東京都千代田区丸の内3-8-3
Join us for the ninth instalment of TokyoDev Talks, where we have presentations that cut across the stack from engineers working at some of the most interesting tech companies in Japan.
Note that attendance for this event is limited to software developers, those aspiring to become one, or working in an adjacent position (e.g. Product Managers, UI/UX Designers, Security Engineers, QA Engineers, etc). If you're unsure whether you're qualified to attend, please get in touch.
This event is being held at Tokyo Innovation Base (TiB). When attending it, you'll also need to complete the free registration process with TiB if you have not already done so. You are strongly encouraged to complete this in advance, as otherwise you'll need to complete it on site before you're allowed into the venue.
Enjoy talking with the other participants before the presentations begin. Drinks and a light meal will be provided by TokyoDev.
We'll kick things off by welcoming everyone and giving a short introduction of the event.
The AI agent ecosystem offers endless tools but no proven playbook, everyone's still figuring it out. I'll share our journey building AgentForward, from failed experiments to a platform now serving many users, including our breakthrough patterns for persistent memory and agent orchestration.
Over 16 years in software engineering, I’ve helped teams turn ambitious ideas into production-ready systems. Recently, my work centers on building intelligent agent platforms that bring order to complexity.
Alpaca runs a FinTech platform operating across multiple jurisdictions while still sharing core order management and account systems. To support this, we use a loosely coupled ledger federation pattern, maintaining independent ledger instances per jurisdiction (US, Japan, etc.) while relying on shared trading infrastructure.
This presentation will dive into the subledger/omnisub pattern that makes this possible. We'll explain how we used Redpanda to build an event-driven architecture that decouples communication between systems, and walk through the practical challenges we faced—from cross-ledger identity mapping and maintaining event-ordering consistency to implementing idempotent operations for financial reliability—along with the solutions we developed.
Kenji Nakamura is a Tokyo-based engineering leader in Alpaca's New Markets division with deep experience in backend systems, large-scale infrastructure, and building high-performing engineering teams. He worked for startups in the San Francisco Bay Area for 2 decades. he served as a Principal Engineer at Nubank, a Brazilian financial technology company and the largest fintech bank in Latin America, and as CTO at Parkside, a U.S. fintech providing access to U.S. equities for global customers.
Discuss the presentation or anything else with the other attendees.
We're looking for speakers. You can find more details and submit a proposal here.
TokyoDev's job board is filled with software developer positions at Japanese companies whose engineering team’s primary language is English. From the big companies you’ve already heard of, to smaller up-and-coming startups, our positions offer you the chance to live in Japan but work in an international environment.
All attendees, speakers, sponsors and volunteers at our event are required to agree with the following code of conduct. Organisers will enforce this code throughout the event. We expect cooperation from all participants to help ensure a safe environment for everybody.
TokyoDev is dedicated to providing a harassment-free experience for everyone, regardless of gender, gender identity and expression, age, sexual orientation, disability, physical appearance, body size, race, ethnicity, religion (or lack thereof), or technology choices.
We do not tolerate harassment of event participants in any form. Sexual language and imagery is not appropriate for any venue, including at the event itself and other online media.
Participants violating these rules may be sanctioned or expelled from the event at the discretion of the organisers.
If you are being harassed, notice that someone else is being harassed, or have any other concerns, please contact a organizer immediately. Alternatively, you may contact us via our contact page.
Get-togethers for developers interested starting and growing a career in Japan. Organized by TokyoDev.
Join community
