Japan, Tokyo Weekly Tech Event Digest [`25 Jun 2 - Jun 8]

Hello, tech enthusiasts! Hope you’re having a great week. Here’s a list of upcoming tech events in Japan for the week of June 2 - June 8.

Events

Monday, June 2

• BIJ Networking | 🕐 12:00 | Online | 🇬🇧 | 🔗Link: Informal audio-only hangout session on Discord for Japan enthusiasts. Discuss working, running a business, or general inquiries about the Japanese market. Bi-weekly event on Mondays. Casual conversation and networking opportunity.

• GitHub Copilot Meetup #6: Agent + MCP Hands-on | 🕐 19:00 | Umeda Osaka Ekimae Dai-ichi Building | 🇬🇧🇯🇵 | 🔗Link: GitHub Copilot Meetup focusing on recent updates and a hands-on session incorporating MCP. The event targets developers interested in AI tools and features presentations by Cloud Solution Architects from Microsoft.

• Japan FinTech Observer: FinTech M&A | 🕐 20:00 | Online | 🇬🇧 | 🔗Link: Discussion on recent FinTech acquisitions, including MUFG Bank’s acquisition of Moneytree and NTT Docomo’s acquisition of SBI Sumishin Net Bank. Hosted on Google Meets.

Tuesday, June 3

• Tokyo Startup Lunch Club | 🕦 11:30 | Tokyo International Forum | 🇬🇧🇯🇵 | 🔗Link: Casual lunch meetup for startup founders, investors, and enthusiasts to connect and network in an informal setting.

• Approximate Bayesian Inference Team Seminar | 🕐 15:00 | Online | 🇬🇧 | 🔗Link: Seminar on integrating vision and language in human-robot interaction, featuring Niyati Rawal. Covers Vision and Language Navigation and empathetic dialogue generation using Transformer models.

• Sakana AI Engineer Study Session: Changes in AI Agents | 🕐 17:00 | Cic Tokyo | 🇬🇧 | 🔗Link: Sakana AI’s engineer study session on changes in AI agents. Topics include methods for agentifying existing tasks, notable AI agent research, and what companies should focus on in the age of AI agents. Speaker: Masato Ota, Applied Research Engineer at Sakana AI.

• Exploring the Core of XR | 🕐 19:00 | Lull Tech Beach Coworking Space – Seminar Room, Shibuya | 🇬🇧🇯🇵 | 🔗Link: Technical deep dive into XR with Amanda Watson, including a talk on XR runtime systems and a demo of Quest 3 passthrough API with ChatGPT integration. Geared towards developers, engineers, and XR enthusiasts.

• 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, June 4

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

• 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, June 5

• Seminar: Uncertainty Quantification for LLM-Based Survey Simulations | 🕐 09:30 | Online | 🇬🇧 | 🔗Link: Kaizheng Wang (Columbia University) discusses using LLMs to simulate survey responses and quantifying uncertainty for reliable insights. The approach converts LLM responses into confidence sets for population parameters, addressing distribution shift. The method adaptively selects the simulation sample size for valid coverage guarantees and quantifies LLM-human misalignment.

• Thursday Gathering | 🕐 16:00 | Cic Tokyo | 🇬🇧🇯🇵 | 🔗Link: Thursday Gathering #339 features various sessions, including networking for business growth in Japan, a presentation on semiconductors, and discussions on public-private co-creation and startup careers. The event welcomes innovators, entrepreneurs, and community members.

• CCCJ x Robotics x Semiconductors | 🕐 17:00 | Cic Tokyo | 🇬🇧 | 🔗Link: Collaboration with CCCJ Emerging Technologies Committee. Presentation by Kirk Ouellette, VP of Semiconductors at STMicroelectronics. Register via Venture Cafe.

• ClickHouse Tokyo Meetup - AI Night | 🕐 18:30 | Toranomon Alcea Tower Conference Center, Tokyo | 🇬🇧🇯🇵 | 🔗Link: Tokyo data enthusiasts meetup focusing on real-time data analytics in AI. Featuring expert talks, networking, and discussions on ClickHouse, Langfuse, and Amazon Bedrock.

• ProductTank Tokyo - Monthly Casual Meeting | 🕐 19:00 | Hobgoblin Shibuya British Pub, Tokyo | 🇬🇧🇯🇵 | 🔗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.

• Women’s Boost Night | 🕐 19:00 | Tokyo Innovation Base, Tokyo | 🇬🇧 | 🔗Link: A women-only networking event for those working in, or interested in, startups. The event features talks, group discussions, and networking opportunities. It’s a pre-event for IVS 2025 and aims to boost attendees’ engagement and connections within the startup community.

• AI & Programming Experience | 🕐 19:00 | Online | 🇯🇵 | 🔗Link: An online event for beginners interested in AI and programming. Participants will create a web app to predict their future using AI. The event includes an introduction to AI, app development, code review, and a discussion on the role of engineers in the AI era.

• TAI AAI #10 - AI x Speech | 🕐 18:00 | Shibuya, Tokyo | 🇬🇧 | 🔗Link: The Tokyo AI (TAI)‘s Advanced AI (AAI) group hosts an evening exploring AI and speech technology. Experts will discuss ASR, speech disentanglement, and speech-to-speech translation, covering real-world applications and cutting-edge research. Speakers include Qi Chen, Nathania Nah, and Meishu Song.

Friday, June 6

• GitHub Copilot Meetup #7 | 🕐 18:30 | Ly Corporation Hakata Office, Fukuoka | 🇬🇧🇯🇵 | 🔗Link: GitHub Copilot Meetup #7, focused on catchup and hands-on with Agent + MCP. The event includes updates, hands-on sessions, and networking opportunities. Participants need a GitHub account, VS Code, Node.js, and uv or docker.

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

• Exploring Robust Software with the Author of ‘Guide to Good Code’ | 🕐 19:00 | Line Yahoo, Tokyo Garden Terrace | 🇬🇧🇯🇵 | 🔗Link: A talk event commemorating the publication of the new book “Guide to Good Code: Principles and Practices for Creating Software Resistant to Change.” Featuring author Atsushi Mori and special guests discussing the book’s highlights and secrets of good code. The event includes panel discussions, Q&A, and a networking and book signing session.

Saturday, June 7

• Global AI Conference & Hackathon | 🕐 09:00 | J. F. Oberlin University Shinjuku Campus, Tokyo | 🇬🇧🇯🇵 | 🔗Link: Open AI hackathon co-hosted by top universities and AI/Web3 pioneers. Build the next big thing in AI. Challenge tracks to be announced.

• JJUG CCC 2025 Spring Volunteer Staff Recruitment | 🕐 09:00 | Bellesalle Shinjuku Grand Conference Center, Tokyo | 🇬🇧🇯🇵 | 🔗Link: Volunteer staff recruitment for JJUG CCC 2025 Fall. Tasks include timekeeping, equipment management, session operation, reception, and participant guidance. Applicants must be available on June 7th and contactable via Slack. Application deadline is mid-May. Pre-meeting in mid-to-late May. Volunteers can attend sessions when not working.

• JJUG CCC 2025 Spring | 🕐 09:30 | Bellesalle Shinjuku Grand Conference Center | 🇬🇧🇯🇵 | 🔗Link: The largest Java community event in Japan, held twice a year. Provides sessions on Java-related technologies and practices, bringing together Java engineers from various disciplines. Lively discussions about Java are encouraged. Held at Bellesalle Shinjuku Grand Conference Center.

• Marunouchi Morning Code | 🕐 10:00 | Dean & Deluca Cafe, Marunouchi, Tokyo | 🇬🇧🇯🇵 | 🔗Link: Free meetup for tech enthusiasts of all levels. Discuss code, web dev, design, cloud, blockchain, or AI. Share projects and ideas. Must register; unregistered attendees pay 3000 yen.

• Dev Japan | 🕐 12:00 | Impact Hub Tokyo, Tokyo | 🇬🇧 | 🔗Link: Gathering for tech enthusiasts in Japan at Impact HUB Tokyo. Work on projects, ask questions, and collaborate with others. Aimed at those who work from home, cafes, or seek a collaborative environment.

• JJUG CCC Spring Lightning Talk | 🕐 17:30 | Bellesalle Shinjuku Grand Conference Center | 🇬🇧🇯🇵 | 🔗Link: Lightning talks at JJUG CCC 2025 Spring social event. 3-minute presentations on Java, engineering, community, etc. Speakers include Masaki ASANO, 佐藤慧太, 工藤, k-hoshihara, さだ, Tanaka Takakiyo, 蓬莱 寿成, Shigeru Urushibara, YujiSoftware, Yoshihiro Yoneyama, and Ikemoto Kouhei.

Sunday, June 8

• Web3 Talk in Tokyo | 🕐 14:30 | Crypto Cafe&bar, Tokyo | 🇬🇧🇯🇵 | 🔗Link: OrbsCafe Special Web3 Talk in Tokyo. Featuring discussions on World ID, Bitget Wallet, stablecoins, and market updates. Speakers include BBB, Vincent Wen, and Nishi. Hosted by Orbs Japan. Coffee and cookies will be served.

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].