What JPrime does

JPrime is an annual two-day Java and JVM technology conference held in Sofia, Bulgaria, organized by the Bulgarian Java User Group (BGJUG) under the legal entity jPrime Events Ltd. The event features 28+ technical sessions across two tracks, hands-on workshops, and networking, with content curated through a community Call-for-Papers process that explicitly excludes sponsor and HR talks. Core organizers Ivan St. Ivanov, Dmitry Aleksandrov, Mihail Stoynov, Nayden Gochev, and Doychin Bondzhev run the event alongside a wider European JUG partner network (Warsaw JUG, Istanbul JUG, HuJAK, java.beer, JetBrains).

The underlying technology is minimal and event-operations focused: the public-facing jprime.io website, a Progressive Web App distributed via web and Google Play Store for real-time agenda tracking, and the CFP/voting workflow that drives content selection. There is no SaaS product, no API, and no proprietary platform beyond the event itself. Backing comes from six large Bulgarian tech employers (IBM, DXC, SAP, Experian, Paysafe, Ocado) plus 28 corporate sponsors across Platinum, Gold, Gold Lite, and Silver tiers.

The business model is event-driven and community-funded. Revenue comes from three ticket tiers — Early Bird (EUR 115), Regular (EUR 170), and Student (EUR 65) — plus the multi-tier sponsorship packages ranging from EUR 1,000 (Silver) to EUR 4,250 (Platinum), supplemented by one free pass per partner Java User Group. The entity is described as not-for-profit, with ticket revenue sized to cover expenses rather than generate profit. Distribution is direct (jprime.io) and through the JUG network; the audience is Java/JVM developers primarily across Bulgaria and the wider Balkans, with growing reach into the broader European Java community.

Name

JPrime

Legal name

jPrime Events Ltd.

Website

https://jprime.io

Company type

Private

Founded year

2015

Operating status

Operating

Headcount range

1–10 employees

Short description

JPrime is an annual community-driven Java and JVM developer conference held in Sofia, Bulgaria, organized by the Bulgarian Java User Group since 2015, serving Java developers across Bulgaria, the Balkans, and wider Europe through technical talks, workshops, and networking.

Ownership category

akta.pro rank

Product category

Technology Conference / Developer Events

NAICS

Convention and Trade Show Organizers (561920)

SIC

Services-Membership Organizations (8600)

akta.pro primary industry

Engineering & Technology Congresses (THAHAJAE)

Keywords

• Java developer conference
• JVM technology events
• Software developer community
• Tech conference services
• Developer networking events

Headquarters

HQ city

Sofia

HQ country

Bulgaria

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

Operations, Personnel, Marketing or Sales, Technology or R&D

Revenue model

1. Ticket Sales: Revenue generated from selling conference tickets at multiple price tiers: Early Bird (EUR 115), Regular (EUR 170), and Student (EUR 65). The conference is described as not-for-profit, with ticket revenue covering expenses.
2. Sponsorship Packages: Revenue from corporate sponsors at multiple tiers: Platinum (EUR 4,250, includes 9 free passes, booth, stage presence), Gold (EUR 3,250, 6 free passes), Gold Lite (EUR 2,650, booth), Gold Open (EUR 2,250), and Silver (EUR 1,000, 3 free passes).

Pricing tiers

Go-to-market motion1 record

Distribution channels4 records

Marketing channels7 records

Core offering

jPrime organizes an annual two-day Java and JVM technology conference at Sofia Tech Park in Bulgaria, featuring international and regional speakers, technical sessions, hands-on workshops, and networking events for software developers. The conference also sells corporate sponsorship packages at Platinum, Gold, Gold Lite, Gold Open, and Silver tiers and provides a Progressive Web App for attendee agenda tracking.

Product overview

JPrime is a two-day Java and JVM technology conference organized by the Bulgarian Java User Group. The core offering is the annual jPrime Conference featuring technical sessions, hands-on workshops, and networking events. The company also provides a companion PWA app for attendees to track the agenda. The conference covers topics including Java, JVM languages, mobile development, web technologies, and software best practices, with sessions selected through a CFP process with no sponsor or marketing talks.

Differentiator

Problem solved

Functional benefit

Products and services

• jPrime Annual Conference A two-day annual Java and JVM technology conference held in Sofia, Bulgaria (Sofia Tech Park), featuring international and Balkan-region speakers across two tracks, hands-on workshops, and networking events for software developers.
• Conference Sponsorship Packages Corporate sponsorship packages (Platinum EUR 4,250, Gold EUR 3,250, Gold Lite EUR 2,650, Gold Open EUR 2,250, Silver EUR 1,000) that grant booth presence, logo placement on presentation screens, stage presence, free passes, and access to the developer audience.
• jPrime PWA App

Quantifiable outcome

• Conference has grown from 12 speakers/8 countries/400 attendees (2015) to 33 speakers/28+ sessions/1,200 attendees (2026)
• +1 more outcomes

Named customers13 records

Segments1 record

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature1 record

Partnerships

18 partnerships are on record, tiered platinum, gold, gold lite, community/media, core / backing and core.

• RingCentralplatinumGTM or Marketing Partner · 1 January 2026Platinum sponsor of jPrime 2026. Package includes 9 free passes, booth in conference hall, logo on presentation screens, stage presence during raffle, and 1 invite for thank-you dinner.
• RedisgoldGTM or Marketing Partner · 1 January 2026Gold sponsor of jPrime 2026. Redis provides database technology sponsorship and community visibility.
• EPAM SystemsgoldGTM or Marketing Partner · 1 January 2026Gold sponsor of jPrime 2026.
• TidegoldGTM or Marketing Partner · 1 January 2026Gold sponsor of jPrime 2026. Tide is a UK-based FinTech company.
• Accenturegold liteGTM or Marketing Partner · 1 January 2026Gold Lite sponsor of jPrime 2026.
• Bosch Digital Bulgariagold liteGTM or Marketing Partner · 1 January 2026Gold Lite sponsor of jPrime 2026.
• JetBrainscommunity/mediaGTM or Marketing Partner · 1 January 2026Community and Media Partner of jPrime 2026. JetBrains provides developer tools and is a prominent supporter of the Java ecosystem and developer community.
• java.beercommunity/mediaGTM or Marketing Partner · 1 January 2026Community partner of jPrime 2026. Java-focused developer community channel run by Nayden Gochev, one of the jPrime organizers.
• HUJAK (Croatian Java User Group)community/mediaGTM or Marketing Partner · 1 January 2026Community partner. HUJAK organizes Javantura and JavaCro conferences in Croatia. Historical partner since at least 2017.
• Istanbul JUGcommunity/mediaGTM or Marketing Partner · 1 January 2026Community partner of jPrime 2026. Istanbul Java User Group representing the Turkish Java developer community.
• Warsaw JUGcommunity/mediaGTM or Marketing Partner · 1 January 2026Community partner of jPrime 2026. Warsaw Java User Group representing the Polish Java developer community.
• IBMcore / backingGTM or Marketing Partner · 1 January 2026Listed as one of the primary companies backing the conference. IBM has a long-standing presence in the Bulgarian tech ecosystem and supports the Java community.
• DXC Technologycore / backingGTM or Marketing Partner · 1 January 2026Listed as one of the primary companies backing the conference.
• SAP Bulgariacore / backingGTM or Marketing Partner · 1 January 2026Listed as one of the primary companies backing the conference.
• Experian Bulgariacore / backingGTM or Marketing Partner · 1 January 2026Listed as one of the primary companies backing the conference.
• Paysafecore / backingGTM or Marketing Partner · 1 January 2026Listed as one of the primary companies backing the conference.
• Ocado Group (Bulgaria Development Centre)core / backingGTM or Marketing Partner · 1 January 2026Listed as one of the primary companies backing the conference. Ocado has a technology development centre in Bulgaria.
• Bulgarian Java User Group (BGJUG)coreStrategic or Co-development PartnerBGJUG (jug.bg, java-bg.org) is the primary organizing entity behind jPrime. The five core organizers are all BGJUG members. BGJUG drives Adopt-a-JSR programme, hackathons, and other Java community activities in Bulgaria.

Scale indicators6 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• KotlinConf: KotlinConf is JetBrains' annual Kotlin/JVM conference. It targets an adjacent slice of the JVM developer community and competes with jPrime for the same speaker pool, sponsor attention, and European JVM developer mindshare.
• Javantura: Javantura is a Croatian Java conference organized by HuJAK (a jPrime community partner). It is a direct peer in terms of regional positioning, community-driven model, scale, and target audience within the Balkans.
• Devoxx: Devoxx is the largest independent Java/JVM community conference in Europe (Belgium, France, UK, Poland). It shares jPrime's CFP-driven, vendor-neutral content philosophy and is the most direct comparator in terms of audience, speaker quality, and community positioning.
• Spring I/O: Spring I/O is the leading Spring/Java conference in Europe (Barcelona), community-driven and focused on JVM technologies. It targets a similar developer persona and corporate sponsors (enterprise Java stack) as jPrime, with comparable scale.
• Voxxed Days: Voxxed Days is a series of local Java/community developer conferences across multiple European cities, organized by the same network that runs Devoxx. It directly competes for European Java developer mindshare and sponsorship budgets in regional cities similar to jPrime's niche.
• JCON EMEA: JCON EMEA is a community-organized Java conference in Europe with a focus on enterprise Java and JVM topics. It is a direct substitute for attendees and sponsors evaluating regional Java events, with a similar community-first model to jPrime.

Others

• Baeldung: Baeldung is a leading Java/JVM technical content publisher with a large developer audience. It is an adjacent player (one of jPrime's 2026 speakers is a Baeldung author) and represents a parallel, content-driven channel for Java developer attention and monetization.

Regional players

• Java Day Istanbul: Java Day Istanbul is a community Java event organized by the Istanbul JUG (a jPrime community partner). It targets a similar developer persona in a different geography and competes for the same multinational Java sponsors targeting EMEA.
• Heapcon: Heapcon is a Bulgarian developer conference covering a broader technology stack (not just Java). It is a local competitor for sponsor dollars, attendees, and speakers in the Bulgarian market.

Broad incumbents

• WeAreDevelopers Live: WeAreDevelopers is a broader European developer conference and community platform (jPrime partner). It is a broader incumbent spanning multiple languages and tracks and competes for the same enterprise developer audience and sponsors.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xtwitter.com/jprimeconf
• Facebookfacebook.com/jprimeConf
• LinkedInlinkedin.com/company/jprime

Revenue estimate

Valuation estimate

Number of profiles

Profiles5 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about JPrime