Search Data Scientist

Job Type
7,000,000 JPY - 10,000,000 JPY per year
Japanese Level
English Level
Advanced (TOEIC 860)
Start Date


Over a billion of our users interact with our interfaces, where the growing number of UI elements (search results, recommendations, advertisements, etc.) is controlled by computer control systems that continuously optimize them to better serve the users and shareholders.

These intelligent data processing systems convert the daily terabytes of user behavior data into KPI-optimizing control signals.

To build the hearts and brains of such systems, we need engineers and researchers who are ready to design and apply a mix of machine learning and statistics techniques on a large distributed scale.


In this position, you will focus your statistical/machine learning algorithm design skills on improving search results while working closely with software engineering members. Your designs will have to embed the business values the systems are expected to abide.


【Main Responsibilities】

‐ Demonstrably increase business value of ecommerce search by designing and improving feedback loop algorithms

‐ As a data scientist, cooperate with developers and business staff

‐ Design highly available systems while cooperating with operation staff


【会社概要 | Company Details】

Our client is a large global Internet service company that has enjoyed sustained growth as they continue to expand their business in various new areas and industries. This is a great opportunity to work in a diverse and international environment in Japan. Our client actively strives to be an equal opportunity employer, and they have many female and foreign nationals in upper management positions. Their brand has also gained global recognition as they sponsor some of the world's most famous sports teams. Our client prides themselves in providing a comfortable working environment for their employees. Engineers are welcome to choose their own setup (Windows/Mac, etc.); whatever makes them comfortable! Free meals are also provided at the company cafeteria. Their chefs work to create exciting new menus and dishes, so employees never get tired of the food!
【就業時間 | Working Hours】
9:00 - 17:30(Mon - Fri)
【休日休暇 | Holidays】
Saturday, Sunday, and National Holidays, Year-end and New Year Holidays, Paid Holidays, Other Special Holidays
【待遇・福利厚生 | Services / Benefits】
Social insurance, Transportation Fee

Required Skills

‐ Deep understanding of mathematics and its application to business

‐ Strong software development ability in Java, Python or other general purpose language(s)

‐ Excellent communication skills

Preferred Skills

‐ PhD. or equivalent practical experience in Statistics, Machine Learning, Applied Mathematics, Physics, Control Theory, Computer Science or other quantitative science

‐ Actionable data analysis experience, preferably in ecommerce

‐ Experience working with very large data sets

‐ Experience in machine learning and/or statistics

‐ Experience with distributed systems

‐ Working knowledge of NoSQL storage technologies and Hadoop ecosystem