Frontend Engineer React or Remix

Appealing Points:

• Frontend Technical Leadership Opportunity – Lead frontend development initiatives, drive technical improvements, and provide expertise across the development organization using modern React-based technologies.
• Modern Technology Stack & Architecture – Work with React, Remix, TypeScript, Cloudflare, AWS, and modern testing and UI frameworks to build scalable and user-focused applications.
• Collaborative Product Development Environment – Partner closely with designers, PMs, and engineers to enhance user experiences, optimize shared UI components, and contribute to product innovation.

Annual Salary : 5 million and above

Job Responsibilities:

• Frontend development using React / Remix
• Provide frontend technical support across the development organization
• Read and understand existing application code and specifications
• Modify and improve the existing environment as needed
• Design and optimize shared UI components in collaboration with designers
• Promote technical infrastructure improvements and developer experience initiatives

Job Qualifications:

• Experience in designing, developing, and operating web applications
• 5+ years of frontend development experience using React
• Continuous development experience including testing (integration / E2E, etc.)
• Experience in team-based development (code reviews, etc.)
• Experience collaborating with other roles such as PMs and designers
• Ability to proactively contribute to product and service improvements
• Strong team-oriented mindset and collaborative communication skills
• Ability to develop with a focus not only on technology but also on user value
• Technical Environment:
  • Languages / Frameworks: React / Remix (SPA architecture), TypeScript, etc.
  • Runtime: Bun
  • UI Library: shadcn/ui
  • Testing / Linter: RTL / MSW / Biome
  • Hosting / Execution Environment: Cloudflare / AWS, etc.
  • API Management: OpenAPI, etc.
  • Tools: Figma / Notion / Slack / Miro / FigJam

Preferred Qualifications:

• Backend development experience (language agnostic)
• Experience migrating or improving legacy environments into modern architectures
• Experience creating design documentation and selecting technologies
• Experience designing UI components and establishing design guidelines
• Knowledge of API design and schema management
• Experience contributing to OSS or sharing technical knowledge publicly

Languages : Conversational level Japanese and Conversational level English.

Company Description:

Startups are always "The next wall" We continue to take on this challenge:
gathering team members, shaping products, expanding the organization, and gaining recognition from society.
Along the way, we face obstacles such as a lack of resources and a barrier of experience.
That's why we wants to be a partner in overcoming those "walls"
together. We combine talent, development, PR, and community
to create an environment where challenges never cease.
To enable startups to unleash their full potential and continue to make a positive impact on society.