This position is closed and is no longer accepting applications.

Senior AI Software Engineer (New project)

Autify Chuo-ku, Tokyo
  • 💴 ¥8M ~ ¥10M annually
  • 🏡 Fully remote (from Japan)
  • 🧪 2+ years experience required
  • 💬 No Japanese required
  • 🌏 Apply from abroad
  • 🧳 Relocate to Japan

About Autify

Autify Chuo-ku, Tokyo

A test automation platform founded in San Francisco by a team of engineers who were the first Japanese team to graduate from the top US accelerator Alchemist Accelerator. Over 300 companies have implemented our platform.

Key benefits

  • Engineering-centric culture
  • Remote-first
  • Internationally minded engineers

About the position

To expand our product lineup, we are looking for a senior machine learning engineer who mainly focuses on prompt engineering to join our team that works for new services.

You will mainly be responsible for developing a new product utilizing machine learning techniques and generative AI from a proof of concept into a releasable product.


  • Create effective prompts to maximize the quality of the output from LLMs based on the product specifications
  • Create PoC Web/CLI applications that use LLMs or ML under the hood to validate the feasibility of ideas
  • Build our machine learning models using data relevant to the software testing if needed
  • Work with other engineers, designers, and product leads to implement various features while considering performance, security, and reliability
  • Proactively identify functions that can be improved, and suggest possible solutions in the technical aspects and product-related ideas
  • Participate in on-call rotations for incident & alert handling


  • 2+ years of technical experience with Python and developing APIs with FastAPI and web applications
  • Over a year of experience in prompting open-source and closed-source LLMs
  • Has good comprehension and familiarity with CSS and HTML
  • Up to date with the latest Machine Learning Research especially on LLMs and Prompt Engineering
  • Experience in building metrics for evaluating various tasks LLMs.
  • Until a Visa can be issued, being able to work from your own country with some overlap with Japanese business hours.

Nice to haves

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

  • Over two years of experience in training and customizing deep learning models, especially LLMs
  • Knowledge of natural language processing and visual recognition
  • Proficient in the process of analyzing, hypothesizing, and testing
  • Experience in MLOps
  • Modern development experience with Agile or Scrum
  • Experience in E2E test automation with test automation frameworks like Playwright, Cypress, Selenium, Appium, and etc.


8 to 10 million JPY annually.

Hiring Process

  1. 1

    Coding test


  2. 2

    Technical assignment


  3. 3

    Technical interview & HR interview

    90 minutes

  4. 4

    Final interview

    60 minutes

Meet Autify's Developers

Samuel Johnson shares his experiences of working at Autify, where he does a mix of SRE and backend engineering. He explains how their product and working environment make it an attractive opportunity.

Read his story...

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