Senior Software Engineer (Frontend)

About the Company

- The Platform Division supports engineers involved in product development, providing expertise in QA, SRE, and security while building infrastructure and common platforms. The Frontend Improvement Team is a newly established group with a mission to “unlock developer potential,” enhancing the environment for frontend developers to work more productively. Our engineering team is multinational, with 20% of our development members coming from regions such as Asia, Europe, and North America. We operate in a global team environment using both English and Japanese.

About the Role - As a Frontend Developer, you will be responsible for developing the frontend of our AI data platform and related products.

Responsibilities

• Lead technology selection and architectural design in a fast-growing service environment
• Develop and maintain sustainable and maintainable frontend applications
• Define technology strategies based on business objectives and provide technical leadership to the development team
• Rapid hypothesis testing and improvement of product features
• Design the overall architecture of the frontend system
• Design and implement standard UI components
• Improve UI/UX in collaboration with designers
• Evaluate and select middleware and frameworks

Qualifications - 7+ years of experience in frontend development for web applications. Business-level English proficiency.

Required Skills

• Proficiency in TypeScript
• Experience in designing and implementing reusable UI components
• Proven ability to lead technology selection, requirement definition, and architectural design

Preferred Skills

• Experience in developing and operating large-scale services
• Experience in user interviews and UI/UX optimization
• Backend development experience using Node.js
• Experience with GraphQL and Apollo for Backend-for-Frontend (BFF) development
• Web performance optimization experience
• Development experience utilizing SSR, CSR, SSG, AMP, or PWA technologies
• Japanese language proficiency (JLPT N2 or higher recommended)