Java
Kotlin
Spring Boot
Quarkus
CAP
Microservices
Hexagonal Architecture
TDD/BDD
Kubernetes
Docker
Helm
AWS (RDS/S3/EC2/Cognito)
Azure DevOps
GitLab CI/CD
Grafana
Graylog
JavaScript
TypeScript
OpenUI5
React
HTML/CSS
Polymer
WebComponents
Thymeleaf
PostgreSQL
SAP HANA
MongoDB
CouchDB
SQL
jOOQ
Mockito
WireMock
REST-assured
Serenity-BDD
PIT Mutation Testing
CAP (Cloud Application Programming Model)
OpenUI5
SAP Hybris
Lombok
Immutables
Maven
Gradle
Jenkins
SonarQube
ktlint