Free Keycloak webinar with Niko Köbler on September 12, 2025: More information

Our trainings about Java

Whether Spring, Hibernate or Keycloak: many of our practical training courses are based on the Java ecosystem and are aimed at technically experienced participants. The focus is not on the Java language itself, but on its application in modern frameworks, architectures and tools. From Hibernate performance tuning to developing Keycloak extensions to AI products with Spring AI – here you can deepen your technological skills based on proven Java stacks. Our training courses impart in-depth, directly applicable knowledge for use in everyday project work.

Our Training Offers

Events

Your Trainers

Gerd Aschemann

DevOps, Site Reliability, Development Experience, Maven

  • Apache Maven Masterclass

Gerd Aschemann accompanies his clients on their journey to Continuous Everything. He is a freelance consultant with more than 30 years of experience in software architecture, development, and operations, or combinations of these three pillars, particularly DevOps, site reliability, and development experience.

Matthias Eschhold

Matthias Eschhold

Architecture, Domain-driven Design

  • Evolutionary architectural patterns with Clean and Hexagonal Architecture

Matthias is the lead architect for e-mobility at EnBW AG. With his experience in software architecture and domain-driven design, he and his team are shaping the IT landscape and team topology of e-mobility. Despite his focus on strategic and socio-technical architecture, Matthias still feels at home with Java and Spring Boot at the code level, implementing prototypes and performing refactorings. Matthias has been sharing his passion for architecture as a trainer for many years. His strength lies in hands-on trainings that not only teach architectural patterns and principles, but also take into account the realities of projects. He is always looking for ways to make software architecture suitable for everyday use.

Niko Köbler

Niko Köbler IT-Beratung

Keycloak, IAM

  • Keycloak Customization
  • Keycloak IAM & SSO Masterclass
  • Keycloak Quickstart

Niko Köbler is a freelancer and has been working as a Keycloak and IAM expert for customers from various industries across Europe for over eight years. He has been running a successful Keycloak channel on YouTube since the beginning of 2021 and supports the community in various forums. He is also a well-known and sought-after speaker at IT conferences, co-lead of a Java user group and writes articles for various specialist journals. https://www.n-k.de

Sandra Parsick

Java Enterprise, cloud technologies, Maven

  • Apache Maven Masterclass

Sandra Parsick is a Java Champion and freelance software developer specializing in Java Enterprise and cloud technologies. She has been involved in agile software development for several years, focusing on software craftsmanship, open source, and automation. In particular, she is a committer for Apache Maven and an active member of various program committees and community groups.

Thorben Janssen

Thorben Janssen

JPA & Hibernate

  • Advanced Hibernate
  • Hibernate Performance Tuning (Online)
  • Spring AI
  • Spring Data JPA Masterclass

As a freelance consultant and trainer, Thorben Janssen solves persistence problems with Hibernate and Spring Data JPA. Recently, he also supports teams in developing intelligent applications with Spring AI. He is the author of the Amazon bestseller “Hibernate Tips - More than 70 solutions to common Hibernate problems” and an international speaker with 20 years of experience with JPA and Hibernate. On thorben-janssen.com he writes weekly about persistence topics and helps developers to improve their skills in the Persistence Hub (persistence-hub.com).