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 Itochu in-house startup built on used smartphones, hires a Senior Frontend Engineer to lead the development team behind its consumer services Nikosuma and Nikosuma Kaitori. These services give customers a good experience and support partner-company campaigns, so reliability matters.
The engineer handles frontend development and operation for the two services end to end: designing, building, testing and running web UIs for internal and external use. The work includes customising Shopify, building Shopify apps and improving admin screens, organising and leading implementation of non-functional requirements, and designing APIs together with backend engineers. The engineer writes readable, reusable code following best practice, lifts the team's skills through code review and communication, mentors junior members, and shares knowledge inside and outside the company. Leadership and initiative are expected of every frontend engineer, with hybrid work of roughly two to three office days a week.
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