Hello! I’m @mikichin from the Mercari Engineering Office.
On November 13th, we will be holding “mercari GEARS 2025,” the Mercari Group’s tech conference!
After seven years since our last “Mercari Tech Conf 2018,” we are finally returning to an offline event.
The theme of the event is “Mercari’s Engineering Today.”
We will introduce how engineering within the Mercari Group has evolved since 2018 from the perspectives of technology, organization, and culture—covering not only this year’s company-wide theme “AI-Native” but also the broader changes.
There will be no online streaming, so please come to the venue and see and hear it for yourself!!
Please check here for the session introduction article.
PASSION Stage URL:https://engineering.mercari.com/en/blog/entry/20251008-mercarigears2025-passion-stage/
GROW Stage URL:https://engineering.mercari.com/en/blog/entry/20251009-mercarigears2025-grow-stage/
MECHANISM Stage URL:https://engineering.mercari.com/en/blog/entry/20251010-mercarigears2025-mechanism-stage/
This article introduces ways to enjoy offline events beyond just the sessions!
FLOOR MAP

The venue features three stages—PASSION Stage, GROW Stage, and MECHANISM Stage—inspired by the Mercari Engineering Principles, which articulate the shared beliefs and behaviors that form the foundation of Mercari’s engineering organization. Presentations can be heard here.
Additionally, there is a COLLABORATION Lounge which hosts Ask the Speaker and Tech Quiz, an Unconference room for bringing in topics to discuss, and a Break Area.
STAMP RALLY

Upon arriving at the venue, please pick up your name tag at the reception. To help participants easily strike up conversations, please write up your name you want to be called, specialized technical field, and where you are affiliated on it.
We will be handing out a Stamp Rally card along with your name tag. Details about the Stamp Rally are explained on the card. You can earn stickers by not only by attending sessions or answering the Tech Quiz, but also sharing and exchanging it with the other participants. The goodies you receive depends on how many stickers you collect, so be sure to try and collect them all!
Poster Session
This event features not only presentations but also a poster session. This time, we have 14 poster presentations not just from the Engineering organization, but also including research from the Mercari R4D Lab. For details on the poster session, please check the blog post below.
https://engineering.mercari.com/en/blog/entry/20251029-mercarigears2025-poster/
At the poster session, presenters will be standing in front of their posters, so you can ask questions and exchange information. Please feel free to stop by.
*Please note that presenters will not always be standing in front of their posters. There will be times when they are not present.
Ask the Speaker
Sessions aren’t over once they end. After each session, we provide time for you to speak directly with the speakers. This is a valuable opportunity to resolve questions and deepen your understanding—from detailed topics not covered during the session to candid questions.
Please visit the “COLLABORATION Lounge.”
Unconference Area
No need to wait for pre-set topics. Bring your own discussion topics and start a conversation right away. Exchange views with Mercari members, or use the day’s themes as a starting point to share insights. Make the most of this space where knowledge and experience intersect.
Please come to the “Unconference” room.
Tech Quiz
Why not try the quizzes prepared by Mercari’s specialists? We’ve prepared quizzes for each technical area, such as Backend and Client. Don’t worry if it’s a field you don’t usually work with.
Some of the quiz creators will be in the Tech Quiz Area, so feel free to say hello. Also, let’s brainstorm and think together with other participants!
Original goods and sweets

These are the original “mercari GEARS 2025” goodies prepared for this event.
Be sure to collect stickers and get them at the “Stamp Rally Kiosk”!

Please pick up original sweets and coffee at the Coffee Stand to enjoy while chatting with fellow participants.
At “mercari GEARS 2025,” we hope to create more than just a platform for information sharing. We aim to foster experiences unique to offline events and generate new opportunities through interaction.
We have prepared a variety of content beyond presentations, so we encourage you to actively participate.
To apply for “mercari GEARS 2025,”click here.
Event Details
Event Date and Time:
November 13th (Thu), 2025 11:00-18:00
Overview:
mercari GEARS 2025 is a tech event that invites you to experience the culture and technical challenges of Mercari’s Engineering Organization first-hand.
More than a series of information-sharing sessions, the event is a place for engineers to meet, share their experiences, and create new opportunities through interaction.
Held on November 13th, the event caters to software engineers working at tech companies and people interested in Mercari Group’s technologies.
Participation fee: Free
Venue:TODA HALL & CONFERENCE TOKYO
How to Participate: Please register on this page.
【Official Site】
For any additional information about this event, we will announce it on @MercariGears as it becomes available. If you’re interested, please follow us.

