Leads customer implementations of LLM and generative-AI systems from architecture through production, building full-stack solutions and improving model quality.
About this role
This frontend engineering role sits within the Business Systems Development division, which is building Crew Agent as an internal platform for store-service operations. The product brings together AI agents that support search, recommendations, registration, voice input, customer information display, and other tasks used by SoftBank crew. The work focuses on turning these capabilities into a practical, continuously improving user experience.
The engineer designs and implements Crew Agent screens with React and TypeScript, including streaming chat interfaces, component structures, screen transitions, state management, REST API integrations, and cache or store management with React Query and Zustand. The role also covers unit, UI, and end-to-end testing, performance optimization, and incorporating feedback from users in the field. Required experience includes container application development with Kubernetes and Docker, at least three years of React-based web frontend development, TypeScript or JavaScript with HTML and CSS, frontend work involving backend APIs, and practical experience with component design, state management, and testing.
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