求人を保存 検索に戻る 職務内容 求人情報 類似した求人Lead frontend architecture for a high‑traffic consumer platformTackle performance challenges at massive scale企業情報Our client is a major consumer internet and e‑commerce platform in Japan, operating one of the country's largest online marketplaces. The organization delivers high-traffic digital services and continuously evolves its UI/UX and system performance to support large-scale campaigns and peak traffic events.職務内容Understand business priorities and deliver high-quality frontend services within tight schedulesLead projects for assigned services, resolving technical challenges and guiding implementationDesign, develop, test, and release new features as well as enhance existing functionalityMaintain, monitor, and troubleshoot frontend services, including bug fixes and incident handlingDrive system improvements such as refactoring, performance optimization, and architectural enhancementsEvaluate and introduce appropriate technologies and frontend architecturesMeasure load and performance, and implement improvements for scalability and stabilityProduce clear documentation including design specifications and test casesCollaborate with global stakeholders using English in day-to-day communication理想の人材Required Skills & Experience5+ years of frontend development using HTML, CSS, and JavaScript5+ years of frontend development using React, Redux, and TypeScriptExperience developing and maintaining unit tests, E2E tests, and integration testsHands-on experience with JavaScript testing frameworks (e.g. Jest, Intern, WDIO)Strong coding and code review skills with a focus on performance, maintainability, and securityExperience consuming Web APIs (REST, JSON, CORS)Understanding of parallel and asynchronous processing (AJAX, Promise, WebWorkers, WebSockets)Investigation and operational experience in Linux environmentsExperience with software configuration management (Git, Jenkins, etc.)DevOps and system operation experience including analysis and remediationStrong documentation skills (design documents, test cases, specifications)Business-level English communication skillsPreferred SkillsProactive mindset with the ability to identify issues and drive solutions independently3+ years of development team leadership, project leadership, or tech lead experienceAbility to design frontend architecture from scratchExperience with Agile development methodologiesExperience using ESLintExposure to public cloud environments (e.g. GCP)Interest in leveraging AI technologies to improve development processes and services条件・待遇Opportunity to lead frontend engineering for a mission‑critical, high‑traffic platformTechnically challenging environment with real-world performance and scalability demandsCollaboration with experienced engineers in a global, English-speaking contextA role combining hands-on development with technical leadership and influenceコンタクトSerena Wu求人番号JN-042026-7001841電話+81 3 6627 6137求人情報分野IT職種プログラミング＆開発業界小売勤務地東京23区雇用形態派遣社員担当コンサルタントSerena Wu担当コンサルタントの電話番号+81 3 6627 6137求人番号JN-042026-7001841企業タイプ外資系企業
