KotlinConf

2025Copenhagen, Denmark
May 21–23

The premier event for professional developers

Join us to learn, network, and explore together!

May 21 – Workshops

Join one of the seven full-day workshops

May 22–23 – Five talk tracks

More than 100 speakers from leading tech companies

May 22 – Party for all conference attendees

Catch the JetBrains keynote, expert talks, behind-the-scenes interviews, and more!

Get a reminder

May 22 Livestream

Keynote room + Interviews

09:00 - 10:00

Opening keynote

Sebastian Aigner, Michail Zarečenskij, Márton Braun, Svetlana Isakova, Ekaterina Petrova, Vsevolod Tolstopyatov, Kirill Skrygan

10:00 - 10:15

Interview Nicole Terc: Examining the Kotlin-Based Compose Animation APIs

Huyen Tue Dao

10:15 - 11:00

Kotlin and Spring: The modern server side stack

Rod Johnson

11:00 - 11:15

Interview with Aurimas & Alan: API Design and KMP

Huyen Tue Dao

11:15 - 12:00

Rich Errors in Kotlin

Michail Zarečenskij

13:00 - 13:45

From 0 to h-AI-ro: high-speed track to AI for Kotlin developers

Urs Peter

13:45 - 14:00

Interview with Dmytro Kurets: Kotlin and LLM-less AI

Huyen Tue Dao

14:00 - 14:45

Compose Multiplatform for iOS: Ready for Production Use

Sebastian Aigner

15:15 - 16:00

Building AI Agents in Kotlin

Vadim Briliantov

16:00 - 16:15

Interview with Anshika Koul: Adopting KMP at Norway's 377-Year-Old Posten Bring

Huyen Tue Dao

16:15 - 17:00

Full Stream Ahead: Breaking the protocol barrier with http4k

Ivan Sanchez

17:00 - 17:15

Interview with Enrique López-Mañas: Kotlin for Data Analysis

Huyen Tue Dao

17:15 - 18:00

That's Unpossible – A full stack side project webapp (including a high-fidelity UI!) all in Kotlin

Dan Kim

May 23 Livestream

Keynote room + Interviews

09:00 - 10:00

Qualities of a Well-Functioning System

Diana Montalion

10:00 - 10:15

Interview with Vanessa Johnson: Tooling for Accessibility

Huyen Tue Dao

10:15 - 11:00

Dissecting Kotlin: Surveying the Latest Stable and Experimental

Huyen Tue Dao

11:00 - 11:15

Interview with Dan Kim: Full-stack, Kotlin-Full Side Projects

Huyen Tue Dao

11:15 - 12:00

Designing Kotlin Beyond Type-Inference

Ross Tate

13:00 - 13:45

The Easing Symphony: AnimationSpec in detail!

Nicole Terc

13:45 - 14:00

Interview with Marat Akhin: Immutability and Project Valhalla

Huyen Tue Dao

14:00 - 14:45

Large Scale Changes with AI - Migrating millions of lines of Java to Kotlin at Uber

Ty Smith

15:15 - 16:00

Kotlin and Compose Multiplatform patterns for iOS interop

John O'Reilly

16:00 - 16:15

Interview with Ty Smith: Engineering AI Adoption at Scale

Huyen Tue Dao

16:15 - 17:00

47 Refactorings in 45 minutes

Duncan McGregor, Dmitry Kandalov

17:00 - 17:15

Interview with Tadeas Kriz

Huyen Tue Dao

17:15 - 18:00

Closing Panel

Hadi Hariri

Workshops

Build your skills with in-depth, practical workshops on key areas of Kotlin development.

  • 8 hours of hands-on practice
  • Expert hosts from JetBrains or certified Kotlin trainers
  • Personalized feedback from the hosts
  • Preparation materials
  • Certificate of attendance

Our partners

RevenueCat
Google
Gradle
Uber
Kotlin Foundation
Kotzilla
Gitar
Sentry
Bloomberg
American Express
KodeinKoders
TypeAlias Studios
Worldline
JVM Weekly
Kotlin Weekly
Android Weekly

See what last year was like

Keep up to date on @kotlinconf and @kotlinconf.com

Join us for the Kotlin event of the year!

Conference
May 22–23

Regular admission

€560.00

incl. VAT €700.00

Conference pass for days 1 and 2

  • 2 days of sessions, code labs, and unlimited networking on May 22–23
  • Food – lunch on both days and a dinner at the party on May 22
  • Refreshments – unlimited coffee, tea, and healthy snacks throughout both days
  • KotlinConf Party with a live band and open bar
  • Exclusive goodies – T-shirts and other surprises

Doesn’t include a workshop pass.

Workshops
May 21

€715.00

incl. VAT €893.75

Workshop pass

  • One workshop from 9:00 to 17:00 on May 21
  • Breakfast, lunch, and an afternoon coffee break
  • Hot drinks and refreshments throughout the day

Doesn’t include a conference pass.

Partnership

Elevate your brand’s presence, engage with industry leaders, acquire top talent, and drive your business forward by partnering with us at KotlinConf 2025.

FAQ

Students and teachers are eligible for a 50% discount on General Admission tickets. This discount cannot be applied to Super Early Bird and Early Bird tickets. To apply, please send a copy of your academic ID card or other identifying material to info@kotlinconf.com. You’ll need to be enrolled as a member of your academic institution in May 2025 to receive the discount. Please note that only official institutions qualify.
Tickets are non-refundable, except in the event that your visa is denied or the event is canceled.
You can, however, transfer your ticket to another person by changing the attendee’s name.
Please check the Venue page for information about accommodation offerings.
If you have a voucher, enter it in the Redeem a voucher field before clicking the Buy button. Make sure you redeem your voucher before proceeding as we cannot refund orders that have been inadvertently placed without first attaching a voucher.
We can provide you with a letter of invitation for your visa application. If you need one, please send your full details along with the receipt of your KotlinConf ticket purchase to info@kotlinconf.com.