Software Engineer, Seller Growth Job at Whatnot (San Francisco, CA, Los Angeles, CA, New York, NY, Seattle, WA)

Job Description

Seller Growth is responsible for growing sellers on Whatnot — enabling them to turn their hobbies into businesses. Within Seller Growth, the Platform pod ensures that this growth is sustainable, trustworthy, and scalable. As our next software engineer on the Seller Growth Platform pod, you will design and build the systems that sit at the heart of the new seller funnel.

Job Responsibility

Protecting the funnel from fraud and abuse: Developing and scaling systems for identity verification (IDV), fraud detection, and automated trust/risk reviews that safeguard buyers while minimizing friction for good sellers
Balancing growth with trust and safety: Ensuring that the thousands of new sellers joining weekly can sell successfully without degrading the buyer experience, while preventing bad actors from gaining distribution or abusing incentives
Building platform intelligence: Powering accurate seller identification (e.g., enrichment data, signals, and predictive LTV models) to route sellers to the right onboarding, incentive, and discovery paths
Creating scalable infrastructure: Partnering with Data Science and Trust teams to design reusable trust and reputation systems, modular fraud prevention frameworks, and experimentation platforms that other pods and teams across Whatnot can leverage
Driving long-term seller success: Enabling better bucketing of sellers by value and risk profile, ensuring that high-potential sellers are accelerated early, while low-quality or fraudulent sellers are contained before they reach scale.

Requirements

5+ years of software engineering experience
Bachelor’s Degree in Computer Science or related field or equivalent work experience
Experience building scalable systems (we primarily use Python, Elixir, JavaScript)
Ability to work across the stack (backend and frontend)
Excellent product instincts. You first think about users rather than the best technical solution
Proven track record of delivering features. You are known for shipping products and features lightning-fast
Ability to take ownership of an ambiguous area and define and then drive impact
Ability to flexibly work across multiple workstreams, thriving in a fast-paced environment
Knowledge of data and growth systems like notifications
Scalability and data pipeline experience with SQL, dbt, etc.

What we offer

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, such as adoption or fertility expenses
Retirement
401k offering for Traditional and Roth accounts in the US (employer match up to 4% of base salary) and Pension plans internationally
Monthly allowance to dogfood the app
Parental Leave
16 weeks of paid parental leave + one month gradual return to work *company leave allowances run concurrently with country leave requirements which take precedence.

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Software Engineer, Seller Growth

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