This position is closed and is no longer accepting applications.

Data Scientist


Minato-ku, Tokyo
    💴 ¥6M ~ annually
    🏡 No remote
    🧪 Minimum years of experience unspecified
    💬 No Japanese required
    🌏 Apply from abroad
    🧳 Relocate to Japan

About CTW

CTW Minato-ku, Tokyo

We are Japan’s No. 1 IP game platform company, specializing in creating and distributing browser games. Join us and become part of a passionate tech team working on building cutting-edge technologies in the gaming industry.

Key benefits

  • Creative freedom for developers
  • Feel your contribution
  • We rely on motivation 3.0

About the position

As a Data Scientist, you will be responsible for the application of machine learning, statistical analysis and data visualization technologies based on our G123 platform big data. Combined with business innovation, you will explore and develop a data-based digital intelligence road.


  • Innovating solutions in advertising or game industry operation scenarios
  • Implementing data-driven business practices by building digital products and tools
  • Collaborating closely with the company’s internal stakeholders to identify and analyze problems / opportunities
  • Designing, evaluating, and validating improvements to the G123 platform products
  • Performing quantitative and qualitative modeling of business dynamics, user behavior, etc.


  • Experience in statistical analysis, machine learning, natural language processing (NLP), recommender systems, automation, and other related fields
  • Excellent business modeling and data mining, processing and analysis skills
  • Proficiency in Python and popular data visualization tools
  • Experience with practical deployment of machine learning engineering projects
  • Able to translate business problems into models to form systematic solutions
  • Able to implement practices to drive business growth and innovation
  • Good communication and teamwork skills

Nice to haves

These aren’t required, but be sure to mention them in your application if you have them.

  • Experience in internet, gaming, e-commerce or advertising
  • Experience in large scale data processing, recommender systems, AB test optimization, etc
  • A medal in a machine learning competition


Your compensation will be determined based on your experience as well as the whole interview process. Our salary range is as follows:

  • Level 1: 6-9M JPY
  • Level 2: 8-12M JPY
  • Level 3: 10-33M JPY

The first level is for individual contributors (junior positions), while the last level is for senior and management positions.

Hiring Process

  1. 1

    Web test

    You'll take an online test via HackerRank. If we think you're an exceptional match, we may skip this step.

  2. 2

    HR interview

    This is a friendly conversation with one of our recruiters where we're checking that your general vibe matches, and answer any questions you might have.

  3. 3

    Technical screening

    The technical screening typically is two rounds of interviews, followed by an interview with the CTO.

  4. 4

    HRD Interview

    The final interview while be conducted with our Head of HR. You can ask questions, negotiate the salary and talk about the next steps.

  5. 5


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