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Updated 2025-09-19
Activated 2025-09-19

Research Scientist

This posting is managed by: 4M Career KK
Company Name Company is not publicly visible
Job Type
4M Career KK
Electronics (Appliance/Semiconductor) - Basic Research and Development
IT (Other) - Machine Learning/AI Engineer
IT (Other) - Data Analyst/Data Scientist
Industry Telecommunications/Information Services
Location Asia Japan Tokyo

Job Description Position Details
- Define short/middle-term direction of projects while aligning with business, product and engineering team
- Design algorithms to solve defined research problems. Also, appropriately implement the designed algorithms and evaluate their performance
- Work with Project Management team to gather business requirements, define suitable KPIs and validate if the solutions meets/exceeds the requirements/KPIs
- Support engineering teams and product teams to adapt prototypes in production
- Support junior-level research scientists
- Contribute to the advancement of science via writing papers, attending conferences, submitting patent proposals and verifying the feasibility in the business applications

Mandatory Qualifications:
- Ph.D. in Computer Science or a related field, or equivalent practical experience
- Ability to effectively communicate with research scientists, engineers, and business personnel in English
- Ability to work independently and drive projects forward
- Proficiency to analyze data and build ML/AI model using Python
- Basic understanding of statistics, machine learning and deep learning with some practical experience
- Development experience in a Unix/Linux environment
- Proficient in code management (e.g., Git)
- Interest and curiosity about user behaviour and credit scoring
Company Info Join a global tech-driven powerhouse headquartered in Tokyo, with over 70 services spanning e-commerce, fintech, mobile, and digital content. Operating in 30+ countries and serving 2 billion users, foster an entrepreneurial culture built on innovation, diversity, and speed.
With English as our official language and a team from 100+ nationalities, we value open communication and global collaboration. From powering Japan’s largest online marketplace to pioneering cloud-native telecom networks, we’re creating an ecosystem where ideas scale and people thrive.
If you're passionate about building impactful products and shaping the future of digital services, this is your place to grow.
English Level Fluent (TOEIC 865-)
Japanese Level Daily Conversation Level
Salary JPY - Japanese Yen JPY 7000K - JPY 10000K   
Other Salary
Description		 Social Insurance
Commuting/ Transportation Allowance
Relaxation Facilities
Holidays Five-Day Workweek
Summer Holidays
Winter Holidays
Refresh Holidays
Sick Leave
Paid Holidays
Paid Holidays
Child-care Leave
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