Major Tech Conferences in Japan (Late 2025)

Major Tech Conferences in Japan (Late 2025)

For international tech companies looking to strengthen their presence in the Japanese market, understanding the local developer community and industry trends is crucial. This article provides a comprehensive list of major tech conferences scheduled in Japan for the latter half of 2025. Use this information about technical domains, venues, and dates to plan your local research activities and marketing strategies effectively.

Dev Productivity Conference 2025

Key Technical Domains: Developer Productivity Date: July 3, 2025
Venue: JP Tower Hall & Conference
URL: Click here
The Dev Productivity Conference 2025 is a premier event for sharing the latest technology trends. Please check the official website for detailed information.

Open Source Conference 2025 Hokkaido

Key Technical Domains: Open Source Date: July 5, 2025
Venue: Sapporo City
URL: Click here
OSC Hokkaido is a significant regional conference focusing on open source technologies. Visit the official website for more details.

SRE NEXT 2025

Key Technical Domains: Site Reliability Engineering Date: July 11, 2025
Venue: TOC Ariake
URL: Click here
SRE NEXT 2025 is Japan’s leading conference dedicated to Site Reliability Engineering practices and innovations.

CoLab Conf

Key Technical Domains: Young Engineers (Under 35) Date: July 13, 2025
Venue: Toranomon Hills Station Tower
URL: Click here
CoLab Conf brings together tech professionals to share insights and foster collaboration in the industry.

JANOG56

Key Technical Domains: Network Operators Date: July 30, 2025
Venue: Matsue City, Shimane Prefecture
URL: Click here
JANOG56 is a major networking event for Japanese network operators and engineers.

Google Cloud Next Tokyo 2025

Key Technical Domains: Cloud Computing Date: August 5, 2025
Venue: Tokyo Big Sight South Exhibition Hall
URL: Click here
Google Cloud Next Tokyo 2025 is the premier cloud computing conference in Japan, featuring the latest Google Cloud innovations.

Kichijoji.pm 2025

Key Technical Domains: Perl Date: September 6, 2025
Venue: Musashino Public Hall
URL: Click here
Kichijoji.pm is a popular Perl community event that attracts developers from across Japan.

Frontend Conference Hokkaido

Key Technical Domains: Frontend Date: September 6, 2025
Venue: Hokkaido Air Water Forest
URL: Click here
Frontend Conference Hokkaido is a regional event focusing on frontend development technologies and practices.

DroidKaigi 2025

Key Technical Domains: Android Date: September 10, 2025
Venue: Bellesalle Shibuya Garden
URL: Click here
DroidKaigi is Japan’s largest Android developer conference, attracting mobile developers from across the country.

Platform Engineering Kaigi 2025

Key Technical Domains: Platform Engineering Date: September 18, 2025
Venue: Nakano Central Park Conference
URL: Click here
Platform Engineering Kaigi focuses on platform engineering practices and infrastructure automation.

iOSDC Japan 2025

Key Technical Domains: iOS, Swift Date: September 19, 2025
Venue: Ariake Central Tower Hall & Conference
URL: Click here
iOSDC Japan is the largest iOS developer conference in Japan, featuring sessions on iOS development and Apple technologies.

Frontend Conference Tokyo 2025

Key Technical Domains: Frontend Date: September 21, 2025
Venue: Abema Towers
URL: Click here
Frontend Conference Tokyo is a major event for frontend developers, showcasing the latest web technologies and practices.

PyCon JP 2025

Key Technical Domains: Python Date: September 26, 2025
Venue: Hiroshima International Conference Center
URL: Click here
PyCon JP is Japan’s largest Python conference, bringing together Python developers and enthusiasts.

Kaigi on Rails 2025

Key Technical Domains: Ruby on Rails Date: September 26, 2025
Venue: JP Tower Hall and Conference
URL: Click here
Kaigi on Rails is Japan’s premier Ruby on Rails conference, focusing on web development with Rails.

Go Conference 2025

Key Technical Domains: Go Date: September 27, 2025
Venue: Abema Towers
URL: Click here
Go Conference is Japan’s largest gathering of Go language developers and enthusiasts.

DevRelKaigi 2025

Key Technical Domains: Developer Relations, DevRel Date: October 2, 2025
Venue: Vision Center Ichigaya
URL: Click here
DevRelKaigi is Japan’s premier conference for Developer Relations professionals, focusing on developer community building and engagement.

builderscon 2025

Key Technical Domains: Developers, Developers Community Date: October 4, 2025
Venue: Saitama Kaikan
URL: Click here
builderscon is a developer-focused conference covering various technical topics and innovations.

Geeksai 2025 (Autumn)

Key Technical Domains: Young Engineers (Students) Date: October 11, 2025
Venue: Toranomon Hills Station Tower
URL: Click here
Geeksai is a tech festival bringing together developers and tech enthusiasts from various fields.

Vue Fes Japan 2025

Key Technical Domains: Vue.js Date: October 25, 2025
Venue: Otemachi Place Hall & Conference
URL: Click here
Vue Fes Japan is the largest Vue.js conference in Japan, dedicated to Vue.js development and ecosystem.

Frontend Conference Kansai

Key Technical Domains: Frontend Date: November 30, 2025
Venue: MyDome Osaka
URL: Click here
Frontend Conference Kansai is a regional frontend development conference in the Kansai area.

Open Source Summit Japan 2025

Key Technical Domains: Open Source Date: December 8, 2025
Venue: To be announced
URL: Click here
Open Source Summit Japan is a major international conference focusing on open source technologies and communities.

Linux Plumbers 2025

Key Technical Domains: Linux, Open Source Date: December 11, 2025
Venue: Toranomon Hills Forum
URL: Click here
Linux Plumbers is a technical conference for developers working on the Linux kernel and core system infrastructure.

JANOG57

Key Technical Domains: Network Operators Date: February 11, 2026
Venue: Osaka City, Osaka Prefecture
URL: Click here
JANOG57 continues the tradition of bringing together network operators and engineers.

PHPerKaigi 2026

Key Technical Domains: PHP Date: March 20, 2026
Venue: Nakano Central Park Conference
URL: Click here
PHPerKaigi is Japan’s largest PHP conference, focusing on PHP development and best practices.

RubyKaigi 2026

Key Technical Domains: Ruby Date: April 22, 2026
Venue: Hakodate Citizens Hall + Hakodate Arena
URL: Click here
RubyKaigi is Japan’s premier Ruby conference, attracting Ruby developers from around the world.

JANOG58

Key Technical Domains: Network Operators Date: July 15, 2026
Venue: Ehime Prefectural Culture Center (Matsuyama City, Ehime Prefecture)
URL: Click here
JANOG58 will continue to serve as a key networking event for Japan’s network operator community.


Japan has a strong culture of knowledge sharing and technical communication among developers, making conferences an excellent opportunity for brand awareness and market penetration. The events listed above are all highly regarded within the industry and can serve as valuable touchpoints for tech companies looking to establish or strengthen their presence in the Japanese market. These conferences provide unique opportunities to engage with local developers, understand market needs, and build meaningful relationships with the Japanese tech community.

MOONGIFT supports your DevRel & developer marketing in the Japanese market. If you’re interested, please contact us.

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