PayPal · 9 hours ago
Sr Data Scientist, Personalization
New York, NY
Full-time
Hybrid
Mid, Senior Level
$124K/yr - $213K/yr
3+ years expPayPal has been revolutionizing commerce globally for more than 25 years, creating innovative experiences for consumers and businesses. As a Senior Data Scientist on the Personalization Platform team, you'll design and develop machine learning models to enhance PayPal's personalization and recommendation systems, collaborating closely with ML Engineers and product partners to drive measurable improvements in customer experiences.
E-Commerce PlatformsFinTechMobile PaymentsTransaction Processing
Responsibilities
Lead the development and implementation of advanced data science models
Collaborate with stakeholders to understand requirements
Drive best practices in data science
Ensure data quality and integrity in all processes
Mentor and guide junior data scientists
Stay updated with the latest trends in data science
Contribute to the design and development of personalization and recommendation models, leveraging advances in ranking, retrieval, reinforcement learning, and generative/agentic AI
Perform in-depth exploratory data analysis to identify new features, signals, and modeling opportunities that improve personalization outcomes
Develop, prototype, and validate machine learning models with a strong focus on scientific rigor, statistical soundness, and measurable business impact
Partner with product managers and engineering teams to operationalize models, define success metrics, and track experiment results
Build and support robust experimentation frameworks, ensuring reliable evaluation of model performance through A/B tests and causal inference methods
Communicate findings, insights, and technical recommendations to cross-functional stakeholders with clarity and influence
Contribute to a culture of scientific excellence, staying current on developments in recommendation systems, ranking algorithms, and personalization techniques
Qualification
Required
3+ years relevant experience and a Bachelor's degree OR Any equivalent combination of education and experience
Lead the development and implementation of advanced data science models
Collaborate with stakeholders to understand requirements
Drive best practices in data science
Ensure data quality and integrity in all processes
Mentor and guide junior data scientists
Stay updated with the latest trends in data science
Preferred
4–7 years of experience in applied machine learning or data science, with hands-on experience building models for personalization, recommendations, ranking, or related areas
Advanced degree (Master's required; PhD a plus) in Computer Science, Statistics, Mathematics, or a related quantitative field
Strong grounding in machine learning algorithms, statistical modeling, and experimentation methodologies
Proficiency with Python and core ML libraries (e.g., NumPy, Pandas, Scikit-learn, TensorFlow/PyTorch)
Solid experience analyzing large datasets and writing performant SQL
Strong communication skills with the ability to explain complex concepts to technical and non-technical audiences
Demonstrated ability to drive meaningful model improvements through data-driven analysis and experimentation
Experience with large-scale personalization or recommendation systems in production environments
Knowledge of retrieval systems, learning-to-rank, uplift modeling, reinforcement learning, or contextual bandit approaches
Familiarity with cloud ML environments (e.g., GCP, Vertex AI) and feature store concepts
Experience with model monitoring, experimentation platforms, or observability tools (e.g., Datadog)
Publication record in ML, RecSys, IR, or related fields is a plus
Benefits
Flexible work environment
Employee shares options
Health and life insurance
Company
PayPal
PayPal is a financial service company that provides online payment solutions to its users worldwide.
10001+ employees
H1B Sponsorship
PayPal has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (1144)
2024 (917)
2023 (775)
2022 (921)
2021 (1051)
2020 (1049)
Funding
Current Stage
Public CompanyTotal Funding
$12.17BKey Investors
Kohlberg Kravis RobertsBlueRun Ventures
2025-11-17Post Ipo Debt· $6.95B
2023-06-07Post Ipo Debt· $5B
2015-07-20IPO
Leadership Team
Simon Bladon
PayPal UK CEO
chaloem khompitoon
President & CEO
Recent News
2026-01-14
2026-01-13
The Real Deal
2026-01-13
Company data provided by crunchbase