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 Frontend Engineer for its consumer-facing buyback service Nikosuma Kaitori. The engineer drives the product's growth through frontend development, starting in the buyback area and expected to grow into a full-stack engineer who sees the whole product, including links to the sales site and the B2B buyback platform Belong One.
The work covers frontend development and operation for Nikosuma and Nikosuma Kaitori, organising and leading non-functional requirements such as performance, security and accessibility, and lifting the team through code review and documentation. The engineer also coordinates specifications and design with executives and product owners, customises Shopify, builds private apps and improves admin screens, handles releases, maintenance and on-call duty, and shares technical knowledge inside and outside the company. Joining is partly about strengthening the buyback team and speeding up development; the team works hybrid, three days a week in the office.
This is an AI-generated summary of the employer's original posting — details can be incomplete, out of date or simply wrong. Always confirm everything on the official posting before applying.
Similar jobs
Designs, builds and improves corporate networks, firewalls and wireless LAN; resolves incidents and coordinates with internal teams and partners. Requires enterprise-network experience.
Lead the design, development, and operation of the internal operation system supporting the circulation of used devices.
Develop and operate client programs for smartphone, console, and PC games. Build gameplay and user-facing systems, animation, graphics, and networking features, plus Unity tools.
Design and implement scalable data pipelines using Databricks Lakehouse Platform, collaborating with engineers and data scientists.
Build web and mobile apps, backend systems, and AI agents in an in-house team. After three months of training, work across planning, development, and operational improvement.