Fullstack Engineer - ExaEnterpriseAI

Exawizards Minato-ku, Tokyo November 4 2026
  • 💴 ¥6M ~ ¥10.1M annually
  • 🏡
    Partially remote
  • 🗾 Japan residents only
  • 💬
    Business Japanese
    Business English
  • 🧪
    Intermediate level
    3+ years experience required
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About Exawizards

Exawizards Minato-ku, Tokyo

Exawizards is a technology company focused on addressing societal challenges through artificial intelligence. By developing AI platforms and products, we target both industry-specific problems and broader societal issues, such as those posed by an aging population.

Key benefits

  • Cutting-edge AI technologies
  • Fast-paced setting

About the position

In this position, you will develop “exaBase AI,” Japan’s No. 1 enterprise generative AI service, at Exa Enterprise AI, Inc., the ExaWizards Group company responsible for our generative AI product business.

Tech stack

  • Frontend: Next.js, TypeScript, React
  • Backend: Python (Django, FastAPI), TypeScript (Fastify)
  • AI / LLM: OpenAI API, Anthropic Claude API, Google Gemini API
  • Other: AWS, Git, Datadog, Slack, Claude Code, Amplitude, Nginx

Even if you don’t have experience with every part of our tech stack, we welcome you if you have deep expertise in your core skills.

Responsibilities

  • Design, develop, and release “exaBase AI” and our AI agent products
  • Take an active role in technology selection and architecture design
  • Raise the development quality of the entire team through code reviews
  • Drive full-stack development across backend, frontend, and cloud infrastructure
  • Contribute to launching new products from the ground up (0-to-1 phase)

Requirements

  • 3+ years of experience developing web applications
  • Experience proposing technology choices and design direction on your own initiative, and driving implementation through to release while bringing your team along
  • Basic knowledge of networking, databases, and cloud infrastructure
  • A passion for delivering high-quality products that many users continue to rely on
  • Basic knowledge of algorithms and data structures
  • Currently residing in Japan, within commuting distance of our Tokyo office
  • Experience developing products at a product-based company (not contract or outsourced development)
  • Japanese proficiency at JLPT N1 level or higher

Compensation

¥6,000,000 ~ ¥10,080,000 annually.

Hiring Process

  1. 1

    Document Screening

  2. 2

    Coding Test

  3. 3

    First Interview

    30 minutes / Tech Lead + Team Members

  4. 4

    (Non-evaluative) HR Meeting

    Online, 30 minutes (may be scheduled after the final interview)

  5. 5

    Final Interview

    60 minutes / Executive Director *Technical Manager

APPLY FOR THIS POSITION
DO YOU NEED MORE INFO?
ASK A QUESTION

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