Google Developer Group DevFest Tokyo 2026 (English Page)
Google Developer Group DevFest Tokyo 2026
// 日本語ページは こちら (GDG Tokyo 経由の参加登録)
GDG DevFest Tokyo 2026 is the annual technology conference organized by Google Developer Group Tokyo.
This year, with Google’s cutting-edge AI Gemini at the center, let’s learn together about the latest practices in development using generative AI across Android, Google Cloud, Web, Firebase, Flutter, Go, and more — from beginners to experts!
🔗 Official Event Website (English):
Check out the official website for full session details, timetables, and speaker bios! 👉 https://df26.gdgs.jp/en/tokyo/
🌟 Theme: "Meet the Vibes, Beyond the Vibes"
🔥 Meet the Vibes (Connect & Ignite Your Drive):
Feel the vibrant energy ("Vibes") of practitioners pushing the boundaries of AI. Connect with an inspiring community of developers and creators, witness real-world AI applications, and leave with the confidence and motivation to supercharge your daily workflow.
🚀 Beyond the Vibes (Engineering Rigor Beyond Vibe Coding): Natural-language prompting and rapid prototyping ("vibe coding") have become the baseline. But what comes next? Guided by Google Developer Experts (GDEs) and industry leaders, we dive into what truly lasts: production-grade architecture, autonomous Loop Engineering, code quality, observability, and robust software principles.
👉 Read more about the theme and story on our website: https://df26.gdgs.jp/en/tokyo/
🏛️ Program Tracks at a Glance DevFest Tokyo 2026 features
4 parallel tracks tailored to both technical specialists and business creators:
Track A: Coding with AI (AI と “書く”)
Development Workflows & Engineering Principles
Autonomous loop engineering, testing harnesses, and maintaining code quality and readability in the era of AI.
Track B: AI in Production (AI を “動かす”)
Systems & Agent Architectures: Real-time AI agent design, Tool Use MCP, enterprise data pipelines (OLAPOLTP), and production deployments.
Track C: Building with AI (AI と “つくる”)
No-Code & Automation for Non-Engineers
Architecting AI-first workflows with Google Workspace and expanding productivity through AI-driven Google Apps Script (GAS).
Hands-on Studio: Experiencing AI (AI を “体験する”)
Interactive Prototype Workshop
Zero coding experience required! Experience Google-style Design Sprints and turn ideas into working UI prototypes using Google Stitch and Gemini.
👉 Explore the full session list and timetable on the official website: https://df26.gdgs.jp/en/tokyo/#sessions
🌐 Language Accessibility
To ensure both local and international attendees have a seamless experience, we provide dedicated language support:
🤖 Gemini Live Translation
Many session will be held in Japanese. But the real-time AI translation and live captioning powered by Gemini will be provided across sessions, allowing non-Japanese speakers to comfortably follow along.
⚡ Featured English Session
There are some session organized by GDG Shibuya, GDG for the English speaking members. See below!!
🇬🇧 Full English Session
🟢 Supercharging AI Agents: External Integrations from Google Search/Maps & Agent Retrieval to Custom APIs and MCP
— by Kazunori Sato (Google Cloud / Developer Advocate) & Shotaro Ishihara (Google Cloud Japan / Developer Advocate)
[Abstract] The key to unlocking real-world value with AI agents lies in how effectively they connect to and leverage external services and data sources.
In this session, we explore the end-to-end architecture of real-time AI agents through practical examples and live demonstrations integrating Google Search, Google Maps (routing, search-along-route, street view), and enterprise data retrieval via Gemini Enterprise Agent Retrieval (formerly Vector Search 2.0) and RAG Engine.
Attendees will learn how to select the right external tools and data sources, implement reliable Tool use and MCP (Model Context Protocol) integration, ensure factuality and grounded answers with citations when integrating agents into production services. We also examine how the right approach depends on the quality and volume of your information sources: sophisticated designs such as graph-based retrieval are not always the best answer, and a simpler setup is often sufficient at smaller data scales. Drawing on a production LLM-wiki-like system, we share practical criteria for judging when an AI agent — and how much retrieval machinery — is actually needed.
More details 👉 https://df26.gdgs.jp/en/tokyo/sessions/supercharging-ai-agents/
🔵 Beyond Vibe Coding! Hands-on Development with "Gemini Notebook × AI Studio" from a Google Expert
— Haren Bhandari (Google Cloud Japan / Developer Relations Engineer)
In this session, we will design rock-solid specifications (requirement definitions) with Gemini Notebook to create a solid foundation and the source of truth. Based on this blueprint, you will create apps using Google AI Studio. We will also cover practical approaches to handling change in specifications and maintaining the specification document to make sure the spec document represents true source of truth.
🌏 GDG Shibuya Collaboration & English Sessions
This year, GDG Tokyo and GDG Shibuya are collaborating on DevFest Tokyo 2026 to make the event more accessible to both Japanese- and English-speaking communities.
The program will include English-language sessions alongside Japanese sessions, with at least two sessions currently planned in English. We’re also considering language support such as captioning and transcription to help participants enjoy sessions across languages.
Whether you’re part of Tokyo’s Japanese-speaking tech community or looking for opportunities to connect and learn in English, we’d love to welcome you to DevFest Tokyo 2026!
Event Details
📆 Date & Time: Sunday, November 29, 2026, 12:00–18:00
📍 Venue: JP Tower Hall & Conference (KITTE 4F, approximately 1 minute on foot from Tokyo Station)
🗣️ Languages: Japanese & English (language support such as translation is currently being considered)
🎫 Admission: Free (the networking reception requires a separate fee)
※ Registered attendees will receive check-in instructions the day before the event.
※ Registration details for the networking reception will be announced at a later date.
※ Posts about the event on X are very welcome! Hashtags: #gdgtokyo #gdgshibuya #devfest
How to Register
We have prepared three registration pages to suit your preferences. Please register from this page (Luma)!!
Some other options are available. Chose what you like. You are welcome to register on more than one page.
Organizers
Organized by
GDG Tokyo (@gdgtokyo)
GDG Shibuya (@gdgshibuya)
Co-organized by
GDGoC (@gdscjp)
Supported by
Google (@googledevjp)
Important Information
The schedule and event content are subject to change.
Content from this event may later be featured on the organizers’ blogs, YouTube channels, or other media. Images or screenshots that include participants’ names or profile icons may also be featured. Thank you for your understanding.
The event may be canceled at the discretion of the organizers due to severe weather or other circumstances.
If you are unable to attend, please cancel your registration through the event details page.
Repeated no-shows or absences without cancellation may result in your participation being declined at future events. Thank you for your understanding and cooperation.
This event is intended for technical exchange. Participation by those whose purpose is not knowledge sharing or interaction with other participants is not permitted.
If the organizers determine that the purpose of participation is inappropriate, they may cancel the registration.
Personal information collected through pre-event and post-event surveys or through other aspects of the event will be handled in accordance with the GDG Tokyo Privacy Policy. Please review and agree to the policy before participating.
Code of Conduct
GDG Tokyo has established a Code of Conduct so that everyone can enjoy participating in our events.
All participants are asked to review the Code of Conduct and cooperate in ensuring the event runs smoothly.
Anti-Harassment Policy
Harassment includes offensive or unwelcome behavior related to gender, gender identity and expression, sexual orientation, disability, physical appearance or characteristics, race, religion, sexual images or similar expressions in public spaces, intimidation, stalking, unwanted photography or audio/video recording, inappropriate physical contact, and related behavior.
GDG Tokyo does not tolerate harassment so that all participants can focus on sharing knowledge.
Participation without the intention of sharing knowledge or interacting with other participants is not permitted.
If the organizers determine that the purpose of participation is inappropriate, they may cancel the registration.
These expectations apply not only within GDG Tokyo event venues, both offline and online, but also when publishing or commenting about the event or its activities on blogs, social media, or other platforms.
If you experience or witness harassment, please contact the GDG Tokyo organizers through “Contact the Host” on this event page.
Location
KITTE Marunouchi
2-7-2 Marunouchi, Chiyoda City, Tokyo 100-0005, Japan
JP Tower Hall & Conference (KITTE 4F)