Japan, Tokyo Weekly Tech Event Digest [`25 Sep 1 - Sep 7]

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 25 - August 31. 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 1

• BIJ Live Q&A: Hot Topics in Japanese Employment Law | 🕐 12:00 | Online | 🇬🇧 | 🔗Link: Live Q&A with Christopher Rathbone, attorney at City-Yuwa Partners, on Japanese employment law. Facilitated by Jason Ball. Interactive session exploring latest issues impacting employers and employees in Japan. Bring your questions and join the discussion via the BIJ Discord server.

• Variational Uncertainty Decomposition for In-Context Learning | 🕐 14:00 | Online | 🇬🇧 | 🔗Link: This talk discusses uncertainty in large language models’ in-context learning. It introduces a framework for decomposing uncertainty into epistemic and aleatoric components. The method uses auxiliary inputs to estimate aleatoric uncertainty. Experiments demonstrate the effectiveness of the approach.

• Sendagaya.rb 505 | 🕐 21:00 | Online | 🇯🇵 | 🔗Link: Sendagaya.rb #505 is an online event discussing RubyKaigi 2025, Kaigi on Rails 2024, and other topics. It also offers a chance to consult on development issues. The event will be held on Google Meet. Participants are encouraged to join the Sendagaya.rb Slack community.

Tuesday, September 2

• 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.

• Fast Track Day | 🕐 14:00 | Antler株式会社 (antler In Japan), Tokyo | 🇬🇧 | 🔗Link: Antler’s Fast Track Day for their Residency in Japan - Batch 5. A one-day event where participants can pitch directly to the Senior Director, get a same-day decision, and secure a spot in the residency program before applications close. The residency starts on September 29th and offers progress, co-founder finding, networking, and funding opportunities.

• Plug and Play x KDDI Energy Future | 🕐 16:00 | Tokyo Innovation Base, Tokyo | 🇯🇵 | 🔗Link: Event exploring the intersection of space and energy. Keynote speech on space development, pitches by startups and corporations in space and energy, and networking opportunities. Target audience includes business development professionals, investors, and researchers.

• AMA with VCs Featuring Neeti Virmani | 🕐 18:00 | Online | 🇬🇧 | 🔗Link: Online AMA with Neeti Virmani, startup investor. Learn about startup funding, investor evaluations, and founder qualities. Q&A with Virmani, offering insights into early-stage investments and venture capital. Targeted towards founders, investors, accelerators, and corporate innovators.

• Kubernetes Meetup Tokyo | 🕐 19:00 | Preferred Networks, Tokyo | 🇬🇧 | 🔗Link: Kubernetes Meetup Tokyo #71: A meetup for Kubernetes users to exchange information and network. Topics include Amazon EKS’s support for 100,000 nodes, Out-of-Memory issue resolution with cgroup v2, and lightning talks.

• TAI x DEEPCORE - Deep Learning Theory | 🕐 19:00 | Kernel Hongo, Tokyo | 🇬🇧🇯🇵 | 🔗Link: This event explores the cutting edge of deep learning theory, featuring Shun-ichi Amari and Mitsutoshi Imasumi. The event will delve into the impact of model scaling and theoretical approaches to understanding deep learning principles, followed by networking opportunities.

• 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 3

• English Pitch | 🕐 10:00 | Online | 🇬🇧🇯🇵 | 🔗Link: Seminar on creating English pitch materials for startups expanding globally. Covers structuring, effective expressions, and visual design. Targeted at those new to English pitching or creating pitch decks. Speaker: Kei Shimada, CBO of Mirai Space Transportation System.

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

• UX Design Guide Study Group | 🕐 12:00 | Online | 🇬🇧 | 🔗Link: Online study group on UX design based on the UX Collective “Guide To Design”. The event targets professionals involved in digital products and aims to deepen practical UX thinking. Discussions, Slack community, and recorded archives are part of the learning experience.

• Start CI/CD with CircleCI | 🕐 14:00 | Online | 🇬🇧 | 🔗Link: Webinar for those considering implementing CI/CD and those interested in CircleCI. Covers basic concepts, setup, pipeline execution, and Q&A. Learn how CircleCI streamlines development workflows and improves software reliability.

• 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.

• Unconscious Bias | 🕐 19:00 | Online | 🇬🇧 | 🔗Link: Book discussion on unconscious bias, how it affects perceptions, and its impact on discrimination. Explores the neuroscience of bias, its influence on institutions, and strategies for mitigation through education and awareness.

• 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 4

• Thursday Gathering | 🕐 16:00 | CIC Tokyo | 🇬🇧🇯🇵 | 🔗Link: Thursday Gathering #350, with various sessions like ‘How to Enjoy Thursday Gathering,’ discussions on Osaka’s startup scene, and presentations on entrepreneurship and mental health. The event includes graduation celebrations and networking opportunities.

• Nagoya GitHub Copilot Meetup 8 Hack your Vibe Coding | 🕐 18:00 | Wework Jr Central Towers Nagoya | 🇬🇧 | 🔗Link: GitHub Copilot Meetup focused on “Vibe Coding.” The event covers updates, hands-on coding, and information on the GitHub Hackathon and Universe conference. Participants need a GitHub account and VS Code.

• ProductTank Tokyo - Monthly Casual Meeting | 🕐 19:00 | Perry’s Bar, Shibuya | 🇬🇧🇯🇵 | 🔗Link: Casual networking event for product managers and enthusiasts in Tokyo. Expand your network, build relationships, find opportunities, and learn from other PMs. Hosted by ProductTank Tokyo, the largest product community in Japan.

• Speak with Clarity & Care: How to Respond, Not React | 🕐 18:30 | Spaces Shinagawa, Tokyo | 🇬🇧🇯🇵 | 🔗Link: Interactive workshop on responding vs. reacting emotionally. Learn to label emotions, replace judgment with observation, express needs, and make non-pressure requests. Improve communication skills for work, home, and intercultural interactions.

Friday, September 5

• ROCKET PITCH NIGHT KANSAI | 🕐 14:30 | Ritsumeikan University - Osaka Ibaraki Campus (oic), Osaka | 🇬🇧 | 🔗Link: ROCKET PITCH NIGHT KANSAI 2025, part of OIC CONNÉCT, invites 40 presenters and 500+ participants (students, startups, entrepreneurs, nonprofits, and corporate innovators) to share their vision in a 3-minute pitch. Open to Kansai, Japan, and beyond.

• TAI AAI 12 - Evolutionary Algorithms | 🕐 18:00 | Minato City, Tokyo | 🇬🇧 | 🔗Link: Tokyo AI (TAI)‘s Advanced AI (AAI) group hosts an evening exploring evolutionary algorithms. Speakers include Sebastian Risi on self-organizing neural intelligence, Nathanael Aubert-Kato on controlling molecular robot swarms, and Q. Tyrell Davis on planetary cybernetics. Networking session included.

• 2600 Meeting | 🕐 19:00 | Beemars, Shinjuku | 🇬🇧🇯🇵 | 🔗Link: Monthly Tokyo 2600 meeting. Discuss hacking and other topics. Entire bar reserved. Active 2600 meeting in Japan.

• GitHub Copilot Meetup 9 Hack your Vibe Coding | 🕐 19:15 | Line Yahoo! Osaka Office | 🇬🇧 | 🔗Link: GitHub Copilot Meetup #9 focusing on “Vibe Coding.” Learn about AI’s impact on development, explore coding agent features, and participate in hands-on Vibe Coding activities. The event also encourages participation in the official GitHub hackathon.

Saturday, September 6

• Daikanyama Morning Code | 🕐 09:00 | Dean & Deluca, Tokyo | 🇬🇧🇯🇵 | 🔗Link: Free meetup for code, web dev, design, cloud, blockchain, and AI enthusiasts. All levels welcome. Bring your laptop, discuss projects, and share ideas. May need to purchase something from the venue. 3000 yen fee if not on the ‘Going’ list.

• Coffee and Code | 🕐 10:00 | Starbucks In Roppongi Hills Lobby, Tokyo | 🇬🇧 | 🔗Link: Relaxed event for coders, aspiring coders, and IT professionals. Bring a laptop, grab coffee, discuss coding/learning, share tips. All nationalities and ages welcome. Lunch at a nearby restaurant at 12:30pm. Note: Starbucks doesn’t offer charging on weekends.

Sunday, September 7

• JPYC & Slash for Everyone ― Next Step: Stablecoins & Payments | 🕐 10:00 | Jam Base | 🇬🇧🇯🇵 | 🔗Link: Event on stablecoins and next-generation payment tech. Morning session: hands-on seminar on JPYC React SDK for developers. Afternoon session: talks by JPYC, Slash, and XWIN, open to all levels. Covers stablecoin basics, regulations, and DeFi trends.

• Vue.js Hands-on | 🕐 10:30 | Air Water Forest, Sapporo | 🇬🇧🇯🇵 | 🔗Link: Vue.js hands-on event by Vue Fes Japan, part of Front-end Conference Hokkaido 2025 after-party. For beginners and experienced Vue.js users. Includes Nuxt tutorial, ChibiVue session, and Q&A.

• Overseas Startup Roundtable | 🕐 22:00 | Online | 🇬🇧🇯🇵 | 🔗Link: Discussion with entrepreneurs working in overseas startups. It serves as a pre-event for Startup Weekend Tokyo Kuala Lumpur, offering insights into working and daily life in overseas startups, for those interested in global ventures.

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].