This position is closed and is no longer accepting applications.

Fullstack Engineer

Pafin Chiyoda-ku, Tokyo
  • 💴 ¥7M ~ annually
  • 🏡 Partially remote
  • 🧪 3+ years experience required
  • 💬 No Japanese required
  • 🌏 Apply from abroad
  • 🧳 Relocate to Japan

About Pafin

Pafin Chiyoda-ku, Tokyo

Pafin provides an investment management platform for individual investors in Japan, known as Cryptact Grid. The first service launched on Grid is Japan’s largest service for profit/loss calculation and tax assistance in cryptocurrencies.

Key benefits

  • Flextime
  • Free Japanese lessons
  • Technical Cofounders

About the position

Join our dynamic team at pafin and be a key player in the future of web3 and individual investment. Our product Cryptact is a leading provider of cryptocurrency P&L calculation in Japan, and we’re at the forefront of the rapidly expanding DeFi and NFT space. With the rise of web3 technology, we’re enabling individuals to take charge of their financial futures like never before. We’re looking for a talented fullstack engineer to join our mission and help drive our success.


  • 3+ years of professional experience using JavaScript or TypeScript
  • Experience in Node.js/React
  • Have a strong team mentality with discipline towards reviews, cooperation and knowledge sharing

Nice to haves

While not specifically required, tell us if you have any of the following.

  • Ability to design, implement, and optimize a process and/or workflow to deal with large scale data and high throughput services in a micro service environment.
  • Interest in TypeScript if the candidate hasn’t worked with it.
  • Fluency in RDB such as PostgreSql and NoSql such as Redis
  • Experience in mobile application development for Android and/or iOS
  • Experience in recent development tools such as Docker, GitHub, CircleCI
  • Experience in AWS
  • Knowledge and experience of financial investments.


Starting from 7 million JPY annually. Stock option are also available.

Hiring Process

  1. 1

    First interview

    We’ll check what is written on resume, and are looking for a basic cultural fit. Conducted online.

  2. 2

    Second interview

    We’ll go in depth into tech.

  3. 3

    Final discussion

    You’ll speak with a tech director and the CEO.

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