Japan, Tokyo Weekly Tech Event Digest [`25 Aug 18 - Aug 24]

Hello, tech and startup enthusiasts! Hope you’re having a great week. Here’s a list of upcoming tech events in Japan for the week of August 18 - August 24. Whether you’re into coding, AI, startups, or just looking to network, there’s something for everyone. Check out the details below and mark your calendars!

Events

Monday, August 18

• Nigeria Innovation Forum | 🕐 17:00 | Muic Kansai | 🇬🇧🇯🇵 | 🔗Link: Nigerian startups and government officials will visit Osaka for a startup pitch event, exploring collaboration potential with Japanese companies and investors. The event features pitches, panel discussions with government officials and investors, and networking opportunities. It focuses on Nigeria’s growing startup market in fintech, agritech, healthtech, and clean energy.

• Sendagaya.rb #504 | 🕐 21:00 | Online | 🇯🇵 | 🔗Link: Sendagaya.rb #504 is an online event discussing RubyKaigi 2025, Kaigi on Rails 2024, and other Ruby/Rails topics. Participants can bring questions, work on projects, or discuss topics like the Ruby Hacking Guide, Rails guides, or REST architecture. The event will be held on Google Meet.

Tuesday, August 19

• Weekly Lunch @ TiB | 🕐 11:30 | Tokyo Innovation Base, Tokyo | 🇬🇧🇯🇵 | 🔗Link: Weekly startup lunch networking in Tokyo. Entrepreneurs, investors, and enthusiasts connect over lunch. Bring your own or buy from food trucks. Casual conversations and discussions.

• OTAS briefing session | 🕐 17:00 | Tokyo Innovation Base, Tokyo | 🇯🇵 | 🔗Link: Briefing session for the Ota City Open Innovation Promotion Project (OTAS). OTAS aims to foster innovation by connecting Ota City businesses with different fields and new ideas. The session will detail OTAS, including support points, and feature a panel discussion showcasing successful collaborations between Ota City companies and hardware startups. A pre-event for “Meet New Solution in TIB 2025” will also be held.

• Tokyo HackerSpace Weekly | 🕢 19:30 | HackerSpace, Tokyo | 🇬🇧 | 🔗Link: Weekly gathering for tech enthusiasts, makers, and hackers to collaborate, share ideas, and work on projects together.

Wednesday, August 20

• Statistical-Computational Trade-offs for Recursive Adaptive Partitioning Estimators | 🕐 10:00 | Online | 🇬🇧 | 🔗Link: Yan Shuo Tan (National University of Singapore) discusses statistical-computational trade-offs for recursive adaptive partitioning estimators. The talk explores the phenomenon of greedy training getting stuck at local optima. It compares SGD-trained neural networks with greedy recursive partitioning estimators. The talk is based on joint work with Jason Klusowski and Krishnakumar Balasubramanian.

• Yokohama Startup Lunch | 🕐 11:30 | Tech Hub Yokohama, Yokohama | 🇬🇧 | 🔗Link: Monthly networking event for entrepreneurs, innovators, and professionals in Yokohama. Connect, collaborate, and explore opportunities. Lunch not provided.

• Reading Rails & AI for Rails PRs | 🕐 18:30 | Le Wagon Tokyo | 🇬🇧 | 🔗Link: Tokyo Rubyist Meetup event featuring talks on Rails 1.0 source code by Masafumi Okura and AI for Ruby PRs by Paulo D’Alberti. Includes opening, networking, and sponsored food and drinks.

• Deeptech Meetup: Sustainability in Business | 🕐 18:30 | Plug And Play Japan, Tokyo Office | 🇯🇵 | 🔗Link: Deeptech Meetup focusing on business development in sustainability, featuring Jikantechno. Discussion on startup and corporate collaboration challenges. Open to all interested, regardless of background.

• Tokyo HackerSpace Weekly JP | 🕢 19:30 | HackerSpace, Tokyo | 🇯🇵 | 🔗Link: Weekly gathering for tech enthusiasts, makers, and hackers to collaborate, share ideas, and work on projects together. In Japanese.

Thursday, August 21

• Thursday Gathering | 🕐 16:00 | Cic Tokyo | 🇬🇧🇯🇵 | 🔗Link: Thursday Gathering #348 features various sessions, including “How to Enjoy Thursday Gathering,” L’Oreal Japan’s reverse pitch on sustainability, discussions on innovation from Spain’s Basque region, a talk on studying abroad in Boston, and insights into impact startups by young entrepreneurs.

Friday, August 22

• Better Expert Agents with Dana | 🕐 01:00 | Online | 🇬🇧 | 🔗Link: Introduction to Dana, a local-first agent programming language for building AI agents. Learn about building expert agents without cloud dependencies, featuring long-running workflows, built-in concurrency, and deterministic execution. Presented by Vinh Luong of Aitomatic, hosted by the AI Alliance.

• WebX Fintech EXPO Osaka Lottery | 🕐 10:00 | Tokyo, Osaka & Kyoto, Japan | 🇬🇧 | 🔗Link: Lottery for WebX Fintech EXPO in Osaka. More details at: https://lu.ma/1wxko7kn

• EmpowerHER Meeting | 🕐 12:00 | Tokyo Innovation Base | 🇬🇧🇯🇵 | 🔗Link: EmpowerHER Meeting, a public networking event for companies and organizations that support the EmpowerHER Initiative and those working on DEI in the startup ecosystem. The meeting aims to share knowledge, success stories, and challenges, explore new collaborations, and generate ideas from diverse perspectives. This time, the theme will be the results of a survey on gender diversity in the startup community conducted by the Startup Ecosystem Association Japan in 2025.

• JJUG Night Seminar: BoxLang | 🕐 19:00 | Datadog Japan, Tokyo | 🇬🇧🇯🇵 | 🔗Link: JJUG Night Seminar introducing BoxLang, a dynamic JVM language. Covers its interoperability with Java, full-stack framework features, and multi-language support. Targeted at developers interested in modern JVM development.

• LINE Yahoo x ZOZO Collaboration Meetup: Data Science | 🕐 19:15 | Line Yahoo Corporation, Kioi-cho Office, Tokyo | 🇬🇧 | 🔗Link: LINE Yahoo and ZOZO co-host a meetup on data science, focusing on A/B testing failures and solutions. The event includes presentations, a panel discussion, and a networking session. Open to anyone interested in data science.

Saturday, August 23

• Daikanyama Morning Code | 🕐 09:00 | Dean & Deluca, Tokyo | 🇬🇧🇯🇵 | 🔗Link: Free meetup for those interested in code, web development, design, cloud, blockchain, or AI. All levels welcome. Bring your laptop, discuss your work, share projects, and network with other participants. May need to purchase something from the venue. If not on the ‘Going’ list, there’s a 3000 yen fee.

• Digital Nomads Morning Activity | 🕐 09:00 | Dean & Deluca Cafe Tokyo College Of Music Nakameguro・daikanyama Campus | 🇬🇧 | 🔗Link: Morning activity event for digital nomads and expats in Nakameguro. Breakfast, networking, and making international connections. Limited to 20 people. Photos and videos will be taken. Communication primarily in English.

• Coffee and Code | 🕐 10:00 | Starbucks In Roppongi Hills Lobby, Tokyo | 🇬🇧 | 🔗Link: Relaxed coding event for coders, beginners, and IT professionals. Bring a laptop, grab coffee, discuss coding/learning, share tips. All nationalities, ages welcome. Lunch at a nearby restaurant from 12:30pm.

• Vibe Coding: 1-Day Ship Challenge | 🕐 13:00 | Fujitsu Uvance Kawasaki Tower, Kawasaki | 🇬🇧🇯🇵 | 🔗Link: A one-day hackathon focused on building app prototypes using AI-powered conversational coding with Bolt, Expo, and RevenueCat SDK. Part of the global Shipaton 2025 hackathon. Open to individuals and teams of up to 3. Includes workshops, mentorship, and networking.

• MDN Translation Meetup | 🕐 13:00 | Online | 🇯🇵🇬🇧 | 🔗Link: Monthly online meetup for translating MDN Web Docs into Japanese. Participants collaborate via Slack, with a focus on the new Github Pull Request based translation workflow. All skill levels are welcome.

• Manifestation Jam: Vision Boarding | 🕐 15:00 | Gojapan Mobile, Tokyo | 🇬🇧🇯🇵 | 🔗Link: Workshop on vision boarding for the second half of 2025. Reflect on the past, set attainable goals, create a vision board, and connect with others. For university students, young professionals, or anyone seeking to refocus and re-energize their 2025.

Sunday, August 24

• Business Creation | 🕐 15:30 | Wesley Center, Tokyo | 🇬🇧🇯🇵 | 🔗Link: This workshop explores business creation from a product-out perspective. It addresses challenges companies face in leveraging existing resources for new ventures, going beyond market-in approaches. The session covers the strengths of product-out, its strategies, and how to revive stalled products/technologies. Targeted towards those seeking to utilize internal resources, navigate unclear market needs, and drive business transformation. It also benefits those struggling to bring promising products to market.

Disclaimer

Events above are collected from a variety of online open sources. There might be changes or cancellations. Please check the event page for the most up-to-date information.

If you have an event to share, please let us know - we’d love to include it in our next digest! Mail us at [email protected].