Programming languages

Java, Groovy, Kotlin, JavaScript

Frameworks, Technologies

Microservices, Self Contained Services, Spring (Framework, Boot, MVC, Data, Security, Integration), Webservices (REST, SOAP, Apache CXF, JAX-WS), Apache Kafka, Docker, Jetty, Apache Tomcat, docToolChain, Java Server Faces (Primefaces), Apache Solr, JAXB, Quartz, Velocity, Handlebars, Freemarker

Methods

Domain Driven Design (DDD), Behavior Driven Development (BDD), Test Driven Development (TDD), Clean Code, Continous Integration (CI), Continous Delivery (CD), DevOps, Scrum, Kanban, Clean Code

Logging, Monitoring

ELK Stack, Grafana, Prometheus, slf4j, log4j, logback

Standards

Json, XML, XSD, XSL, UML, SQL, HTML, CSS

Databases

JPA, Hibernate, Redis, Postgres, MySQL, Oracle, CouchDB, MongoDB, JDBC

Content-Management-Systems

Sophora, Joomla, Wordpress, Teamsite

Testing

Junit 4/5, Cucumber, JBehave, Mockito, Powermock, Spock, Geb, HTMLUnit, JSFUnit, Thucydides, pitest (Mutation Testing), Selenium, JMeter, SoapUI, Postman

Build, Deployment

Jenkins/Hudson, SonarCube, Rundeck, AWS, OpenShift

Project environment

Git, SVN, Eclipse, Spring Tool Suite, Gradle, Maven, Jira, Confluence, Bamboo, Bitbucket/Stash, Consul, OpenProject, Visual Paradigm, Puppet, Apache Ant, Linux, Windows

Certificates, Badges

JavaSE6Programmer Principles of Reactive Architecture

Sophora Certified Administrator (SOCAD)

Sophora Certified Delivery Developer (SOCDD)