I have a total of 9 years of experience in the IT industry, with 6 years of specialized experience in Big Data Administration using Hadoop. I am a Hortonworks Certified Administrator (HDPCA) and am highly proficient in the Hortonworks distribution of Hadoop and its ecosystem. My expertise includes: • Successfully deploying, administering and configuring security for over 50 Hadoop clusters. • Optimizing performance of Hadoop clusters and achieving a 20% increase in overall cluster performance. • Setting up both core and customized Hadoop clusters for various clients and handling an average of 3-4 clusters at a time. • Extracted and imported data from various sources (e.g. JSON, CSV, Excel) for over 15 projects. • Troubleshooted and resolved an average of 30 technical issues per quarter for Hadoop clusters. • Managed cluster maintenance, security, high availability and performance tuning for more than 30 Hadoop clusters. • Conducted benchmarking operations and reported on nodes, implemented disaster recovery solutions, automated backups and documented best practices. • Conducted root cause analysis for over 15 technical incidents and implemented preventive measures. • Provided operational support for at least 5 proof of concept projects and ongoing administration of existing big data technology stacks.