KINTOテクノロジーズ の技術ブログ
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TypeScript "infer" Tips
2025/02/27
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This article is part of day 2 of KINTO Technologies Advent Calendar 2024 . Introduction Hello! This is high-g ( @high_g_engineer ) from the New Car Subscription Development Group at the Osaka Tech Lab. Recently, solving TypeScript type puzzles, known as type-challenges, has become part of my daily morning routine before work. In this article, I will introduce some infer tips in the TypeScript type system that are a little quirky. First, before explaining infer, I will explain Conditional Types ,
JSConf JP 2024 Participation Report
2025/02/26
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Introduction Hello! JSConf JP 2024 recently took place, and we were proud to support it as a premium sponsor! In this post, we’d like to share a session report from our team members who attended the event firsthand! ITOYU You Don’t Know Figma Yet - Hacking Figma with JS https://jsconf.jp/2024/talk/hiroki-tani-corey-lee/ Since Figma runs in a browser, I learned that you can use JavaScript in DevTools to manipulate it. You can use Figma’s official API via the figma global object to retrieve
10月・11月入社メンバー紹介
2025/02/26
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こんにちは こんにちは、2024年10月入社のたなちゅーです！ 本記事では、2024年10,11月入社のみなさまに、入社直後の感想をお伺いし、まとめてみました。 KINTOテクノロジーズ（以下、KTC）に興味のある方、そして、今回参加下さったメンバーへの振り返りとして有益なコンテンツになればいいなと思います！ H.I 自己紹介 はじめまして。このたびモバイルアプリ開発グルー
langgraph-supervisorでマルチエージェントシステムを構築した
2025/02/25
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はじめに こんにちは！ KINTOテクノロジーズの生成AI活用PJTで生成AIエンジニアを担当しているAlexです。 最近、LLM（大規模言語モデル）を利用したマルチエージェントシステムの需要が急速に高まっています。今回、LangGraphの最新アップデート「langgraph_supervisor」を活用し、わずか30分以内でSupervisor型マルチエージェントシステムを構築した実例をご紹介します。このシス
From Hackathon to Business Asset: Toyota Community by KINTO
2025/02/25
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👋 Introduction Hi there! I’m Moji, the product designer behind Toyota Community by KINTO platform. Today, I’m excited to share the story behind its creation; a journey of collaboration, innovation, and designing with purpose. For me, design goes far beyond aesthetics; it’s about solving problems and balancing user needs with business goals. That’s why the Toyota Community by KINTO has been such an inspiring project for me. Toyota Community by KINTO logo and mobile interface mockups sh
GitHub Copilot と Cursor エディタ、両方課金してメリット・デメリットを比較してみた
2025/02/25
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KINTO テクノロジーズの酒巻裕也です。 普段はデータの分析から施策提案、機械学習を用いた機能の開発に従事しています。 以前は Prism Japan のAI機能開発を担当していました。 社内で Cursor と GitHub Copilot の比較検証を行ったので、その結果をご紹介します。 前提 KINTOテクノロジーズ社内では GitHub Copilot が標準備品として使えるルールがある。 Cursor エディタを利用するこ
Troubleshooting Slack CLI: Resolving block_id Conflicts When Sending Messages
2025/02/21
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This article is the entry for Day 5 of the KINTO Technologies Advent Calendar 2024 Hi, I'm Ryomm, also known as "The Phantom Bot Craftsman", and I develop the My Route iOS app at KINTO Technologies. Here’s a quick tip from Manabyi . Although this article focuses on Slack CLI, it’s important to note that it operates using the Slack API internally. Consequently, the same issue can arise when interacting directly with the Slack API. Background While using Slack CLI, I encountered
Migrating to MapKit: A New Chapter for Unlimited App
2025/02/20
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This aricle is the entry for day 19 in the KINTO Technologies Advent Calendar 2024 🎅🎄 Hello, I am GOSEO, an iOS engineer in the Mobile App Development Group at KINTO Technologies. Currently, I’m working on the app Unlimited. Interestingly, 66% of the iOS developers working on Unlimited are from overseas, and I enjoy chatting with them in English every day. I am also a fan of Paradox games and am currently hooked on Crusader Kings Ⅲ. This article is the entry for day 19 in the [KINTO Te
[Manabi-no-Michi-no-Eki (Learning Roadside Station)] Podcast - A New Initiative for In-House Study Sessions: "Joint Study Group"
2025/02/19
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This article is the entry for Day 12 of the KINTO Technologies Advent Calendar 2024 🎅🎄 Hi, I’m Nakanishi from the Manabi-no-Michi-no-Eki (Learning Roadside Station) team. This year, the Learning Roadside Station project was officially launched and structured as an organization. As part of our initiatives, we also run an in-house podcast, and for this year’s Advent Calendar, we’d like to share more about it. What is Manabi-no-Michi-no-Eki (The Learning Roadside Station) It's a pro
8月・9月入社メンバー紹介②
2025/02/19
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はじめに こんにちは、9月入社のMizukiです！ 本記事では2024年8、9月入社のみなさまに、入社直後の感想をお伺いし、まとめてみました。 KINTOテクノロジーズに興味のある方、そして、今回参加下さったメンバーへの振り返りとして有益なコンテンツになればいいなと思います！ K.W 自己紹介 グループコアシステム部 共有サービス開発G JP会員PFチーム所属のPdMです。 新卒
Implementing Screenshot Testing in the Unlimited Android App Was Tougher Than Expected
2025/02/18
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This article is the entry for day 13 of the KINTO Technologies Advent Calendar 2024 🎅🎄 Hello! My name is fabt and I am developing an app called Unlimited (its Android version) at KINTO Technologies. I have recently implemented a screenshot test, which has been much talked about, so I will introduce the steps of it, the stumbling blocks I encountered and how to solve them. I hope this will be helpful for those who are considering implementing a screenshot test in the near future. What is Sc
Investigating the Cause of a Deadlock in Aurora MySQL 3 series in a Production Environment
2025/02/17
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Introduction Hello! I'm Nakatani ( @tksnakatani ) from the Common Service Development Group, where we plan and develop essential functions across web and mobile app services, including membership and payment platforms. In this article, I'll share a case of an Aurora MySQL deadlock that occurred in a production environment at a payment platform—one of those "close-call incidents" that many of us have likely encountered at least once. The Incident Leading to the Deadlock One da
[Manabi-no-Michi-no-Eki] We Turned Internal Study Session Videos into a Platform and Made Them Viewable All in One Place
2025/02/14
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Introduction Hello! I am Akeda, a member of both the Corporate IT Group and the Technology Public Relations Group, and of the Manabi-no-Michi-no-Eki Team as well. (“Manabi-no-Michi-no-Eki” literally means “roadside station of learning.”) As a corporate engineer, I am usually doing things like on/offboarding related for IT equipment, and improving the processes and work within the groups. In this article, I would like to share the story of how I, a corporate engineer, happened to get invo
Calling Generative AI (Azure OpenAI) with Java
2025/02/13
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This article is the entry for day 9 in the KINTO Technologies Advent Calendar 2024 . Introduction Hello, I'm Kameyama, an application engineer in the Digital Transformation Development Group. In recent years, generative AI has been applied across different fields, and our development team is also working on building systems that makes the most of its capabilities. Furthermore, since Java is widely used within our development team, we believed it would allow us to efficiently build an interfa
【新コミュニティ発足】モバイルUIテストの可能性を広げる「Appium Meetup Tokyo」
2025/02/13
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技術広報Gの中西です。この度新たなコミュニティを立ち上げることになったのでこちらで告知致します。 モバイルアプリの市場は年々拡大し、サービスの差別化には迅速かつ高品質なリリースが求められるようになりました。そんな状況下で注目を集めるのが、Seleniumに近い操作感でiOS/Androidアプリをテストできる Appium です。ただし、OSのバージョン差や環境構築の難し