We are hiring a Senior Data Scientist to join Masan’s central Data team, working on large\-scale data problems across retail, FMCG, supply chain, and consumer platforms.

This role is designed for candidates with a strong algorithmic foundation and experience working with large\-scale systems, who want to apply their expertise to real business problems with measurable impact.

You will work on end\-to\-end machine learning solutions, from problem framing and model development to deployment and performance monitoring. While this is a full\-stack data science role, you will collaborate closely with Data Engineers, ML Engineers, and Product teams rather than working independently on infrastructure.

**Key Responsibilities**

• Translate complex business problems into data science and machine learning solutions
• Design, build, and optimize models such as: recommendation and ranking systems; forecasting and demand prediction models; segmentation and scoring models
• Work with large\-scale datasets and distributed systems to support production use cases
• Participate in building and improving end\-to\-end ML pipelines (training, deployment, monitoring)
• Collaborate with engineering teams to ensure models are scalable, stable, and maintainable
• Analyze model performance, identify issues, and continuously improve results
• Communicate insights, trade\-offs, and technical decisions clearly to stakeholders

**Requirements**

**Must\-have**

• 4–7\+ years of experience in Data Science, Machine Learning, or related fields
• Strong foundation in algorithms, data structures, and applied statistics
• Proven experience working with large\-scale systems or high\-volume data
• Hands\-on experience building and deploying production ML models
• Strong Python skills and experience with ML frameworks (e.g. PyTorch, TensorFlow, Scikit\-learn)
• Experience working with distributed data processing (Spark, PySpark, or similar)
• Ability to work effectively with engineers and product teams in complex systems
• Strong problem\-solving mindset and ability to reason from first principles
• Comfortable working with ambiguity and evolving requirements
• Able to balance technical excellence with business impact
• Ownership mindset with strong collaboration skills

**Preferred**

• Experience building recommendation systems, ranking, or personalization models
• Background from big tech, platform companies, or large\-scale digital products
• Familiarity with ML deployment tools (MLflow, Docker, FastAPI, CI/CD pipelines)
• Experience with cloud platforms (Azure, AWS, or GCP)

*Key note: We understand that senior candidates often consider timing carefully. Start dates are flexible, and we are open to discussing transition plans.*