Senior Frontend Engineer

Senior Frontend Engineer for PayPay Card mini-apps and web frontends, focusing on scalability and maintainability. Responsibilities include collaborating with Product Managers, Designers, and tech teams to implement features; improving frontend architecture based on product/roadmap; delivering on product and organizational vision; contributing through knowledge sharing, code reviews, and upholding coding best practices; enhancing long-term technical quality; triaging, debugging, and resolving product issues; leading design/implementation of large-scale systems and coordinating with stakeholders across non-engineering and engineering teams; leveraging existing infrastructure to tackle large challenges; maintaining quality standards and acting as a gatekeeper; and mentoring team members to protect and improve development quality. Tech stack includes Nuxt 3 (Vue.js 3, TypeScript), OpenAPI codegen, TanStack Query, Zod, Storybook, Sentry, Google Analytics, GitHub Actions, AWS hosting (S3, CloudFront, Route53), and collaboration tools (GitHub, Copilot, VS Code, Confluence, Miro, JIRA, Slack, Zoom, Office 365). Preference for experience launching frontend products, performance monitoring/optimization, server-side RESTful APIs, Domain Driven Design, multicultural environments, and stakeholder management; Japanese or English business proficiency.