Software Engineer, Fraud
WhatnotSan Francisco, California, United States • Los Angeles, California, United States • Seattle, Washington, United States • New York, New York, United States
Posted January 15, 2026
Full Time
About the Company
Whatnot is the largest live shopping platform in North America and Europe, building the future of online marketplaces.
Job Description
Join the Whatnot team as a Software Engineer in the Fraud Experience team, building intelligent systems to detect and prevent fraud in the live shopping platform. Lead the architecture of fraud detection systems, build user graphs, design and deploy ML models, and develop scalable data pipelines.
Requirements
- Lead the full architecture of fraud detection, prevention, and intervention systems
- Build intelligent user graphs to model behavioral patterns and detect collusion networks
- Design, train, and deploy traditional ML and LLM-powered models to detect fraudulent activity
- Develop scalable data pipelines and real-time inference systems
- Perform deep behavioral and adversarial data analysis to surface emerging fraud trends
- Stay ahead of the curve by translating new insights into adaptive, production-ready systems
Benefits
- Generous Holiday and Time off Policy
- Health Insurance options including Medical, Dental, Vision
- Work From Home Support
- Home office setup allowance
- Monthly allowance for cell phone and internet
- Care benefits
- Monthly allowance for wellness
- Annual allowance towards Childcare
- Lifetime benefit for family planning
- Retirement; 401k offering for Traditional and Roth accounts in the US and Pension plans internationally
- Monthly allowance to dogfood the app
- Parental Leave