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Updated 2025-07-07
Activated 2025-05-22

【Generative AI Engineer】

This posting is managed by: Talentus K.K.
Company Name Company is not publicly visible
Job Type IT (PC, Web, Unix) - Fullstack Engineer
IT (PC, Web, Unix) - Front-End Engineer
IT (PC, Web, Unix) - Back-End Engineer
Industry Software Vendor
Location Asia Japan Tokyo Shinjuku

Job Description Monolingual English OR Monolingual Japanese OR Bilingual: All are acceptable

【Job Description】
You will lead the development of generative AI technologies.

Beyond GPT-based prompt engineering, you will assess what is possible and impossible in areas such as image and voice recognition, as well as general AI (NN and Classifier), and handle the actual implementation.

※ Lead the development of generative AI technologies
※ Manage the overall progress of projects and lead the team to advance the development of generative AI technologies
※ Conduct research and model construction
- Investigate the latest research papers and design new models and structural transformations based on existing AI models
※ Development implementation and acceleration
- Implement developed models and apply acceleration techniques to optimize performance
※ Solution delivery
- Provide AI solutions tailored to customer needs and apply them to real business challenges
※ Result verification and improvement
- Verify results using actual customer data and real environments, and improve models
※ Research and evaluation of new technologies
Conduct research and evaluation of new AI technologies and promote their introduction as needed

【Why We’re Hiring】
Our product leverages generative AI technology to enhance operational efficiency, with the design, implementation, and evaluation of AI models forming its foundation.

We are seeking an engineer who can optimize these processes and technically support the growth of our product. The role requires the ability to swiftly conduct end-to-end processes from research paper investigation to model construction (including structural transformation of existing models), development implementation, and solution delivery.

You are expected to incorporate the latest research findings and drive technology development that leads the industry.

【Why You’ll Love This Role】
※ Opportunity to engage with cutting-edge technology:
- Gain practical experience in the rapidly growing field of large language models and AI agents, significantly enhancing technical skills.
- Discretion and speed:
Benefit from the rapid decision-making process unique to startups, enjoying flexibility in the adoption of new technologies, creating an environment where individual ideas can be quickly realized.
※ Diverse and multicultural team:
- Work with an internationally diverse engineering team, deepening cross-cultural understanding and fostering a global perspective. Positions not requiring Japanese language skills are also available.
※ Impactful work:
- Play a crucial role in shaping the future of AI-driven products, directly contributing to the success of clients and industries, experiencing the impact on society.
※ Professional growth:
- Contribute to technical strategy, demonstrate leadership, and grow with a highly skilled team, preparing for the next step in your career.
Company Info Approximately 65 members are part of the development organization. Development is divided into the following groups:

Client Solution Development
In-house AI SaaS Development
Common Infrastructure Development (Infra / Data / AI R&D)
Working Hours 10:00～19:00
Job
Requirements		 【Required Skills】
※ Bachelor's or Master's degree in Computer Science, Software Engineering, Artificial Intelligence, Machine Learning, Mathematics, Physics, or related fields, with deep knowledge in the Generative AI domain.
※ Programming Skills
- Have advanced programming skills in Python and practical experience using deep learning frameworks such as PyTorch or TensorFlow.
※ Research Activities and Algorithm Development Experience
※ Experience in designing and implementing algorithms based on the latest research papers in fields like computer vision or natural language processing.
※ Developed original algorithms in research projects and presented at conferences or journals.
※ Experience in applying research results to actual products and achieving performance improvements.
※ Experience in Solving Technical Challenges
- Analyzed specific technical challenges in real projects and proposed and implemented concrete solutions.
※ Business-level communication skills in either English or Japanese (proficiency in one is required).

【Nice to Have】
※ Experience in developing and applying image generation models and LLMs.
※ Experience in submitting and presenting papers in fields such as computer vision and natural language processing.
※ Experience applying DL and machine learning technologies to actual products, knowledge of infrastructure construction, and web-related knowledge.
English Level Business Conversation Level (TOEIC 735-860)
Japanese Level None
Chinese Level None
Salary JPY - Japanese Yen JPY 6000K - JPY 14000K   
Other Salary
Description		 <Full-time Employees>
※ Book purchase subsidy (up to ¥30,000 per half-year)
※ Refreshment allowance (up to ¥5,000 per month)
※ Club activity allowance (up to ¥5,000 per month)
※ Housing allowance (up to ¥30,000 per month for residences near company-designated stations)
※ Shuffle lunch/dinner (once per quarter: up to ¥1,000 for lunch, ¥5,000 for dinner)
※ Support for obtaining qualifications and English language learning (only if required for work)
※ Refreshment leave (2 special paid leave days granted annually to employees with 3+ years of continuous service)
※ Annual health checkup
※ Employee stock ownership plan

[Insurance]
※ Full social insurance coverage

[Allowances]
※ Full reimbursement of transportation expenses
Holidays Complete Five-Day Workweek
Regular days off: Saturdays, Sundays, and national holidays
Leave: Paid annual leave, summer vacation (3 days), year-end and New Year holidays (December 31 to January 3), and special leave for weddings and funerals
Job Contract
Period		 Hiring fulltime
Nearest Station Shinjuku Station
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