GAIDOOR株式会社

This company is one of Japan’s most established and respected enterprises, with over 1,200 employees and a remarkable 400-year history in the construction industry. The CEO graduated in the United States and is highly committed to innovation—has made a strategic decision to build the company’s first-ever in-house digital and product development organization. To achieve this, he has recruited some of Tokyo’s top technology leaders, including a world-class CTO & CIO. The company aims to become a global leader in DX solutions and already has offices in: India Singapore Indonesia Vietnam

Backend Engineer

Location

Japan

Posted

22 hours ago

Salary

¥6,000K - ¥11,000K / year

Seniority

Mid Level

Job Description

Backend Engineer

GAIDOOR株式会社

Role Description 弊社の主要クライアントの1社であるLINEヤフーグループ企業にて、月間3,000万人以上が利用する大規模サービスの開発をリードするBackend Engineerを募集しています。 Ruby on Railsを中心としたバックエンド開発を通じて、ユーザーの意思決定を支えるプロダクト改善、新機能開発、サービス成長に直接貢献できるポジションです。 業務内容 - Ruby on Railsを中心としたバックエンド設計・開発・運用 - 担当チームにおける機能開発のリード - 開発案件の見積もり・計画・リリースまでの推進 - バックエンド領域における設計方針策定・改善 - 既存システムの改善・リファクタリング - 技術的負債の解消、開発生産性向上 - PdM・デザイナー・ビジネスメンバーとの要件定義 - ユーザーインタビューやABテストを活用したプロダクト改善 このポジションの魅力 - LINEヤフーグループ企業の大規模プロダクト開発に携われる - フルリモート勤務可能 - 月間3,000万人以上が利用するサービスへ影響を与えられる - Ruby on Railsを中心としたモダンな開発環境 - 少人数チームで大きな裁量を持って開発可能 - PdM・Businessサイドと近い距離でプロダクト開発ができる - AIを積極活用する開発文化 - Claude Code・Codex・Cursor・GitHub Copilot・DevinなどAIツール利用可能 - 技術負債改善や新技術導入を積極的に推奨する文化 - RubyKaigiスポンサーなど技術コミュニティへの投資 - 書籍購入・資格取得・カンファレンス参加支援あり Qualifications - Rubyを用いたWebアプリケーション開発経験(3年以上目安) - Ruby on Railsを用いた設計・開発経験 - チーム開発経験 - エンジニア以外のメンバーとのコミュニケーション経験 - ビジネスレベルの日本語能力(JLPT N1相当) - 日本語での設計議論・ドキュメント作成・チームコミュニケーション能力 歓迎 - GraphQL - Elasticsearch - Go - Rails Wayに沿った設計・運用経験 - RDBスキーマ設計経験 - Database Performance Tuning - Tech Lead経験 - メンバー育成経験 - AWS / GCP環境での開発経験 - 大規模Webサービス開発経験 - 自社プロダクト開発経験 - Frontend開発経験 求める人物像 - ユーザー価値を第一に考えて開発できる方 - ビジネス課題を技術で解決することに興味がある方 - プロダクト成長にコミットしたい方 - チームで議論しながら開発を進めることが好きな方 - 新しい技術やAI活用に積極的な方 - 技術だけではなく事業インパクトにも興味を持てる方 Benefits - 想定年収: 600万円〜1,100万円 - 勤務地: 東京都中央区築地 (フルリモート可) - 各種社会保険完備 - 交通費支給 - フルリモート勤務制度 - フレックスタイム制度 - PC貸与(希望スペック選択可能) - 書籍購入補助 - 資格取得支援 - 技術カンファレンス参加支援 - 社内勉強会 - AIエージェント利用補助制度(月額10万円まで) - 子育て支援制度 選考フロー - 書類選考 - 面接(2〜3回予定)

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