Senior Hadoop Infrastructure AdministratorTech Tammina LLCJob DescriptionExperience, Skills, Academic:Minimum 4+ years and ideally 7+ years of relevant hands-on experience and at least 3 years of administration of cluster environmentHands-on experience in large scale Hadoop cluster management and infrastructure designHands-on experience with the Hadoop infrastructure implementation and configuration of Hadoop HDFS, Hbase, Zookeeper, Oozie, Sphinx/Lucene, Pig, Hive or other big data tools, frameworksExperience in implementation and configuration of Cloudera and other equivalent Hadoop distributions such as IBM and Hortonworks; hands-on experience in at least one of the platforms is required.Ability to balance and tune cluster nodes for performanceExcellent Linux administration skills and understanding of system performance areas (memory, swap, disk i/o, network i/o, etc.)High proficiency with Linux/Unix and open source tools/platformsDemonstrated experience tuning large application systems - must know how to benchmark and stress test under the highest simulated traffic conditionsUnderstanding of JVM administration and crash trace analysisUnderstanding various JAVA OPTS related to hadoopUnderstanding zookeeper and zkdump configuration and debuggingUnderstanding of FIFO, Fair scheduler and Capacity scheduler and their usageAbility to configure Oozie workflows, jobs and tracking logs to debug issuesMust understand how to use LVM on MapRFSExtremely good in communication and should be having excellent technical skill to ideate with technically challenging environment.QualificationsDesign and build robust Hadoop cluster for Big Data infrastructureDefine and document cluster and node configuration standardsProvide subject matter expertise to solve problems associated with Cloudera implementation of Hadoop distribution into the cluster from ground upDemonstrate strong personal communication skillsExperience in high scale or distributed RDBMS