Accumulo, ActiveMQ, Akka, Amazon Web Services (AWS), Angular, Ansible, Apache, Apache NiFi, Apollo, Artemis, ASP.NET, Atlassian, Backbone.js, Bash scripting, Bootstrap, Cassandra, CentOS, CoffeeScript, CSS, Cypress, Docker, Docker Compose, Docker Swarm, Drools, Eclipse, Elasticsearch, ExtJS, Flink, Git, Gitlab, Gradle, Grafana, GWT, Hadoop, HAProxy, Hazelcast, Heron, Hibernate, HTML, IDE, Firebug, Java, JavaScript, JBlocks, Jenkins, Jetty, Jira/Confluence, JMS, jQuery, JSON, Kafka, KeyDB, Kibana, Kubernetes, Linux, Logstash, Maven, MongoDB, MBatis, MySQL, nginx, Node.js, OpenSSL, Oracle, PKI Certificate Administration, Percona, Postgres, Prometheus, Pulsar, Puppet, Python, Rancher, React.js, Redis, RESTful Web Services, SaltStack, Scala, Selenium, SOAP Web Services, Splunk, Spring, Spring Boot, Spring Cloud, Spring MVC/Beans, SQL, Squirrel, Storm, Subversion, Swagger, Sybase, Terraform, Terragrunt, Tomcat, Typescript, Vue.js, Web Security, XML, Zookeeper. Front End User Interface (UI) Development, Middle-Tier Development, Back-End Development, Full Stack Development, Agile Software Development Practices, Application Programming Interface (API) principles, Artificial Intelligence, Attribute Based Access Control (ABAC), Automated Testing, Cloud Analytics, Cloud-based System Administration, Containerization, Continuous Integration / Continuous Development (CI/CD), Data Modeling, DevOps, Distributed Web Applications, Firewall Administration, Infrastructure as a Service (IaaS), Kanban Software Development Practices, Large Language Models, Machine Learning, Microservices, Monitoring and Alerting, Network Engineering, Recommender Services, Relational Databases, Role Based Access Control (RBAC), Scripting, Service Oriented Architecture (SOA), Systems Engineering, Technical Documentation, User Accessibility, Virtual Machines, Web Services.