Doorkeeper

TokyoDev Talks Vol. 6: Elixir-Fueled Startups

Thu, 10 Jul 2025 18:30 - 21:00 JST

Tokyo Innovation Base

東京都千代田区丸の内3-8-3

Register
Free admission
Registration closes 10 Jul 21:00
There is room for 12 more people

Description

Join us for the sixth 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, etc). If you're unsure whether you're qualified to attend, please get in touch.

Agenda

18:30 〜 19:00 Doors open

Enjoy talking with the other participants before the presentations begin. Drinks and snacks will be provided by Lunaris Japan and Spider Labs.

19:00 〜 19:05 Opening - Paul McMahon

We'll kick things off by welcoming everyone and giving a short introduction of the event.

19:05 〜 19:30 ​Classifying Billions of Events Every Day: How We Use Elixir in Production at Spider Labs to Protect Customers from Fraud — Eurico Doirado

In this talk, CTO Eurico Doirado will share why the team chose Elixir and the BEAM ecosystem to process billions of events daily, and how it powers their real-time fraud detection systems. He’ll walk through their current architecture, the role of Elixir in production, how they scaled to support real-time reporting, and key lessons learned from building high-throughput, low-latency systems.

About Eurico

Eurico is the CTO at Spider Labs, where he leads the development, research, and product teams. Before joining Spider Labs, he worked on core technology in the video games industry.

19:30 〜 19:55 One Stack to Rule Them All: Elixir for Everything from UI to Infrastructure — Hampus Hammarlund

Lunaris builds a range of eCommerce solutions, from tools that help businesses manage operations to backend systems that process high volumes of events across many services. In this talk, Hampus will share how Elixir supports both ends of this spectrum—enabling quick iteration and solo developer productivity on one hand, and massive concurrency with fault-tolerant reliability on the other. You’ll get a look at the kinds of systems Lunaris builds, why Elixir is well-suited for them, and what it’s like to scale real-world software with a language designed for both resilience and joy.

About Hampus

At Lunaris, Hampus is the lead developer of Smapify, a syncing application that bridges Shopify and Japan's largest POS vendor Smaregi. Previously, he worked at a KDDI R&D lab focused on prototyping health applications.

19:55 〜 20:00 Closing - Paul McMahon

A short wrap-up for the presentation portion of the event.

20:00 〜 21:00 Open Networking

Discuss the presentation or anything else with the other attendees.

About TokyoDev

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.

About Lunaris Japan

Lunaris started out as an otaku-centric online shop called Solaris Japan, and now offer solutions to other e-commerce platforms. We're small enough to where your ideas and work can have a huge impact but self-funded, and mature enough to be stable.

About Spider Labs

Spider Labs helps companies fight online fraud at scale, tackling challenges like ad fraud, scalping, and bot traffic.

Code of Conduct

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.

About this community

TokyoDev

TokyoDev

Get-togethers for developers interested starting and growing a career in Japan. Organized by TokyoDev.

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