Hadoop, Kafka, Redis, Elasticsearch, Solr, HBase, Cassandra & DataStax OpsCenter, RabbitMQ, MongoDB, MySQL, Riak, Memcached, Couchbase, HDFS, Yarn, Hive, Impala, Apache Drill, ZooKeeper, Consul, Mesos, Spark, Cloudera, Hortonworks, MapR, IBM BigInsights, Neo4j, Travis CI, Infrastructure - Linux, DNS, Whois, SSL Certs, Yum Security Updates. Products: Datameer, H2O, WanDisco, Zaloni
