Leads development across backend/API and frontend for a used-smartphone buying service, strengthening transaction reliability, partner integrations, and product-wide technical direction.
About this role
Belong, an in-house startup of Itochu operating a refurbished-smartphone sales, buyback and rental business, is hiring a Senior Software Engineer for its internal core systems. Belong handles millions of used devices per year and manages an ever-growing variety of iPhone, Android and tablet models, centered on a device master that defines each device's identity and integrates per-unit dynamic conditions (scratches, wear, carrier, etc.). With rapid growth and a major US-market expansion underway, this master-data platform is being spun out from a tech-lead's part-time responsibility into a dedicated team; the role is a core member leading that launch. Full-time (seishain), based at the Tokyo head office in Akasaka. The role is written in Japanese.
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