Application Engineer - Platform Department, System Division, Rakuten Card Co., Ltd.

2 Locations💼 Full-time🗓 2026-01-08 → 2026-07-31

Core

Design, develop, and test APIs supporting Rakuten Card's user-facing website and mobile application while implementing quality improvements through automated testing.

Role type

Application Engineer (Backend/API)

Builds

RESTful APIs for credit card services and internal operational tools

Domain

Fintech / Credit Card Payments

Deliverable

production ML models | product features | infrastructure

Required skills

Java 8+, Java EE/JPA, RESTful API design, automated testing, Git/GitHub

Preferred skills

Agile development, UNIX/Linux, SQL, TCP/IP, API gateway, cloud lift-and-shift

Technologies

Java, JPA, REST, Git, GitHub, Linux, SQL

Responsibilities

Design and develop APIs for user-facing services, implement automated testing practices, collaborate with offshore teams, contribute to cloud migration initiatives

Seniority

Mid-career IC

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