Senior Data Scientist - Flex Pay
- Location
- San Francisco
- Work mode
- On-site
- Employment type
- Full-time
About the job
About the Role:
We are seeking a highly analytical and results-driven Data Scientist to join our buy now pay later (BNPL) sector called Flex Pay. You will play a key role in building predictive risk models, optimizing offers and pricing, and extracting insights that drive product development, risk mitigation, and customer strategy. This role requires a strong foundation in statistics, machine learning, and programming.
While this position is ideally based in our San Francisco office on a hybrid basis, we are also open to considering remote candidates.
What You’ll Do :
- Build and maintain credit and fraud policy simulators used to ensure properly functioning systems and identify risk decisioning enhancements.
- Build and deploy statistical models and machine learning algorithms to solve business problems in areas like credit risk, fraud detection, pricing, customer segmentation, and marketing attribution.
- Validate models to identify factors that may affect model performance.
- Analyze large, structured and unstructured datasets using SQL, Python or similar tools.
- Stay up to date with the latest trends and technologies in data science and fintech, actively research new tools and techniques available for model development.
- Collaborate with cross-functional teams including risk, marketing, product, and engineering to define data-driven strategies.
What We Look For :
- Advanced Degree (MS/PhD) in Data Science, Statistics, Mathematics, Computer Science, Finance, or a related quantitative discipline.
- 3-5+ years of hands-on experience in a data science or analytics role, preferably in financial services.
- Experience and/or strong interest in machine learning techniques (Random Forest, Gradient Boosted Trees, etc.) strongly preferred.
- Strong proficiency in Python (Pandas, Numpy, Scikit-learn) and SQL.
- Ability to write documentation and present analysis to people with different levels of expertise (e.g., technical staff, business leads, etc.).
- Proactive, driven, and ability to work in a fast paced environment.
Nice to Have :
- Experience with data visualization tools (e.g., Tableau, Power BI).
- Experience with AI tools such as Claude
- Experience with data technologies like PySpark.
- Understanding of financial services concepts such as credit scoring, portfolio risk, or customer lifetime value.
What We Offer You :
- Competitive salary and stock option plan
- Paid coverage of medical, dental and vision insurance
- Competitive 401(k) and RRSP program
- Flexible PTO
- Opportunities for professional growth and development
- Paid parental leave
- Health & wellness initiatives
The compensation range of this position in San Francisco, CA is USD $100,000-$150,000 annually plus equity and benefits. Within this range, an individual's base pay will be dependent on a variety of factors, including without limitation, job-related knowledge, skills, education, and experience.
From Upgrade's careers page (Greenhouse), checked 29 Oct 2026.
How to apply
- Select Apply on upgrade.com. It opens Upgrade's own application form in a new tab, run on Greenhouse.
- Fill in the form and upload your résumé there. Jobiwork never sees your application.
- Upgrade will reply to you directly. No real employer asks you for money to apply.
Posted 29 Sept 2026 · checked 29 Oct 2026 · Report this job