
2018 — 2019
Bharitya Skill Development University Jaipur
Course
2019 — 2022
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