Administrative Management, Algorithms, Amazon Web Services (AWS), Apache, Apache Cassandra, Apache CouchDB, Apache HBase, Apache Hadoop, Apache Hive, Apache Pig, Apache ZooKeeper, Big Data, C Programming Language, C++ Programming Language, CentOS, Certified Compensation Professional, Cloud Computing, Cloudera, Computer Science, Configuration Management, Data Processing, Data Science, Data Structures, Database Extract Transform and Load (ETL), Debugging Skills, Ecosystems, Groovy Programming Language, HTML (HyperText Markup Language), HortonWorks, IBM WebSphere DataStage, Informatica, Java, JavaScript, JavaServer Pages (JSP), Linux Operating System, MapReduce, Memory Management, Microsoft C# (C Sharp), Microsoft Windows Operating System, MySQL, Operating Systems, Oracle, Oracle Solaris (fka Sun Microsystems Solaris), PHP Scripting Language (PHP Hypertext Preprocessor), Performance Tuning/Optimization, Perl Programming Language, Python Programming/Scripting Language, Red Hat Linux Operating System, Security-Enhanced Linux (SELinux), Spring Framework, Unix Operating Systems, VMWare ESX/ESXi, XML (EXtensible Markup Language), XSD (XML Schema Definition), XSLT (Extensible Stylesheet Language Translation)