Japan, Tokyo Weekly Tech Event Digest [`25 Sep 8 - Sep 14]

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 September 8 - September 14. 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, September 8

• Computational Learning Theory Team Achievement Workshop | 🕐 13:30 | Online | 🇬🇧🇯🇵 | 🔗Link: RIKEN AIP’s Computational Learning Theory Team Achievement Workshop focuses on Offline/Online Optimization and Its Application to Communication Engineering. Primarily held in Japanese, with some exceptions.

• ML Tech Talk #1 | 🕐 19:15 | Line Yahoo Corporation Kioi-cho Office | 🇬🇧 | 🔗Link: ML Tech Talk #1 by LINE Yahoo. Sharing machine learning cases, from batch processing platforms and online ML to in-house models and infrastructure development. Open to anyone interested in machine learning.

• Sendagaya.rb #506 | 🕐 21:00 | Online | 🇯🇵 | 🔗Link: Sendagaya.rb #506, an online event discussing RubyKaigi 2025, Kaigi on Rails 2024 highlights, and other topics. Participants can bring questions, work on projects, or explore provided resources. The event will include discussions on various themes and offers a chance to connect with other community members.

Tuesday, September 9

• Ask an Investor Anything: Q&A with Rich Maloy | 🕐 09:00 | Online | 🇬🇧 | 🔗Link: Live Q&A with Rich Maloy, Managing Partner at SpringTime Ventures, about fundraising for startups. Learn key metrics, how to attract investors, and funding resources. The event is hosted by FI Venture Network.

• Brain Dynamics Research Workshop | 🕐 13:00 | Online | 🇬🇧 | 🔗Link: Workshop on brain dynamics research, covering current topics and future directions. Experts from systems neuroscience, neuroinformatics, and clinical neuroimaging will discuss findings and methodologies. Topics include biomarkers for psychiatric disorders, dynamic mode decomposition, brain as a physical reservoir, nonlinear representation learning, epileptogenic dynamics, and Brain-JEPA.

• 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.

• 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, September 10

• Hot & spaCy: Let’s Unpack NLP Over Brunch | 🕐 08:45 | Hotel Metropolitan Edmont Tokyo, Tokyo | 🇬🇧 | 🔗Link: TechBrunch explores Natural Language Processing (NLP). Learn about techniques, tools, and challenges. Discuss LLMs, prompt engineering, model internals, ML frameworks, and more. Casual brunch setting at Beltempo hotel restaurant. First-time attendees RSVPing on meetup.com get free meals.

• YOKOHAMA CONNECT #21 | 🕐 16:00 | Tech Hub Yokohama | 🇬🇧🇯🇵 | 🔗Link: YOKOHAMA CONNECT #21, held at Tech Hub Yokohama, offers various sessions, including discussions on the Deeptech Ecosystem and Liberal Arts for Entrepreneurship. The event welcomes innovators, entrepreneurs, and community members.

• Shibuya Public Event | 🕕 16:00 | Shibuya Startup Support Space | 🇬🇧🇯🇵 | 🔗Link: Networking event hosted by Shibuya Startup Support, providing tools and connections for startups to grow.

• Growth Hub: Inside Venture Capital | 🕐 16:30 | Shibuya Startup Support, Tokyo | 🇬🇧 | 🔗Link: Monthly gathering exploring venture culture and fundraising in Japan. Featuring SBI Investment, discussing Web3 and deep tech investments. Interactive discussion with Q&A, in English.

• Tokyo dbt Meetup | 🕐 18:00 | Classmethod Office, Tokyo | 🇬🇧🇯🇵 | 🔗Link: A networking event for all data professionals. Talks focus on community members’ dbt experiences, including analytics engineering, data stacks, data management, modeling, testing, and team structures. This event features a panel discussion with dbt Labs CEO and Anthropic Japan President, user presentations on dbt and Claude Code, and networking time.

• 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, September 11

• Thursday Gathering | 🕐 16:00 | Cic Tokyo | 🇬🇧🇯🇵 | 🔗Link: Thursday Gathering #351 features various sessions, including How to Enjoy Thursday Gathering, cross-talk among community managers, the future experience economy, and a Tech for Impact pitch night. The event expects a diverse mix of innovators and entrepreneurs.

• Robotics x Tokyo Meetup + Session | 🕐 18:30 | Venture Cafe Tokyo | 🇬🇧 | 🔗Link: Robotics x Tokyo session with Russell Nickerson from MassRobotics (Boston). Discussion on global expansion strategies for robotics startups. Informal networking, presentation, and robot demos.

• GitHub Copilot Meetup #10 | 🕐 18:50 | Ly Corporation Hakata Office, Fukuoka | 🇬🇧🇯🇵 | 🔗Link: GitHub Copilot Meetup #10, co-hosted with VS Code Dev Days, focuses on Agentic Coding and the future of AI-driven development. It includes presentations, a panel discussion, and a workshop on Vibe coding. The event also highlights the ongoing GitHub hackathon and the upcoming GitHub Universe conference.

• CircleCI x KOMOJU/JTC Tokyo Software QA Meetup | 🕐 19:00 | Prefus Kichijoji Front 10f, Tokyo | 🇬🇧🇯🇵 | 🔗Link: Meetup for QA professionals to connect, share knowledge, and learn from each other. Discussions on latest trends, best practices, and innovative approaches to software quality assurance. Speakers include Matayoshi Naoya (CircleCI), Masakazu Yokota (ZENKIGEN), and Motoharu Kudo (VALTES).

Friday, September 12

• Builder Nights Tokyo - Presented by MetaMask, Akindo and friends | 🕔 17:00 | Shibuya, Tokyo | 🇬🇧 | 🔗Link: Web3 community event featuring panels, discussions, and networking with builders, investors, and top industry leaders.

• Korean Startup Showcase - KSC Summer 2025 | 🕐 17:30 | Muic Kansai (plug And Play Japan Osaka Office) | 🇬🇧🇯🇵 | 🔗Link: Korean Startup Showcase featuring 10 promising startups from the KSC (K-Startup Center) Program. The event targets corporations, government agencies, VCs, CVCs, investors, and anyone interested in startups and open innovation. The event includes startup pitches and networking opportunities and will be held in English with translation services.

• Digital Nomads Welcome Party | 🕐 18:00 | Shibuya Startup Support, Tokyo | 🇬🇧 | 🔗Link: A casual networking night for global digital nomad entrepreneurs and Japan’s leading nomad communities in Shibuya. Includes startup pitches, destination pitches, and a networking session. Snacks and drinks provided. Event on rooftop, or 1F if rain.

• Python Meetup Fukuoka #4 | 🕐 19:00 | Line Yahoo Communications Cafe Space, Fukuoka | 🇬🇧🇯🇵 | 🔗Link: Python meetup for all levels. Learn and share Python, data analysis, and machine learning. Sessions on various Python topics. Networking opportunities available.

Saturday, September 13

• Marunouchi Morning Code | 🕐 10:00 | Dean & Deluca カフェ 丸の内 | 🇬🇧🇯🇵 | 🔗Link: Free meetup for tech enthusiasts of all levels. Discuss projects, learn from others, and share ideas. Bring your laptop. Must register to avoid a fee.

• Tengu Underground 7.0 | 🕐 11:00 | Kr Ginza Ii, Tokyo | 🇬🇧🇯🇵 | 🔗Link: Hands-on cybersecurity workshop focusing on web app, network security, and ethical hacking. Interactive learning, knowledge sharing, and hacking various things. Networking opportunities available. Geared towards those who attended previous events like “2600 Meeting” or “TenguCon”.

• OSS Gate Tokyo Workshop | 🕐 13:00 | Offline | 🇯🇵 | 🔗Link: Workshop on contributing to open-source software (OSS). Beginner participants work with supporters to choose an OSS project, run it according to documentation, and provide feedback through GitHub issues or pull requests. Requires prior GitHub account and development environment setup. The goal is to make a first contribution and encourage continued participation.

Sunday, September 14

• VS Code Dev Days Tokyo | 🕐 13:00 | Microsoft Shinagawa Office, Tokyo | 🇬🇧🇯🇵 | 🔗Link: VS Code Dev Days Tokyo is a community event focused on the future of AI-assisted coding. Sessions, workshops, and networking opportunities. From Copilot beginners to AI agent developers, all skill levels welcome. Co-hosted by VS Code Meetup and GitHub dockyard.

• Setouchi Startup Circle | 🕐 15:30 | Takamatsu, Kagawa | 🇬🇧🇯🇵 | 🔗Link: Side event held in conjunction with BLAST SETOUCHI. Discusses the future of startup ecosystems from a global perspective, focusing on regional potential, innovation creation, collaboration between government, private sector, and entrepreneurs. Aims to be a platform for sharing real challenges and hopes for those supporting startups and building ecosystems in the regions.

• Tokyu.rb#202509 | 🕐 17:00 | Tokyo | 🇯🇵 | 🔗Link: Tokyu.rb September meetup. A gathering for Ruby enthusiasts and others to enjoy food and drinks. Beginners welcome. This time at Yakiniku Naruo.b, 12 min walk from Musashikoyama/Ebara-Nakanobu Station. 4,900 yen course + drinks split, paid at the venue.

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].