Apache Cassandra, Application Programming Interface (API), Elasticsearch, Engineering Management, Enterprise Protection, Information Technology & Information Systems, JAAS (Java Authentication and Authorization Service), JCA (Java Connector Architecture), JSSE (Java Secure Socket Extension), Java, Java Cryptography Extension (JCE), Java Platform Enterprise Edition (Java EE/J2EE), Microservices, Microsoft Windows Azure, MongoDB, MySQL, NoSQL, Node.js, Oracle, Platform as a Service (PaaS), PostgreSQL, React.js, Relational Databases (RDBMS), SQL (Structured Query Language)