Senior Data Scientist - Flex Pay

Upgrade

Sourced from Upgrade's careers site · Posting last seen October 29, 2026

$100k–$150k San Francisco hybrid Full time 3+ years exp Company has sponsored H-1B before Posted September 30, 2026
Job description

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.

Skills

  • MS/PhD
  • Data Science
  • Statistics
  • Mathematics
  • Computer Science
  • Finance
  • analytics
  • Python
  • Pandas
  • Numpy
  • Scikit-learn
  • SQL
  • documentation
  • present analysis
  • work in a fast-paced environment
  • machine learning
  • Random Forest
  • Gradient Boosted Trees
  • financial services
  • Tableau
  • Power BI
  • Claude
  • PySpark
  • credit scoring
  • portfolio risk
  • customer lifetime value
  • credit risk
  • fraud detection
  • pricing
  • buy now pay later
About this role

Summary

Build predictive risk models and simulators, optimize offers and pricing, and deliver data-driven insights for product and customer strategy.

Job title

Senior Data Scientist - Flex Pay

Experience level

3-5+ years

Minimum experience

3+ years

Industry

financial technology

Location

San Francisco, CA · Hybrid

Salary

$100k–$150k

Listed in the job description

Visa sponsorship

Company has sponsored H-1B before

Management role

No

Posting history
  1. Sep 30, 2026 First posted
  2. Sep 30, 2026 Live now

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