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Backend 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

Backend Engineer - Sales Marker

Not Completed25mEnglish
Keywords:
Backend EngineeringWeb DevelopmentIn-house Product Development

Work Conditions

  • Employment Type: Full-Time
  • Location: Remote-friendly & fully flexible work schedules (Japan-based, global team with English speaking environment)
  • Compensation: Not explicitly stated; likely competitive for rapidly growing SaaS startup (not specified in source)

1. Backend Engineer

Responsibilities & Goals

  • Contribute significantly to backend development across multiple product zones.
  • Thrive in a startup environment, taking ownership and driving meaningful impact.
  • Collaborate within a diverse global engineering and product team.

Requirements

Must-Have

  • Deep understanding of data structures, algorithms, and fundamental computer science concepts.
  • 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 an in-house product.
  • Daily conversational level of English or Japanese (either is acceptable).

Nice-to-Have

  • Experience with Next.js.
  • Experience with Node.js and Express.
  • Business level proficiency in Japanese is a plus.

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; Others: AWS Lambda, AWS Batch, API Gateway, AWS Glue

Why Us?

  • One of the fastest-growing SaaS startups in Japan with strong financial growth.
  • Opportunity to develop highly innovative new products from scratch.
  • Plenty of leadership and career development opportunities.
  • Fully remote-friendly and flexible work schedules.
  • Global team and English-speaking environment.
  • Attractive benefits & perks: Resort Works, book-purchasing allowance, free weekly lunch, offsites, and more.

Working Style

  • Remote Work: Fully remote-friendly; use Zoom, Meet, and virtual office Gather to maintain quality and quantity of communication.
  • Flexible Work: Customize your daily working hours; manage your schedule and tasks within reasonable limits, meeting a monthly requirement of 8 hours per working day.
  • Work-Life Balance: Emphasis on healthy work–life balance—whether you lean into work or prioritize personal time, both approaches are supported.