Mercari Developers

Mercari engineering team - Japan's largest C2C marketplace (and we are also in the US!) 🇺🇸Bangalore Office🇮🇳#MercariIndia @mercari_app @mercari_jp

[Mercari Developers @MercariDev]

Tech blog update📣
"Risk-based adaptive authentication bridges the gap between passwords and passkeys." We model accounts as a spectrum, phasing out weak, phishable factors according to risk, and guiding users toward more phishing-resistant states.
https://t.co/JxZY0ml1Nl

[Mercari Developers @MercariDev]

This is “Rethinking Payment APIs at Merpay: The Exchange Abstraction” by haoyu, a Payment Platform Team at Merpay.
https://t.co/DdQZYmKkpz

[Mercari Developers @MercariDev]

[June 25th 18:00-19:00, Hybrid event]
@akiyamasho_dev from our AI/LLM Team will be presenting as a Panelist at "How Enterprises Are Adopting AI: Real Experiments, Challenges & Opportunities."

Sign up from the link below!
https://t.co/7TSnTE814n

[Mercari Developers @MercariDev]

This is “Scaling Myself: How I Run 22 Claude Code Sessions for DS4 Migration” by cyan, a iOS Engineer at Mercoin.
https://t.co/xJ0ampOFzj

[Mercari Developers @MercariDev]

This is “Build First, Discuss Later: How Prototypes Speed Up Product Decisions” by kubomi, a iOS Engineer at Merpay.
https://t.co/H4pbB3FT6X

[Mercari Developers @MercariDev]

This is “Four Mechanisms Behind EGP Code, an AI-Powered Landing Page Editor” by mattsuu, a Frontend Engineer at Merpay.
https://t.co/Vk0yiigO5J

[Mercari Developers @MercariDev]

This is “Designing a Credit-Management Microservice for Partner Invoice Payment” by imamu, a Backend Engineer at Merpay.
https://t.co/mUuvOV9IEO

[Mercari Developers @MercariDev]

This is “Why we built EGP Code, an HTML-based AI editor for landing pages” by mattsuu, a Frontend Engineer at Merpay.
https://t.co/9VTHwy10Hg

[Mercari Developers @MercariDev]

At “Code w/ Claude 2026,” held on June 10, Mercari AI Taskforce’s Nakai will give a presentation titled “Towardhuman-on-the-loop—HowMercariistransformingoursoftwaredevelopmentintoAI-native”

English interpretation will be provided. We hope you'll join us.
https://t.co/TL3dTDFMWv

[Mercari Developers @MercariDev]

@junya__okabe, our Software Engineer, will be presenting in the following session:

Jul 30th. 11:30-12:00, Level 5 | 503
Beyond Translation: The Journey of Building the Japanese Kubernetes SIG Docs Community
https://t.co/pRPsWPDbJY

#KubeCon + #CloudNativeCon

[Mercari Developers @MercariDev]

We have 2 speakers presenting at #KubeCon + #CloudNativeCon Japan 2026 from Mercari!

Looking forward to seeing everyone at the venue!
https://t.co/W6l7rclJmV

[Mercari Developers @MercariDev]

Ruslan, our Senior Software Engineer, will be presenting in the following session:

Jul 29, 15:50-16:20, Level 4 | 414+415
Taming Billions of Rows: Data Lifecycle Management Lessons from a Cloud-Native Database Migration
https://t.co/fVtuhDYKWr

#KubeCon + #CloudNativeCon

[Mercari Developers @MercariDev]

Shogo, a PM intern at Mercari, developed a Claude Code Skill "mercari-pm-agent" during his internship.
This agent is designed to handle the entire PM workflow—from problem discovery, data collection to PRD creation, and UI mocking—all in a single session.
https://t.co/hL7IPpgDhv

[Takato Ohnishi @onitaka_unchain]

fintech新規事業のデータアナリストチームでマネージャーをしているコンサル出身のikkiさんがコンサルとデータアナリストの親和性について書いてくれています！必見！！
https://t.co/vjBBUF5SDK

[Mercari Developers @MercariDev]

@hi120ki, our AI Security engineer at Mercari, describes how we scaled the operation of Devin across the entire organization, by building a custom Terraform provider and a set of automated management tools, all powered by the Devin Enterprise API.
https://t.co/JIvmA8eJ0s

[Mercari Developers @MercariDev]

"Legacy Image Provider to Cloudflare Images: Traffic Estimation and Safe Rollout" by boyu from the Platform team is published!
This article focuses on the Cloudflare setup and safe rollout and explains the tradeoffs we made to reduce risk.
https://t.co/9ezvaTWtj9

[Mercari Developers @MercariDev]

Mercari is sponsoring #GopherCon 2026 as the Lanyard Sponsor!
Our engineering team from Japan is planning to attend and we look forward to meeting other Gophers at the event!
https://t.co/riQB7N9SOP

[Mercari Developers @MercariDev]

Published "Safe Chunked Execution for Large-Scale Data Updates and Deletions" by @takaidohigasi from Mercari's DBRE team.
Here he explains how our new tool achieves both safety and operational manageability of the large-scale data updates and deletetions.
https://t.co/eIAKhb4ILt

[Mercari Developers @MercariDev]

Our SRE, Mitsuhiro Shibuya (@m4buya) will be speaking at #SREcon26 Americas! "It's Not Always the Network (But Here's How to Prove It): Kubernetes Packet Capture for SREs"
https://t.co/7RKV7x1n39

[Mercari Developers @MercariDev]

Mercari is sponsoring #laravellive Japan in May as a Silver Sponsor!
https://t.co/Wcq7gh5ULn