Champion
Julien Dubois
GitHub
Julien Dubois is a Java Champion and a Principal Manager at Microsoft. With his team of world-class developer advocates, Julien works directly with the engineering groups to improve how developers can leverage AI using Microsoft and GitHub solutions.
With over 25 years of experience in the Java ecosystem, Julien is best known as the creator of JHipster, an Open Source platform with 22,000+ GitHub stars that revolutionized how developers build Spring Boot applications. His recent work focuses on bringing enterprise-grade AI capabilities to Java through his contributions to LangChain4j and Spring AI.
Julien is a recognized thought leader in the Java community, having spoken at over 200 international conferences including Devoxx, Spring One, and Microsoft Build. He authored Spring par la pratique, the first French book on the Spring Framework, which became a bestseller. His presentations typically feature live-coding sessions and practical workshops that help developers immediately apply new technologies.
With over 25 years of experience in the Java ecosystem, Julien is best known as the creator of JHipster, an Open Source platform with 22,000+ GitHub stars that revolutionized how developers build Spring Boot applications. His recent work focuses on bringing enterprise-grade AI capabilities to Java through his contributions to LangChain4j and Spring AI.
Julien is a recognized thought leader in the Java community, having spoken at over 200 international conferences including Devoxx, Spring One, and Microsoft Build. He authored Spring par la pratique, the first French book on the Spring Framework, which became a bestseller. His presentations typically feature live-coding sessions and practical workshops that help developers immediately apply new technologies.
Badges 15
Talks 19
- Devoxx Belgium 2026
BootUI, the missing developer console for Spring Boot and Quarkus
- Devoxx Belgium 2026
223 Pull Requests in 11 Days: The Recipe for Building Real Software with AI Agents
- Devoxx Belgium 2025
Panel Discussion: LangChain4j Turns Two - What We’ve Learned and What’s Next
- Devoxx Belgium 2025
Building AI agents with Structured Outputs, Function Calling, and MCP
- Devoxx France 2025
Construire une IA agentique avec les Structured Outputs, Function Calling et MCP
- Devoxx Belgium 2024
Panel Discussion: LangChain4j, a year later.
- Devoxx Belgium 2024
Build your own enterprise ChatGPT with Open Source
- Devoxx Belgium 2024
Easy RAG with LangChain4J and Docker
- Devoxx France 2024
Comprendre l'IA: construisez votre propre ChatGPT d'entreprise avec LangChain4J
- Devoxx France 2024
Meet with an OSS project: LangChain4j
- Devoxx Belgium 2022
What is JHipster Lite and why should you care?
- Devoxx UK 2022
Purple Pound - Accessibility in the UK and becoming a Master Accessible Author.
- Devoxx Belgium 2019
Spring on azure
- Voxxed Days Microservices 2019
Deploying spring boot microservices on azure
- Devoxx Belgium 2018
Jhipster 5 - what's new and noteworthy
- Devoxx France 2018
Migrer à spring boot 2 lorsque l'on a une "vraie" application
- Devoxx France 2018
Jhipster: what's new in our spring/summer 2018 collection
- Devoxx Belgium 2017
Easy microservices with jhipster
- Devoxx Belgium 2017
Jhipster bof