This edition has endedNext: jPrime 2027May 30–31, 2027 · Sofia
Java

jPrime 2026

This edition has ended

jPrime 2026 ran Jun 3–4, 2026 at Sofia Tech Park in Sofia, Bulgaria. It is a Java conference. ConferenceGrid lists 29 speakers, 20 sponsors and 32 sessions. The next edition, jPrime 2027, is May 30–31, 2027 in Sofia.

Lineup updated May 29, 2026 · dates verified May 24, 2026

Experience the vibrant atmosphere of jPrime, the community-driven Java conference in Bulgaria, where tech enthusiasts gather to explore the latest in Java and JVM languages. Organized by the Bulgarian Java User Group, this event is focused on talks, hands-on labs, and workshops, offering pure tech insights with no marketing fluff. Attendees enjoy ample netwo…

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29Speakers
20Sponsors
32Sessions
21Companies · in total

Speakers

Programmed at jPrime, in alphabetical order.

Arnaud Jean
The Witcherish
Cay Horstmann
The very same CAY HORSTMANN
Christian Heitzmann
The Not-So-Neutral Swiss Guy
Emanuel Trandafir
Baeldung Author & Rock Climber
François Martin
The Hallway Track Engineer
Gerrit Grunwald
Java Lover
Hinse ter Schuur
Trade-off Juggler
Ioannis Kolaxis
Reinventing software engineering
Ivan Yonkov
Javarchaeologist
Johannes Bechberger
OpenJDK Hacker and Tools Developer
Jonathan Vila López
A community advocate
Jordan Jovkov
Old School Java Guy, AI Geek
Kevin Dubois
Sr Principal AI Wrangler
Kristiyan Stoyanov
Multi-Agent Troublemaker
Lyubomir Bozhinov
Technology Leader
Marcin Chrost
A humble developer
Marit van Dijk
Developer Advocate at JetBrains · JetBrains
Milen Dyankov
The Vector Whisperer
Panche Chavkovski
JUGMK Helmsman
Piotr Przybył
Senior Developer Advocate
Roberto Cortez
The Coimbra Drummer
Sergi Almar
Spring Sensei

Sponsors

The companies behind the program. Tiers as disclosed.

LuxoftPlatinum
OCADOPlatinum
PaysafePlatinum
accediaGold
AxwayGold
Komfo BulgariaGold
Musala SoftGold
ProxiAdGold
Skrill BulgariaGold
TechHuddleGold
Catenate BulgariaSilver
CSC BulgariaSilver
ErudikaSilver
Matrix GlobalSilver
NemetschekSilver
OctoonSilver
OntotextSilver
ScaleFocusSilver
walkdesk.proSilver
MentorMateGold_Lite

Agenda

Selected from 32 sessions.

  • Thursday (04/06/2026) 10:00 - 10:50

    Know Your Java?

  • Thursday (04/06/2026) 10:00 - 10:50

    Know Your Java? (Overflow)

  • Thursday (04/06/2026) 10:00 - 10:50

    Wnen Greed is Good--A Deep Dive into Java Stream Performance

    Deep Dive
  • Thursday (04/06/2026) 11:05 - 11:55

    Building Agents with Spring AI

  • Thursday (04/06/2026) 11:05 - 11:55

    Visualizing the Java Concurrency API

  • Thursday (04/06/2026) 13:00 - 13:50

    Create Your Own Role-Playing Game with Agentic AI using Spring AI

  • Thursday (04/06/2026) 13:00 - 13:50

    Java and GenAI: from basics to enterprise

  • Thursday (04/06/2026) 13:00 - 13:50

    My code is faster than yours... let me prove it to you!

  • Thursday (04/06/2026) 14:05 - 14:55

    From JVM to GPUs: Building GPU-Accelerated AI Libraries in Java with TornadoVM

Quick answers

When is jPrime 2026?
jPrime 2026 ran Jun 3–4, 2026 at Sofia Tech Park in Sofia, Bulgaria. The next edition, jPrime 2027, is May 30–31, 2027 in Sofia.
Where is jPrime 2026 held?
jPrime 2026 was held at Sofia Tech Park in Sofia, Bulgaria.
Who is speaking at jPrime 2026?
ConferenceGrid lists 29 speakers, including Arnaud Jean (The Witcherish), Cay Horstmann (The very same CAY HORSTMANN) and Christian Heitzmann (The Not-So-Neutral Swiss Guy).
Who sponsors jPrime 2026?
ConferenceGrid lists 20 sponsors, including Luxoft, OCADO, Paysafe, accedia and Axway.
Company intelligence

An audience of 21 companies, parsed from the program.

21 companies in attendance.

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.

Who's in the room
0All threespeak · spons · exh
20Sponsoringsponsor only
1Speakingspeaker only
Speakers by seniority
  • Manager / Lead13%
  • Engineer · IC621%
  • Other roles2276%

Of 29 speakers · classified by free-text title

Most-represented companies
#CompanyRolesSpeakers
1accediaSponsor · Gold-
2AxwaySponsor · Gold-
3Catenate BulgariaSponsor · Silver-
4CSC BulgariaSponsor · Silver-
5ErudikaSponsor · Silver-
6Komfo BulgariaSponsor · Gold-
7LuxoftSponsor · Platinum-
8Matrix GlobalSponsor · Silver-
9MentorMateSponsor · Gold_Lite-
10Musala SoftSponsor · Gold-
11NemetschekSponsor · Silver-
12OcadoSponsor · Platinum-
13OctoonSponsor · Silver-
14OntotextSponsor · Silver-
Sponsors by tier
platinum3
15% of 20
gold7
35% of 20
silver9
45% of 20
gold_lite1
5% of 20
Related events · by shared sponsors
ConferenceDateCityShared sponsors
jPrime 2027May 30, 2027Sofia20
Digital Construction Week 2027June 23, 2027London2

In the same series

Prior and forthcoming editions