[English Only] Lead JavaScript SDK Engineer＠Best e-commerce

• Work on a massive real-time data platform processing billions of events daily
• Take ownership as a technical leader, shaping SDK architecture and developer exp
• 企業情報

The client operates a large-scale data and analytics platform that aggregates online and offline user data for advanced analytics and marketing use. Their systems process billions of events in real-time and support critical business decisions across multiple services.

• 職務内容
• Lead development and maintenance of JavaScript/TypeScript SDKs for web applications
• Own and improve developer tools such as Chrome extensions and analytics debuggers
• Collaborate with cross-functional teams (Web, iOS, Android) for seamless SDK integration
• Design and implement features to enhance developer experience and platform usability
• Conduct code reviews and enforce best practices across the engineering team
• 理想の人材
• 5+ years of experience in JavaScript / TypeScript development
• Strong experience in SDK development for web applications
• Proven experience leading development of widely-used SDKs
• Deep understanding of modern frameworks (React, Angular, or Vue.js)
• Experience with unit testing frameworks (e.g., Jest)
• Familiarity with build tools such as Webpack or Vite
• 条件・待遇
• Long-term contract (initial 2 months, renewable every 3 months)
• Highly technical leadership role in a data-intensive environment
• Work on systems processing billions of daily events
• International, English-only engineering environment
• Working hours: 9:00 - 17:30 (Weekdays only)
• Opportunity to influence developer experience at scale
• *Contact: Hikari Takamura
• *Quote job ref: JN-032026-6979867