Career Opportunity for a Data Scientist in Japan!

■ Job Title

Data Scientist

■ Company Overview

 A leading Japanese e-commerce and internet services company, founded in 1997, operates one of the country’s largest online marketplaces, connecting millions of merchants and consumers. Beyond online retail, it has expanded into diverse sectors including fintech, digital content, telecommunications, and professional sports. Its ecosystem integrates shopping, payments, banking, credit cards, mobile services, and loyalty programs through a shared rewards system, creating a seamless experience across its platforms. Headquartered in Tokyo, the company has also grown globally, offering services in multiple regions and investing in innovation, AI, and cloud technologies to strengthen its digital infrastructure.  

■ Your Role and Responsibilities 

● Serve as lead data strategist to identify and integrate new datasets that can  be leveraged through our product capabilities, and work closely with the engineering team in the development of data products.
● Execute analytical experiments to help solve problems across various  domains and industries.
● Identify relevant data sources and sets to mine for client business needs, and work with large structured and unstructured datasets and variables.
● Devise and utilize algorithms and models to mine big-data stores; perform data and error analysis to improve models; clean and validate data for uniformity and accuracy.
● Analyze data for trends and patterns, and interpret data with clear objectives in mind.
● Implement analytical models in production by collaborating with product managers, software developers and machine-learning engineers.

■ Experience and Qualifications

● Marketing/Ad Industry Knowledge and Experience
● Minimum 5 years of professional experience as a Data Scientist.
● Preferably with experience in creating machine learning solutions specifically for marketing and advertising domains.
● Broad knowledge and experience with a wide range of machine learning models. Deep expertise in areas such as reinforcement learning, large language models (LLM), natural language processing (NLP), and computer vision is highly preferred.
● Experience in implementing Generative AI (GenAI) products is a significant plus.
● Master’s degree or higher in Data Science, Machine Learning, AI, Mathematics, Statistics, Physics, or related fields. (PhD is a great plus) 

■ Additional Preferred Qualifications

 ● Proficiency in data mining, mathematics, and statistical analysis.
● Advanced experience in pattern recognition and predictive modeling. Solution research and product implementation of LLM and/or computer vision technology is a plus.
● Advanced skill in Python and SQL
● Ability to write clean, maintainable code and demonstrate mature working habits and professional attitude.
● Experience deploying data science solutions in production environments is preferred. Advanced engineering skills are a plus.
● Ability to work effectively in a dynamic, agile, product-oriented group managing multiple concurrent projects

■ Work Location

Tokyo (Hybrid)

 

■ Salary 

To be decided based on your experience, skill set, and company policies.
Details will be shared during the interview process.

Language
● Fluent English communication skills (both written and spoken) are required as the team operates in English.
● Japanese language skills are not required but are considered a great plus. If you are passionate about leveraging AI to transform marketing and advertising, and meet the above qualifications, we encourage you to apply and join our innovative international team

Details will be provided during the meeting.