Login or register to see your saved jobs and receive scout emails
Login or register to find a job
Job ID : 1543070 Date Updated : May 29th, 2025
Listed Company/International Environment

【New Business (Manga/Comics)】Image Generation AI Engineer

Hiring Company ⁑Mobile Game Provider⁑
Location Tokyo - 23 Wards
Job Type Permanent Full-time
Salary 6 million yen ~ 10 million yen

Work Style

Remote Work and WFH

Job Description

【About the Company】

The company is an independent manufacturer of "game applications for smartphones" with a passion for quality.

The company is particularly focused on beautiful 2D graphics, motion, and full voice. Representative works include the fantasy RPG "Crypt Tract of Genjyu Contract", which has now surpassed 12 million downloads, and "Mitrasphere - MITRASPHERE", which was released in the summer of 2017 and has surpassed 6 million downloads.
"Crypt Tract" is currently celebrating its 6th anniversary, and "Mitrasphere" has surpassed its 4th anniversary, making it a long-running title.

In 2022, the company released its first new large-scale RPG "Memento Mori" for the first time in five years!
The game has already surpassed 1 million downloads in its first month of release and is popular not only in Japan but also overseas, and the company aims to further expand its business in the future.

Because of in-house production, it is possible to have detailed discussions and work out complex specifications to complete a single title.

In addition, the company established Koiniwa Inc. as a subsidiary in November 2019.
Koiniwa provides the service of "Koiniwa", a game x matching application based on the concept of "I found a partner when I was playing games".
"Koiniwa" is a new service released in April 2021, and since its release, it has continued to grow steadily in terms of various KPIs such as the number of active users and sales.
An overseas version of the service is also in the works, and development of future major updates is underway.


Job Description 

As an Image Generation AI Engineer, you will be involved in the development of a new business utilizing image generation AI technology. Reporting directly to the Business Owner, you will be entrusted with a wide range of tasks, from formulating the technical strategy to implementation.

【Key Responsibilities】
・Building image generation AI systems for new business initiatives.
 - Designing and implementing image generation workflows that meet requirements.
 - Conducting technical verification for performance improvement.

【Future Responsibilities】
・Planning and executing mid- to long-term research and development strategies.
・Developing and implementing learning models utilizing substantial budgets.

In the rapidly evolving field of generative AI, you will be able to leverage cutting-edge knowledge while acquiring the skillset to apply it to actual service development.

 

【Working conditions & treatment】

10:00~19:00


・Saturday/Sunday/National Holiday
・Annual Paid Leave
・New Year Holidays
・Congratulations & Condolence Leave
・Refresh Leave
・Summer Holiday
・Others


・Full Social Insurance
・Commuting Allowance
・Medical Checkup
・Free Drinks/Snacks

General Requirements

Minimum Experience Level Over 3 years
Career Level Mid Career
Minimum English Level None
Minimum Japanese Level Business Level
Minimum Education Level High-School
Visa Status No permission to work in Japan required

Required Skills

【Required】
・Experience utilizing Stable Diffusion.
・Experience building image generation workflows using Comfy UI.
・Knowledge regarding the creation and operation of LoRA.
・Experience implementing custom nodes in Comfy UI.
・Deep knowledge of the latest technologies related to generative AI and a commitment to continuous learning.

*For the above points, experience gained through personal activities is acceptable even without professional work experience.

【Preferred】
・3+ years of development experience with Python, Django, etc.
・Practical knowledge of data structures and algorithms.
・Experience creating ControlNet models.

Job Location

  • Tokyo - 23 Wards

Work Conditions

Job Type Permanent Full-time
Salary 6 million yen ~ 10 million yen
Work Hours 10:00~19:00
Holidays Saturday/Sunday/National Holiday, Annual Paid Leave, etc.
Industry Internet, Web Services

Job Category

  • IT, Web and Communication > System Architect
  • IT, Web and Communication > Software Developer
  • IT, Web and Communication > Web Developer