Senior Data Scientist, Risk

San Francisco, CA - USA

Monthly Salary: Not Disclosed

Posted on: Yesterday

Vacancies: 1 Vacancy

Job Summary

Block is one company built from many blocks all united by the same purpose of economic empowerment. The blocks that form our foundational teams People Finance Counsel Hardware Information Security Platform Infrastructure Engineering and more provide support and guidance at the corporate level. They work across business groups and around the globe spanning time zones and disciplines to develop inclusive People policies forecast finances give legal counsel safeguard systems nurture new initiatives and more. Every challenge creates possibilities and we need different perspectives to see them all. Bring yours to Block.

The Role

This role will be part of the Risk Product Data Science team focusing on improving risk outcomes while maintaining a strong seller experience across the Payments Risk domain. The Data Scientist will explore new classes of risk controls size opportunities assess impact and evaluate trade-offs. They will also optimize risk decisioning for payments products drive product improvements and enhance the end-to-end seller experience. The role partners closely with Product Engineering and Risk teams to deliver data-informed insights guide strategy and ensure consistent execution of risk initiatives.

*Work from anywhere: This role can be performed from any location in the US with the flexibility to work from home

You Will

Analyze risk actions and quantify impact on losses and seller experience
Evaluate effectiveness and trade-offs of risk controls
Design execute and analyze A/B tests to validate features and optimize risk decisions
Apply statistical and modeling techniques to understand customer behavior and inform strategy
Collaborate with engineers to log and curate data for analysis
Build metrics dashboards and visualizations to monitor performance and guide decisions
Partner cross-functionally to translate insights into actionable product and risk improvements
Communicate findings and recommendations clearly to team leads and stakeholders

You Have

8 years of post-graduate industry experience in product data science; experience in risk is a plus
Deep experience in product A/B testing including experiment design analysis interpretation and guiding decisions under imperfect data
Track record of influencing product and risk strategy through data-driven insights and strong cross-functional partnerships
Proven ability to build and own metrics dashboards and monitoring systems in fast-paced evolving environments
Ability to communicate complex technical concepts clearly to non-technical audiences and influence without authority
Strong stakeholder management skills including navigating trade-offs across Product Engineering and Risk
Strategic thinker who balances analytical rigor with business pragmatism and long-term impact
Proactive mindset with the ability to identify emerging risks and opportunities through data patterns
Self-directed operator who can independently drive projects end-to-end after collaborative scoping
Bachelors degree required in Data Science Statistics Computer Science Mathematics Engineering or a related quantitative field; Masters or PhD preferred or equivalent advanced industry experience

Technologies We Use and Teach

Proficiency in Python (e.g. Pandas NumPy) and SQL (e.g. Snowflake BigQuery MySQL)
Experience with analytics and BI tools (e.g. Looker Mode)
Familiarity with Git and version control workflows
Strong foundation in probability and statistics including A/B experiment design and evaluation statistical inference and anomaly detection
Experience leveraging LLMs and prompt engineering to accelerate development or analyze non-quantitative data

Were working to build a more inclusive economy where our customers have equal access to opportunity and we strive to live by these same values in building our workplace. Block is an equal opportunity employer evaluating all employees and job applicants without regard to identity or any legally protected class. We will consider qualified applicants with arrest or conviction records for employment in accordance with state and local laws and fair chance ordinances.

We believe in being fair and are committed to an inclusive interview experience including providing reasonable accommodations to disabled applicants throughout the recruitment process. We encourage applicants to share any needed accommodations with their recruiter who will treat these requests as confidentially as possible. Want to learn more about what were doing to build a workplace that is fair and square Check out our ID page.

While there is no specific deadline to apply for this role U.S. roles are typically open for an average of 55 days before being filled by a successful candidate. Please refer to the date listed at the top of this job page for when this role was first posted.

Required Experience:

Senior IC