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AI-Driven Engineer (Front-end & Back-end) - IT Division, Rakuten Securities, Inc.(Secondment)

Tokyo, Japan💼 Full-time🗓 2026-09-04 → 2026-09-26

Core

Engineer to lead the adoption of AI-driven development practices (using LLMs, GitHub Copilot, Cursor) for front-end and back-end systems, ensuring code quality and speed in a high-security financial environment.

Role type

Senior IC Full-Stack Engineer (AI-Driven Development)

Builds

Web services, mobile apps, and core financial systems for Rakuten Securities

Domain

Financial Services / AI Engineering

Deliverable

production ML models | product features | infrastructure

Required skills

Front-end development, Back-end development, AI tool integration (GitHub Copilot, Cursor), CI/CD automation, Legacy code modernization, Technical process optimization

Preferred skills

Financial system development, AI agent workflow construction, Infrastructure automation (Docker/Kubernetes, Terraform), Project leadership

Technologies

GitHub Copilot, Cursor, AWS, Azure, GCP, Terraform, Ansible, Jira, Confluence, Slack

Responsibilities

Optimize code generation and UI implementation using AI partners, Integrate AI-assisted design and automated testing into back-end systems, Deploy AI-driven development practices organization-wide through workshops and knowledge sharing

Seniority

Senior, hands-on IC

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