LLM Engineer (Sales AI Agent)

Exawizards Minato-ku, Tokyo April 29 2026
  • 💴 ¥6.5M ~ ¥10.1M annually
  • 🏡
    Partially remote
  • 🗾 Japan residents only
  • 💬
    Business Japanese
    No English required
  • 🧪
    Intermediate level
    2+ 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

You will work on LLM-centered products in the sales domain and lead the design and development of LLM-based features.

Tech Stack

  • Python, Kotlin, TypeScript
  • AWS, Docker, Datadog

Responsibilities

  • Identify technical challenges and user value based on real user problems
  • Define technical approaches, including:
    • Model selection
    • Prompt design strategy
    • RAG and tool usage strategies
    • Evaluation metrics and criteria
  • Conduct local experiments to validate and compare technical approaches
  • Implement features in production when necessary
  • Design evaluation processes, guardrails, continuous improvement mechanisms, and logging systems to address the inherent uncertainty of LLMs
  • Build and improve monitoring and operational frameworks to ensure quality
  • Stay up to date with AI agent technologies and the latest research papers, and share insights with the team

Requirements

  • 2+ years of experience developing products as a software engineer
  • Experience developing LLM applications (professional or personal)
  • Strong interest in machine learning and LLMs
  • Hands-on mindset when learning new technologies
  • Business-level Japanese reading and writing ability (equivalent to JLPT N1)

Nice to haves

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

  • Experience with cloud infrastructure
  • Experience developing or researching speech-related technologies such as speech recognition

Compensation

¥6,480,000 ~ ¥10,080,000 annually.

Hiring Process

  1. 1

    CV Screening

  2. 2

    Coding Test

  3. 3

    First Interview

  4. 4

    Second Interview

  5. 5

    Final Interview

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

Meet Exawizards's Developers

Hsiang-Hao Yu describes how his small team developed ExaWizards’s enterprise AI product, and what kind of developers he wants to work with now.

Read their story...

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