Java, Spring : 2013-present
SQL: PostgreSQL, MySQL, Oracle : 2013-present
Ant, Maven, Gradle: 2014-present
NoSQL & Caching: OrientDB, MongoDB, ElasticSearch, Redis: 2015-present
Messaging: Kafka, RabbitMQ: 2015-present
DevOps: Jenkins, Gitlab, Docker: 2016-present
Mockito, Junit, ArchUnit : 2017-present
Angular, Node.js, React.js : 2018-present
DevOps: Kubernetes, GCP, AWS : 2018-present;
Agile SCRUM, KANBAN methodologies for team and project organization: 2013-present
Software Craftsmanship mindset for technical growth and mentoring: 2018-present
Some quick answers on administrative topics