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Full-Stack Engineer | AI-powered B2B Sales Tech SaaS

Full-time: $27,000 - $69,000

Tokyo, Japan

Partial Remote

Conditions

Apply from anywhere
Relocation to Japan supported

Requirements

Japanese:Not Required
English:Conversational
Minimum Experience:Mid-Level or above

Required AI Interviews

Basic Interview

Not Completed15mEnglish
Keywords:
Self-introductionWork experienceSkill assessment

Full-Stack Engineer - Sales Marker

Not Completed25mEnglish
Keywords:
Full-Stack EngineeringWeb DevelopmentIn-house Product Development

Work Conditions

  • Employment Type: Full-Time
  • Location: Fully Remote (Japan-based, but global team with English-speaking environment)
  • Compensation: Competitive (to be determined based on your experience and skills)

1. Full-Stack Engineer

Responsibilities & Goals

  • Contribute to both frontend and backend development across various product zones.
  • Drive product growth by leveraging strong technical foundations in a fast-paced startup setting.
  • Roles span all experience levels—from junior to senior—with opportunities to take ownership and make meaningful impact.

Requirements

Must-Have

  • Strong fundamentals in Computer Science: data structures and algorithms.
  • At least 1 year of experience in web application development.
  • At least 1 year of experience with React.js and TypeScript.
  • At least 1 year of development experience on in-house products.
  • Daily conversational level of English or Japanese.

Nice-to-Have

  • Experience with Next.js, Node.js.
  • Proficiency in Go, Java, Kotlin, or Python.
  • OAuth implementation experience.
  • Serverless architecture experience (e.g., AWS Lambda, API Gateway).
  • API integration experience with platforms like Salesforce, HubSpot, Kintone, etc.
  • Technical sales experience for sales support tools.
  • Scratch development for API integrations.
  • Experience as a cloud server engineer.
  • Business-level Japanese proficiency.

Our Tech Stack

  • Front-end: TypeScript, React; Libraries: Storybook, Jest; Hosting: Amplify
  • Server Side / Back-End: AWS, Elastic Beanstalk; DB: Aurora, Elasticsearch; Languages: Go, TypeScript; Analysis: Athena; Framework: Express; Monitoring: DataDog; Serverless: AWS Lambda, AWS Batch, AWS API Gateway, AWS Glue

Why Us?

  • Among the fastest-growing SaaS startups in Japan—achieved over 900% YoY business growth in 2.5 years.
  • Strong financial foundations and a rapidly expanding product portfolio.
  • Mission-driven team: co-founders from NRI, Keyence, LINE, Microsoft, PwC; “Forbes 30 Under 30 Asia 2023” honorees.
  • Diverse, global engineering team—from companies like Google, Microsoft, Mercari, LINE, Yahoo, SmartNews.
  • Fully remote-friendly with flexible schedules.
  • Leadership and career growth opportunities abound.
  • Benefits include Resort Worx, book purchase allowances, free weekly lunch, offsites, and more.

Working Style

  • Remote Work: Fully remote-friendly; communication via Zoom, Meet, and the virtual office Gather platform for seamless collaboration.
  • Flexible Work: Customize your daily working hours, aligning with team and company needs; must meet a monthly requirement equivalent to 8 hours per working day.
  • Work–Life Balance: Supportive environment that values both intense work focus and personal time—both approaches are welcomed.