GConferenceGridThe Conference Catalogue · Vol. 2025Folio № 6882F1
DevOps

JCON EUROPE 2025

J

CON EUROPE 2025 is the premier in-person Java community conference in Germany, organized by the Java User Group Oberpfalz with JAVAPRO Magazine. The event provides a unique immersive experience for Java developers, featuring live coding on giant movie screens, hands-on workshops, and sessions covering core Java technologies. The 10th edition shines a spotli…

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37Voices
23Underwriters
0Exhibitors
0On the bill · sessions
47Companies · in total
§I

The Voices

Programmed at JCON, in alphabetical order.
Alina Yurenko
Developer Advocate for GraalVM at Oracle Labs · Oracle Labs
Ana Maria Mihalceanu
Java Champion Alumni, Certified Architect
Andres Almiray
Seasoned Sourceror
Brian Demers
Developer Advocate at Gradle · Gradle
Brian Vermeer
Java Champion | Staff Developer Advocate @ Snyk · Snyk
Carola Lilienthal
Managing Director at Workplace Solutions · Workplace Solutions
Cay Horstmann
Author of Core Java, Scala for the Impatient, and many other books.
Emily Jiang
Lead development architect for MicroProfile and CDI at IBM · IBM
Florian Habermann
CTO & Co-Founder · MicroStream
Gerrit Grunwald
Senior Developer Advocate at Azul Systems · Azul Systems
Grace Jansen
Developer Advocate at IBM · IBM
Jonathan Vila
Developer Advocate at Sonar · Sonar
Karl Heinz Marbaise
Apache Maven PMC Chair
Kevin Wittek
Testcontainers Maintainer and OSS Engineering Manager at Docker · Docker
Kito Mann
Principal Consultant at Virtua, Inc. · Virtua, Inc.
Lize Raes
Software Engineer at LangChain4j · LangChain4j
Marc Philipp
JUnit team lead
Marcus Hellberg
VP of Developer Relations at Vaadin · Vaadin
Marit van Dijk
Software Developer | Java Champion | Developer Advocate at JetBrains · JetBrains
Mark Stoodley
Chief Architect for Java at IBM · IBM
Markus Kett
JAVAPRO Magazin Editor in Chief, CEO of MicroStream · JAVAPRO Magazin / MicroStream
Martin Lippert
Spring Tools Lead & Sustainability Ambassador · Broadcom

— and 15 more, by name unsung —

§II

Underwritten By

The houses behind the program. Tiers as disclosed.
adesso
Agile Unicorn
BayStartUP
Breuninger Digital
DEVK Versicherungen
GEBIT Solutions
GermanTechJobs
Glorium Technologies
HDI
Hyand Group
IBM
ITTECH Jobcast
JAVAPRO
Java User Group Oberpfalz
Karakun
MicroStream
Moderne
Oracle
Oracle Database
RapidClipse X
Sessionize
Vaadin
XDEV Software GmbH
Intermission
Part the Second · For the Buyer

What does it mean when 47 companies show up — and 4 bet on three roles at once?

47 companies. four are betting more than once.

The numbers below are derived from the speakers, sponsors, and exhibitors on this page — cross-referenced into one ledger. They are the only thing here that 10times.com cannot tell you.

01Fig. 01 — Composition of the House
4All threespeak · spons · exh
19Sponsoringsponsor only
0Exhibitingexhibitor only
24Speakingspeaker only

The Triple-Threat

IBM·MicroStream·Oracle·Vaadin

02Fig. 02 — The Voices, by Seniority

30% of the speakers carry senior titles — C-suite, Founder, VP, or Director-level.

  • C-suite411%
  • Founder / Owner13%
  • VP-level13%
  • Director / Head of514%
  • Manager / Lead822%
  • Engineer · IC1438%
  • Other roles411%

Of 37 on the bill · classified by free-text title

03Fig. 03 — The Heaviest in the Room
  1. 01IBMSp3V
  2. 02MicroStreamSp1V
  3. 03OracleSp1V
  4. 04VaadinSp1V
  5. 05adessoSp
  6. 06Agile UnicornSp
  7. 07BayStartUPSp
  8. 08Breuninger DigitalSp
  9. 09DEVK VersicherungenSp
  10. 10GEBIT SolutionsSp
  11. 11GermanTechJobsSp
  12. 12Glorium TechnologiesSp
  13. 13HDISp
  14. 14Hyand GroupSp
04Fig. 04 — By Tier
unspecified23
100% of 23
05Fig. 05 — The Missing · who's at peer events but not here

These companies sponsored two or more peer events recently, but aren't on this program. For an organizer, that's a list of warm prospects.

06Fig. 06 — Adjacent Convocations · by shared underwriters

In the same series

Prior and forthcoming editions