Web UI/UX Engineer - Frontend System Development Department, Rakuten Payment, Inc.
Confirmed on the employer's own hiring board on Sep 25, 2026. First seen by Alion on Sep 18, 2026.
Job Description:
Business Overview
Join us in building the next generation of internet services that reach hundreds of millions of users across the globe.
Rakuten Group, Inc. is on a mission to empower individuals and society through innovation and entrepreneurship. Today we have 70+ businesses in 29 countries across a range of sectors, with a key part of this being our presence in FinTech and Rakuten Payment, Inc.
Our global solutions enable end-users and merchants to quickly and safely make and accept payments. Furthermore, we strive to delight our end-users by bringing them the full benefits of Rakuten membership in our Payment offerings, leveraging our famous Rakuten Points.
Department Overview
Rakuten Payment, Inc. Frontend System Development Department oversees development for all Rakuten Payment services. Our vision is to build and shape payment technologies that support our users’ daily lives today and in the future.
The Frontend System Development Department handles development for the Rakuten Pay mobile application, which serves as a gateway to all Rakuten Payment services and Rakuten’s FinTech ecosystem. Our mission, as a key driver of Rakuten Payment, Inc. services, is to attract and delight end-users with robust and convenient services.
The department developers cover a wide range of user services, including service sites, campaigns, and advertisements, as well as critical mobile app functions. This is achieved through a hybrid mobile app approach.
Position:
Why We Hire
At the department, we are committed to maintaining and enhancing Rakuten shoppers’ experience by organizing autonomous cross-functional teams, able to take ownership of dedicated product areas within the shared app. Due to the growing responsibilities of our department, we are looking for a UI/UX Engineer to help drive forward our innovative products and solutions across Rakuten Group, Inc. and Rakuten Payment, Inc.
Position Details
Position Responsibilities
- Contribute to the development and growth of the Rakuten Pay mobile app
- Collaborate with cross-functional team members to understand business objectives and technical details, incorporating them into design and delivering value from inception to service release
- Lead development projects to proactively solve business challenges
- Take ownership of dedicated product areas, committing to continuous improvement on product strategy and user experience
- Foster a culture of knowledge sharing and continuous learning within the department and company
Mandatory Qualifications:
- Frontend development experience using HTML, CSS, and JavaScript
- Experience with at least one modern JavaScript web development framework (e.g., React.js, Vue.js, Svelte, Next.js)
- Experience in maintaining product quality through version control, automated testing, and technical debt management
- Knowledge of modern CSS preprocessors/frameworks (e.g., Sass, SCSS, Tailwind, Daisy, Bulma)
- Knowledge of TypeScript and HTTP protocols
- Knowledge of contemporary UX research techniques (e.g., A/B testing, Multivariate testing)
- Strong desire to improve UX through a deep understanding of both the system and the produc
Desired Qualifications:
- Bachelor's degree in Computer Science or a related field (or equivalent practical experience)
- Experience developing Progressive Web Apps (PWAs), Single-Page Applications (SPAs), and Server-Side Rendering (SSR) applications
- Experience with cloud services and/or Content Delivery Networks (CDNs), such as Firebase
- Knowledge of utilizing AI and Machine Learning technologies
- Knowledge of build tools (e.g., webpack, Vite)
- Basic knowledge of databases, backend development, and/or mobile development
- Interest in web accessibility and other web standards (e.g., W3C).
Other Information:
Additional information on Location
NBF Shinagawa Tower
Additional information on Secondment
This position will be hired by Rakuten Group, Inc. and seconded to Rakuten Payment, Inc.
※For more information, please refer to the links below:
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