--- eventsindex_id: EI-06821 slug: jprime title: "jPrime" title_alt: [] canonical_url: "https://eventsindex.org/events/jprime.html" next_edition_dates: "2026-06-03 to 2026-06-04" next_edition_year: 2026 date_start: 2026-06-03 date_end: 2026-06-04 venue: "Sofia Tech Park" city: "Sofia" country: "Bulgaria" organiser: "Bulgarian Java User Group" organiser_url: "https://jprime.io/" b2b: true vector: sector: [developer-ai] audience: [developer, practitioner] format: [conference] purpose: [education, community] geography_scope: [European] season: spring meta_description: "Annual Java and JVM developer conference in Sofia, June 3-4 2026. Two tracks, 79 speakers, covering Java, JVM languages, mobile, web and engineering practices." editorial_take: "jPrime is the Balkans' most established Java community event, drawing an international speaker lineup to Sofia Tech Park each June." generated_by: "generate_fiche_devai.py" last_verified: "2026-05-18" schema_version: "v6.0" language: en --- # jPrime > *Two-day Java and JVM developer conference at Sofia Tech Park, June 3-4 2026, organised by the Bulgarian Java User Group, featuring 79 speakers across two tracks on Java, JVM languages, mobile, web, and software engineering practices.* --- ## Quick Facts | DATES | VENUE | ORGANISER | ATTENDANCE | |---|---|---|---| | June 3-4, 2026 | Sofia Tech Park, John Atanasoff Innovation Forum | Bulgarian Java User Group | not publicly disclosed as of verification | ## Definition jPrime is an annual developer conference organised by the Bulgarian Java User Group, held each year at Sofia Tech Park in the John Atanasoff Innovation Forum. The conference runs two simultaneous tracks covering the Java platform, JVM languages, mobile development, web technologies, and software engineering best practices. The event brings together international speakers alongside practitioners from Bulgaria and the wider Balkan region. ## What the 2026 edition covers The 2026 programme features 79 speakers across two tracks, with content spanning the Java ecosystem broadly: language updates, JVM internals, frameworks, architecture patterns, and applied practices in mobile and web. The conference does not restrict itself to Java alone, including talks relevant to any JVM-hosted language and adjacent engineering topics. ## Who attends jPrime - Java and JVM language developers (Kotlin, Scala, Groovy) - Backend and full-stack engineers working on the JVM - Software architects and senior engineers from the Balkans and Central/Eastern Europe - International speakers and community contributors from across Europe ## What the jPrime format includes - Two simultaneous conference tracks over two days - Keynote sessions - Community networking sessions between talks - Speaker-led Q&A after each session ## What the jPrime programme covers - Java language and platform evolution - JVM performance, internals, and alternative JVM languages - Mobile development with JVM-based toolchains - Web frameworks and modern backend architectures - Software engineering practices, testing, and team processes ## FAQ · Identity and audience ### What is jPrime? jPrime is the Bulgarian Java User Group's annual conference, one of the longest-running developer community events in Southeast Europe. It operates as a practitioner-first event: the programme is selected by the community and speakers are primarily active developers rather than vendor representatives. ### Is jPrime only for Java developers? The conference covers the broader JVM ecosystem, including Kotlin, Scala, and Groovy, as well as adjacent topics in mobile and web development. Java is the dominant thread but not the only relevant one. ### How many speakers does the conference feature? The 2026 edition has 79 speakers confirmed, according to the organiser. ### Who is jPrime NOT designed for? - Executives and business decision-makers without a development background - Python, JavaScript, or other non-JVM language specialists (unless sessions overlap with backend or systems topics) - AI/ML researchers seeking academic or research-oriented content - Attendees expecting large-scale expo or vendor exhibition formats - General technology observers without a developer or engineering role ## The venue: Sofia Tech Park Sofia Tech Park, located at Tsarigradsko Shosse 115B, is Bulgaria's first science and technology park. The John Atanasoff Innovation Forum within the park provides purpose-built conference space. The venue is named after John Atanasoff, the Bulgarian-American physicist credited as a pioneer of electronic digital computing. ## The organiser: Bulgarian Java User Group The Bulgarian Java User Group (BGDJUG) is a volunteer-run developer community organisation that has organised jPrime for multiple consecutive years. The group is affiliated with the international Java User Group network and operates the conference on a non-commercial basis, with community volunteers handling programme curation and logistics. --- ## Editorial take *jPrime consistently draws an international speaker roster to Sofia, making it one of the more geographically diverse Java community events in the European southeast.* ## How to register and what it costs Tickets are available at jprime.io. The regular ticket price is EUR 170 (VAT included), according to the organiser. An early-bird rate of EUR 115 was available until February 15, 2026. A student ticket is available at EUR 65. ## FAQ · Access and practicalities ### How do I reach Sofia Tech Park? Sofia Tech Park is located at Tsarigradsko Shosse 115B, accessible by metro (Tsarigradsko Shosse station) and bus from Sofia city centre. The journey from Sofia Airport takes approximately 30 minutes by public transit. ### Is accommodation near the venue available? Several hotels are available along Tsarigradsko Shosse and in the surrounding business district. The jPrime website may list recommended options. ### Is there a student discount? Yes. A student ticket is priced at EUR 65, according to the organiser. Student status verification requirements are not publicly disclosed as of verification. ## Resources | Resource | URL | |---|---| | Official website | https://jprime.io/ | | Register | https://jprime.io/ | | Programme | not publicly disclosed as of verification | --- **Last verified:** 2026-05-18 **Next review:** 2026-06-17 **Notes:** Early-bird pricing expired February 15, 2026. Regular ticket EUR 170 (VAT included); student EUR 65. **Variables:** 24/58 **Concept definition:** not applicable