データサイエンティスト/ Data Scientist
A renowned technology company is seeking a Data Scientist. The successful candidate will lead data science projects, analyse complex datasets, develop visualisations, improve data systems, and communicate actionable insights to stakeholders. This is a long-term contract role.
Responsibilities:
- Develop, implement, and optimise statistical models and machine learning algorithms
- Analyse complex datasets to identify trends and generate business insights
- Lead data science projects from conception through to deployment
- Collaborate with product, engineering, marketing, IT, and data engineering teams to integrate solutions into business processes
- Provide technical guidance and mentorship to junior data scientists and analysts
- Develop dashboards and reports to communicate findings and recommendations
- Research emerging data science methodologies and technologies
- Present research findings and represent the organisation at conferences and seminars
- Oversee data systems and databases to maintain data integrity, efficiency, and security
- Improve data collection, storage, and retrieval processes
- Communicate complex findings clearly to technical and non-technical stakeholders
- Engage stakeholders to understand business needs and deliver data-driven solutions
- Provide regular updates on project progress and outcomes
Requirements:
- Master’s degree or above in Physics, Mathematics, or a related field
- More than 5 years of experience in data science within the marketing or advertising industry
- Demonstrated experience leading data science projects with measurable business impact
- Expertise in model development, tuning, and applying data science to business scenarios
- Proficiency in Python, SQL, and Hive
- Strong applied statistical knowledge, including statistical tests, distributions, regression analysis, and maximum likelihood estimation
- Advanced knowledge of machine learning methods, including k-Nearest Neighbours, Naive Bayes, Support Vector Machines, and Decision Forests
- Strong understanding of multivariable calculus and linear algebra
- Proficiency in data wrangling and handling imperfect datasets
- Experience with data visualisation tools such as Tableau, matplotlib, ggplot, and d3.js
- Business level English (TOEIC 800+)
Preferred requirements:
- PhD in Physics, Mathematics, or a related field
- Experience with machine learning libraries such as Scikit-learn, TensorFlow, or PyTorch
- Familiarity with DBT, Airflow, Docker, and Kubernetes
- Strong background in software engineering
- Proficient in Japanese
About the Company:
A leading Japanese technology company operating across e-commerce, fintech, digital content and communications. The company develops a wide range of digital services and platforms that connect consumers and businesses in Japan and international markets.
Keywords:
データサイエンティスト, データ分析, 機械学習, 統計モデリング, Python, SQL, データ可視化, マーケティング分析, 広告分析, データエンジニアリング, 求人, 外資系
Job Ref: N9H49H
About the job
Contract Type: Contract / Haken
Specialism: Information Technology
Focus: Data Analysis
Industry: New Media and Internet
Salary: Negotiable based on experience
Workplace Type: On-site
Experience Level: Associate
Language: English - Business level
Second Language: Japanese - Professional working
Location: Tokyo
TEMPORARYJob Reference: N9H49H-BF6D989B
Date posted: 16 October 2026
Consultant: Yulia Urutina
kanto information-technology/data-analysis 2026-10-16 2026-11-15 new-media-and-internet Tokyo JP Robert Walters https://www.robertwalters.co.jp https://www.robertwalters.co.jp/content/dam/robert-walters/global/images/logos/web-logos/square-logo.png true