Software Engineer, Seller Growth

Role

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.

Responsibilities

• Design and build the systems that sit at the heart of the new seller funnel.
• Develop and scale systems for identity verification (IDV), fraud detection, and automated trust/risk reviews that safeguard buyers while minimizing friction for good sellers.
• Balance growth with trust and safety: Ensure 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.
• Build platform intelligence: Power accurate seller identification (e.g., enrichment data, signals, and predictive LTV models) to route sellers to the right onboarding, incentive, and discovery paths.
• Create scalable infrastructure: Partner 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.
• Drive long-term seller success: Enable 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, plus: Bachelor’s Degree in Computer Science or related field or equivalent work experience.
• Experience building scalable systems (we primarily use Python, Elixir, JavaScript).
• Able to work across the stack (backend and frontend).
• Excellent product instincts. First think about users rather than the best technical solution.
• Proven track record of delivering features. Known for shipping products and features lightning-fast.
• Able to take ownership of an ambiguous area and define and then drive impact.
• Able 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.

Qualifications

• Curious about who thrives at Whatnot? We’ve found that low ego, a growth mindset, and leaning into action and high impact goes a long way here.
• Flexible to work from home or from one of our global office hubs.
• Team members in this role must live within commuting distance of our Los Angeles, New York, San Francisco or Seattle hub.

Skills

• Backend and frontend development experience.
• Data and growth systems knowledge.
• SQL and dbt experience.

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, such as adoption or fertility expenses
• Roth and Traditional 401k offerings for Traditional and Roth accounts in the US (employer match up to 4% of base salary)
• Pension plans internationally
• Monthly allowance to dogfood the app

Pay

$205K - $290K

Schedule

Flexible to work from home or from one of our global office hubs.