Japan, Tokyo Weekly Tech Event Digest [`25 Oct 6 - Oct 12]

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 October 6 - October 12. 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, October 6

• UE5 Mobile Game Development Essentials!! | 🕐 11:00 | Osaki Bright Core Hall | 🇬🇧🇯🇵 | 🔗Link: A study session on Unreal Engine 5 focusing on multi-platform development from mobile to console. This event is for those looking to expand their UE5 skills, start with mobile development, or understand the global deployment of UE-based mobile games. Latest insights and workflows will be shared.

• AI x Voice | 🕐 18:00 | Bunkyo City, Tokyo | 🇬🇧🇯🇵 | 🔗Link: This event brings together researchers, engineers, and industry leaders to discuss the state of Voice AI, its challenges, and innovation opportunities. Talks will cover creating natural voice assistants, open-ended conversational chatbots, and building a conversational banking assistant for the Japanese market.

• Compass for the Generative AI Era - Career Strategy for New Graduates | 🕐 19:00 | Line Yahoo Corporation Kyoto Office | 🇯🇵 | 🔗Link: This offline event is for student engineers in Kyoto (graduating 2027) to find their ‘career compass.’ Young and veteran engineers from LINE Yahoo and Sansan will discuss career strategies in the generative AI era. The event includes a panel discussion and a networking session with refreshments.

• Sendagaya.rb | 🕐 21:00 | Online | 🇯🇵 | 🔗Link: A casual online meetup for Ruby and Rails enthusiasts to discuss hot topics, ask questions, and work on projects. This session covers recent conference news, book readings, and collaborative learning. Beginners are welcome. The event will be held on Google Meet.

Tuesday, October 7

• 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.

• After Kaigi on Rails 2025 from pixiv | 🕐 12:00 | Online | 🇯🇵 | 🔗Link: An online follow-up session to Kaigi on Rails 2025, hosted by pixiv. Pixiv’s engineers will discuss their proposals and technical challenges. This lunchtime session is for anyone interested in pixiv’s Rails technology and the outcomes of the conference.

• Idea Validation in the AI Era | 🕐 13:00 | Online | 🇯🇵 | 🔗Link: A small-group review session for validating business ideas in the age of AI. Participants can bring their ideas, even those generated with ChatGPT, to receive direct feedback, refine concepts, clarify next steps for verification, and avoid wasting resources on unviable projects.

• Go Global From Japan | 🕐 17:30 | Value Create, Tokyo | 🇬🇧 | 🔗Link: A panel talk for Japanese startup founders with global clients, who will share their challenges, pain points, and lessons learned. Investors will provide practical advice and perspectives on how startups can successfully go global, aiming to build stronger bridges between Japan and the global market.

• 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.

• UX for AI Study Group | 🕐 20:00 | Online | 🇯🇵 | 🔗Link: This study group aims to learn how to effectively utilize AI in products by studying and discussing articles from a famous expert. It serves as preparation for an upcoming workshop but is open to everyone interested in creating better products and services in Japan using AI.

Wednesday, October 8

• RIKEN AIP Diversity Seminar: Inorganic Materials Science with Big Data | 🕐 13:30 | Online | 🇯🇵 | 🔗Link: A RIKEN AIP Diversity Seminar featuring a talk by Yukari Katsura (NIMS / University of Tsukuba) on intuitively changing inorganic materials science using large-scale data. The seminar will be conducted in Japanese.

• YOKOHAMA CONNÉCT Startup Day | 🕐 16:00 | Tech Hub Yokohama | 🇯🇵🇬🇧 | 🔗Link: This event brings together the Yokohama and Kanagawa startup community to discuss the ecosystem’s future. With support from Amex, administrative officials will explore strategies and visions for the next five years, aiming to foster global growth and create world-class startups from the region.

• TAI x DEEPCORE - DeepTech Pioneers Night 2 | 🕐 19:00 | Kernel Hongo, Tokyo | 🇯🇵 | 🔗Link: This event explores the growth of deep tech startups, featuring a speaker from Chitose Laboratory. The talk will cover business growth, social implementation of bio-research, and AI-driven strategies. The event is for entrepreneurs, researchers, and anyone interested in deep tech and its social implementation.

• Elixir for beginners | 🕐 19:00 | Le Wagon Tokyo - Coding Bootcamp | 🇬🇧 | 🔗Link: A free, hands-on workshop for beginners to explore Elixir and its web framework, Phoenix. This session covers key features like scalability and async tasks, and includes building a demo application. It is ideal for those curious about scalable, fault-tolerant applications.

• 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.

• 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, October 9

• SafePickle: Analysis of Pickle-Based File Threats | 🕐 09:00 | Online | 🇬🇧 | 🔗Link: A security analysis of Pickle-based threats in AI model repositories. This talk identifies flaws in current defenses and proposes a multi-layered approach using robust parsing and a semantic analysis framework with LLMs to improve security, increase extraction rates, and reduce false positives.

• Thursday Gathering #355 | 🕐 16:00 | Cic Tokyo | 🇯🇵🇬🇧 | 🔗Link: A weekly gathering for innovators to connect and learn. This event features sessions on startup organization, global services, AI, and the developer landscape. Attendees can participate in panel discussions and breakout sessions, fostering connections within the innovation ecosystem.

• TAI AHR 11 - AI x IoT | 🕐 18:00 | Tokyo | 🇬🇧 | 🔗Link: An event hosted by Tokyo AI (TAI), Japan’s largest AI community with over 2,400 members. This community includes engineers, researchers, and investors. The specific agenda and speakers for this event are yet to be determined.

• Tokyo Python Meetup | 🕐 18:30 | Blink Roppongi | 🇬🇧 | 🔗Link: An in-person meetup in Roppongi for Python enthusiasts of all levels. The event features a talk by Yuichiro Tachibana from Hugging Face on OSS and community, followed by an open ‘hot-mic’ session for attendees to share their recent Python projects.

• KDD2025 Paper Reading Session | 🕐 18:30 | Line Yahoo Corporation Kioicho Office, Tokyo | 🇯🇵 | 🔗Link: A reading session for papers presented at the KDD2025 data mining conference. The event includes participation reports and paper introductions, and is open to anyone interested in data mining, including students, professionals, and academics, to foster discussion and networking.

• TORYUMON ZERO: Business Model Design & Planning | 🕐 19:00 | Online | 🇯🇵 | 🔗Link: This is the 3rd ‘TORYUMON ZERO’ session, exclusive for participants. Speaker Yusuke Nagano from Delight Ventures will explain business model design and planning, covering how to create plans that appeal to investors. Ideal for those starting their entrepreneurial journey or facing challenges in business design.

Friday, October 10

• Road to NODES | Hybrid Retrieval and RAG with Neo4j | 🕐 01:00 | Online | 🇬🇧 | 🔗Link: A hands-on workshop on building a hybrid Retrieval-Augmented Generation (RAG) pipeline with Neo4j. Learn to combine BM25 search, vector similarity, and graph expansion for accurate results. You will create a knowledge graph and integrate it into a LangChain-powered RAG application, leaving with a ready-to-use system.

• Co-Founder CONNECT - Antler Residency in Japan | 🕐 17:00 | Antler In Japan, Tokyo | 🇯🇵🇬🇧 | 🔗Link: An exclusive matchmaking event for entrepreneurs seeking co-founders. This is a chance to meet like-minded innovators and exceptional founders from the Antler Residency in Japan, a cohort selected from the top 7% of applicants. Engage with exceptional founders and launch successful collaborations.

• NAGOYA CONNÉCT | 🕐 17:00 | Nagono Campus, Nagoya | 🇬🇧🇯🇵 | 🔗Link: A networking event for innovators with multiple sessions. Topics include learning from startup entrepreneurs, legal and risk management for startups, and exploring the potential for Japan-Korea startup collaborations. The event offers both in-person and online participation options to connect the innovation ecosystem.

Saturday, October 11

• DMZ x JVA Startup Hackathon | 🕐 09:00 | Tokyo Innovation Base | 🇬🇧 | 🔗Link: A 2-day startup hackathon for students and entrepreneurs focused on Sustainable Development Goals (SDGs). Organized by Japan Venture Academy and DMZ Japan, the event includes team-based ideation, prototyping, pitching, workshops, and mentorship. Conversational English is required for this on-site event in Tokyo.

• Digital Nomads Morning Activity in Omotesando | 🕐 09:00 | Friend In Hand | 🇬🇧 | 🔗Link: A relaxed morning meetup for digital nomads, expats, and internationally-minded locals to make new connections. Attendees are responsible for their own food and drink costs. Communication will be mainly in English.

• Marunouchi Morning Code | 🕐 10:00 | Dean & Deluca Cafe Marunouchi | 🇬🇧🇯🇵 | 🔗Link: A meetup for anyone interested in code, web development, design, cloud, blockchain, or AI. All skill levels are welcome. Attendees can bring their laptops to discuss what they are working on or learning, and share their projects and ideas with other participants.

• JAWS FESTA 2025 in Kanazawa | 🕐 10:00 | It Business Plaza Musashi | 🇬🇧🇯🇵 | 🔗Link: JAWS FESTA 2025 in Kanazawa is a large-scale event for the AWS User Group Japan (JAWS-UG). It features technical sessions, networking events, and opportunities for corporate and individual supporters. The event will be held at IT Business Plaza Musashi and Omicho Exchange Plaza.

• AWS BuilderCards V2 SecurityExpansion Pack Championship | 🕐 14:50 | Omicho Koryu Plaza, Kanazawa | 🇯🇵 | 🔗Link: A workshop to learn about the Well-Architected Framework’s security pillar using AWS BuilderCards v2. This event offers a pre-release play of the Japanese security expansion pack. Participants will learn how to tackle vulnerabilities and threats by solving incidents with AWS security services.

• JAWS FESTA 2025 in Kanazawa After-Party | 🕐 19:00 | Ana Holiday Inn Kanazawa | 🇯🇵 | 🔗Link: An after-party for the JAWS FESTA 2025 in Kanazawa event. This gathering is intended only for participants of the main conference. The party will be buffet-style, offering alcohol, soft drinks, and light meals.

Sunday, October 12

No events listed.

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].