Senior Data Scientist optimizing end-to-end personalization systems at JioStar. Collaborating with cross-functional teams to deliver personalized user experience for millions.
Responsibilities
Analyze large-scale user behavior and content metadata to uncover actionable insights and build impactful personalization models.
Design, develop, and deploy ML models including collaborative filtering, content-based recommendations, sequence models, and retrieval-ranking pipelines.
Integrate models into production systems ensuring low-latency, high-accuracy performance at scale.
Collaborate with engineers, product managers, designers, and data scientists to define personalization goals and drive feature impact across user journeys.
Develop robust A/B test frameworks, analyze experiments, and drive iteration based on performance and user engagement.
Actively monitor model performance, detect data drift, and refine strategies to improve long-term personalization quality.
Leverage LLMs and embeddings to improve personalization for underrepresented content, new users, and diverse formats.
Present technical strategies and results to cross-functional stakeholders and leadership.
Requirements
Proven experience in data science and machine learning preferably in personalization or recommendation systems.
Strong proficiency in Python, SQL, and relevant data science libraries (Pandas, Scikit-learn, TensorFlow, PyTorch, etc.)
Expertise in building and deploying machine learning models into production systems.
Experience with big data technologies (e.g., Hadoop, Spark) and cloud platforms (e.g., AWS, Google Cloud).
Deep understanding of statistical analysis, machine learning, data mining, and predictive modeling techniques.
Should be comfortable leveraging LLMs and internals.
Strong problem-solving skills with the ability to translate business problems into data science solutions.
Excellent verbal and written communication skills, with the ability to present complex information to non-technical stakeholders.
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