Event overview

DroidKaigi 2026 Event Day will provide hands-on learning content (Workshop) that only DroidKaigi 2026 In-Person participants can apply for.
Please purchase DroidKaigi 2026 tickets before applying.

Note:
- The number of participants for the Workshop is limited, so please apply early.
- Those eligible for the scholarship program cannot apply, as a separate program is prepared for them.
- There are no plans to publish the contents of this workshop after the event ends.
- Lunch will be provided.

For detailed information on DroidKaigi 2026, please visit our official page and the DroidKaigi 2026 ticket sales page.

Schedule

Tue, 1 September 2026

Time	Contents
10:00-12:00	Workshop
12:00-12:45	Lunch time
12:45-13:00	Welcome Talk
13:00-15:00	Workshop
15:00-18:00	Poster session*

• Participation in the poster session is optional. A poster session is an interactive presentation format where presenters display large posters summarizing their work on boards in the venue, and they will be available in front of their posters to explain and answer questions directly from the attendees. More details, including how to apply as a presenter, will be announced soon.

Ticket summary

For this event, those who have tickets for DroidKaigi 2026 can apply to participate on a first-come, first-served basis.
The number of participants is limited.

• Price: Free
• First come first served

About the Workshop

This is a hands-on workshop. We have invited Sebastian Aigner from JetBrains as our instructor to provide an experience unique to DroidKaigi.
All content will be provided in English, and simultaneous interpretation will not be provided.

DroidKaigi staff members will be available as tutors to provide support, so please feel free to apply even if you are anxious about participating in a hands-on session in English.
You will need to bring your laptop to participate. Detailed setup instructions for the development environment will be provided at a later date.

Workshop Details

Title: Building Cross-Platform Apps with Kotlin, Compose Multiplatform, and Agentic Backends

Expected participant level: We assume you have experience building apps with Jetpack Compose. An understanding of Compose Multiplatform is not required, but it will be beneficial.

This Workshop is a special 4-hour program featuring Sebastian Aigner from JetBrains, where you will learn about Compose Multiplatform (CMP) and next-generation AI agent systems.

The core of the workshop is a hands-on session focusing on Compose Multiplatform. Through this hands-on experience with cross-platform development, you will also deepen your everyday mobile app development knowledge. It firmly incorporates the latest trends, making it optimized for you to grasp the "current state" of multiplatform development while efficiently acquiring CMP skills.
Additionally, the section on "Agentic Backends" mentioned in the title will introduce Koog, a next-generation agent system currently being developed by JetBrains. This is a rare opportunity to directly learn the mechanisms and architectural concepts of AI agents, for which demand is rapidly expanding.

Normally, you would have to travel to large overseas conferences like KotlinConf 2026 in Munich to gain direct exposure to such cutting-edge knowledge on CMP and AI agents. However, this Workshop provides a fulfilling curriculum where you can learn both practical cross-platform UI building skills and future backend technology concepts all at once, right here in Tokyo.

This is an unmissable opportunity for developers in Japan, so please make sure to join us for the DroidKaigi 2026 Workshop.

Instructor

Sebastian Aigner
Developer Advocate at JetBrains

Venue overview

Venue name: Bellesalle Shibuya Garden
Address: 1F, Sumitomo Fudosan Shibuya Garden Tower, 16-17 Nanpeidaicho, Shibuya-ku, Tokyo
https://goo.gl/maps/AvGs2DFv4CXiCb2FA

Facilities

We will provide Wi-Fi networks available for participants.

How to check-in

At the reception, please present the two QR codes: the ticket for this page and the ticket for DroidKaigi 2026 from your Doorkeeper ticket email.

Note:
If you do not have a DroidKaigi 2026 ticket, you will not be able to enter.
To avoid crowding at the reception, please be sure to have your QR codes open and ready while lining up.

Notes on registration

• Please purchase a ticket for DroidKaigi 2026 before applying.
• Speakers (including co-speakers) do not need to purchase a ticket for DroidKaigi 2026. If you would like to participate in the Workshop, please apply from this page without purchasing a ticket for DroidKaigi 2026.
• Those eligible for the scholarship program cannot apply, as a separate program is prepared for them.
• If you need to cancel your participation, please withdraw your application from this page.

Other notes

• There will be photography and press coverage during the event. The photos taken may be posted on the Internet for the purpose of promoting the event. Thank you for your understanding.
• DroidKaigi staff members may take photos on the day and use them for public relations activities.
• We cannot respond to inquiries via Doorkeeper. If you have any questions, please contact us at info@droidkaigi.jp.
• We are working to ensure the safety and security of everyone coming to DroidKaigi 2026, by cooperating with the local governments, especially the Tokyo municipality where the venue is located, public health centers and other administrative bodies under its jurisdiction, as well as the venue providers. We plan to provide lunch boxes and hold a meetup, but there might be changes by the time of the event in September 2026 depending on the situation regarding COVID.