
About Whatnot
Transforming eCommerce through live shopping experiences
Key Highlights
- Founded in 2019, headquartered in Venice, CA
- Raised $974.2 million in Series E funding
- Facilitated over $6 billion in sales as of 2025
- Remote co-located team with hubs in US, UK, and Europe
Whatnot is a live stream platform and marketplace headquartered in Venice, Los Angeles, CA, that enables users to turn their passions into businesses. Founded in 2019, Whatnot has raised $974.2 million in funding and operates across the US, UK, and Europe, facilitating over $6 billion in sales as of...
π Benefits
Whatnot offers comprehensive health, dental, vision, and life insurance plans, including coverage for dependents. Employees enjoy competitive salaries...
π Culture
Whatnot fosters a remote-friendly culture that emphasizes innovation and community engagement. The company is dedicated to transforming eCommerce thro...

Software Engineering
Whatnot β’ San Francisco - Hybrid
Skills & Technologies
Overview
Whatnot is seeking a Software Engineer to join their Fraud Experience team, focusing on building intelligent systems to detect and prevent fraud. You'll work with Java and machine learning technologies to enhance the security of their marketplace.
Job Description
Who you are
You have a strong background in software engineering, particularly in building robust backend systems. Your experience includes designing and implementing machine learning models that enhance system capabilities and improve user experiences. You are comfortable working with large datasets and have a keen understanding of fraud detection methodologies. You thrive in collaborative environments and enjoy tackling complex problems with innovative solutions. You are detail-oriented and have a passion for creating secure and efficient systems that protect users and enhance trust in online marketplaces.
Desirable
Experience with real-time data processing and analytics is a plus. Familiarity with user behavior modeling and graph databases will help you excel in this role. You are also encouraged to bring any experience you have with community-driven platforms or e-commerce systems, as this will provide valuable context to your work.
What you'll do
As a Software Engineer on the Fraud Experience team, you will lead the architecture of fraud detection and prevention systems. This involves developing end-to-end solutions that integrate machine learning algorithms with backend services. You will build intelligent user graphs to model behavioral patterns and detect collusion networks, ensuring the integrity of Whatnotβs marketplace. Your role will require you to collaborate closely with data scientists and product managers to define system requirements and deliver impactful features. You will also be responsible for monitoring system performance and iterating on solutions based on user feedback and emerging threats.
What we offer
Whatnot provides a dynamic work environment where innovation is encouraged. You will have the opportunity to work on cutting-edge technology that shapes the future of commerce. The company values diversity and inclusion, fostering a culture where all voices are heard. You will also benefit from flexible working arrangements, allowing you to balance your professional and personal life effectively. Competitive compensation and opportunities for professional growth are part of the package, ensuring you can develop your skills and advance your career within the company.
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