Summary
Klaus Christiansen is a Senior Java Developer with 12 years of hands-on experience building and modernizing large, mission-critical backend systems using Java, Spring Boot, Gradle and Docker. He has driven practical improvements like migrating 130-module builds from Ant to Gradle (cutting build time from 15 to 5 minutes), introduced OWASP dependency reporting, and implemented CI/CD practices with Jenkins. Comfortable in message-driven, microservice and DDD architectures, he has delivered integrations for payments (Adyen), card terminals and complex ERP platforms, and contributed to a major EU VAT reporting program (MOMS One Stop Shop). A dedicated team player and mentor, Klaus thrives in cross-functional agile teams and enjoys lifting colleagues’ skills while tackling third-level support and legacy-to-modernization projects. He blends deep tooling knowledge—ANTLR grammars, parsers and source-migration engines—with a pragmatic focus on measurable operational gains.
12 years of coding experience
18 years of employment as a software developer
Kursus i Spring - Spring Boot - Foundation Computer Programming, Kursus i Spring - Spring Boot - Foundation Computer Programming at Teknologisk institut
AP Computer science, AP Computer science at Niels Brock
Sun Ceritfied Java Developer Java, Sun Ceritfied Java Developer Java at Sun Certified Java Developer
Sun Ceritfied Java Programmer Java, Sun Ceritfied Java Programmer Java at Sun Certified Java Programmer
HF matematik, HF matematik at Frederiksberg HF
English, Danish