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About the Role

The Data Scientist serves as a senior analyst and project leader, responsible for delivering advanced analytical solutions, shaping analytical approaches, raising quality standards, and translating complex analyses into actionable business decisions across the organization. This role reports to the Advanced Analytics Manager.

Responsibilities

Act as a senior analytical partner to internal stakeholders, developing a deep understanding of business strategies, market context, constraints, and decision-making processes.
Identify high-impact business opportunities and challenges, translating them into clearly defined problem statements, analytical approaches, and success metrics.
Communicate insights, assumptions, risks, limitations, and recommendations clearly to business stakeholders to support informed decision-making and drive action.
Collaborate closely with cross-functional teams, including business, technology, and data engineering, to execute data science and AI projects effectively.
Lead analytical projects end-to-end by coordinating roles, timelines, and dependencies.
Communicate progress, risks, and issues transparently to stakeholders to ensure alignment and timely decision-making.
Design, develop, and deploy advanced analytical and AI models to optimize commercial activities, marketing strategies, and business processes.
Apply advanced modeling techniques to improve customer experience, revenue growth, targeting effectiveness, and other strategic objectives.
Establish and govern A/B testing and experimentation frameworks, ensuring statistical validity, interpretability, and compliance with internal standards.
Evaluate the quality, effectiveness, and limitations of data sources and data collection methods.
Deliver projects in line with defined internal processes and approval flows.
Partner with technology and data engineering teams to operationalize models and embed analytics into business workflows.
Continuously monitor model performance post-deployment and drive optimization to improve accuracy, effectiveness, and business impact.

Requirements

3+ years of experience in a business-related data science and/or advanced analytics role
Proven experience in leading cross-functional projects
Proven track record of driving and delivering data science and AI projects in a business context by leveraging predictive analytics technologies, artificial intelligence (AI) and machine learning techniques, data mining, and text mining
Demonstrated ability to drive tangible business outcomes through data-driven insights
Strong expertise in a wide range of data mining and data analysis methods, including model development and deployment, algorithm development, and simulation design and execution
Practical working knowledge of machine learning techniques such as regression, decision trees, probabilistic networks, association rules, clustering, neural networks, and Bayesian models
Skills in text mining and data visualization
Clear understanding of data analysis workflows and statistical methods, including hypothesis testing and probability modeling
Strong project management skills
Strong communication skills, including the ability to explain complex concepts clearly
Fluency in both English and Japanese

Skills

Data Science
Advanced Analytics
Predictive analytics
Artificial intelligence (AI)
Machine learning
Data mining
Text mining
Data visualization
R
Python
SAS
SQL
Relational database structures
Project management
Communication

Location

Chiyoda, Tokyo, Japan

Work Type

Permanent

Experience Level

3+ years of experience

Education Level

MSc or BSc in Computer Science with knowledge of Statistics, Machine Learning & Artificial Intelligence, Physics, Mathematics, Bioinformatics, Computational Informatics, Medical Informatics, Computational Biology or related disciplines.
PhD, MSc, or BSc in a STEM subject with equivalent knowledge is a plus.

About the Company

At Johnson & Johnson, we believe health is everything. Our strength in healthcare innovation empowers us to build a world where complex diseases are prevented, treated, and cured, where treatments are smarter and less invasive, and solutions are personal. Through our expertise in Innovative Medicine and MedTech, we are uniquely positioned to innovate across the full spectrum of healthcare solutions today to deliver the breakthroughs of tomorrow, and profoundly impact health for humanity. Learn more at jnj.com.
As guided by Our Credo, Johnson & Johnson is responsible to our employees who work with us throughout the world. We provide an inclusive work environment where each person is considered as an individual. At Johnson & Johnson, we respect the diversity and dignity of our employees and recognize their merit.
Fueled by innovation at the intersection of biology and technology, we’re developing the next generation of smarter, less invasive, more personalized treatments. Your unique talents will help patients on their journey to wellness. Learn more at https://www.jnj.com/medtech