Whatnot

Fullstack Engineer, Ads

Whatnot
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1 day ago
Los Angeles, CA, USA +3 moreSenior
H1B sponsor

Base Salary

$207k - $230k/yr

Responsibilities

  • Build and own end-to-end advertising features across backend systems, retrieval and ranking, UI, dashboards, logging, and measurement.
  • Work across mobile, web, and backend systems to deliver seller- and user-facing product experiences.
  • Own projects from inception through production and ongoing improvement.
  • Collaborate with Discovery, Seller Growth, Data Platform, Machine Learning Platform, Payments, and other engineering teams.
  • Mentor teammates and contribute to inclusive, supportive teams.
  • Ship products and features quickly while operating autonomously.

Requirements

  • 5+ years of generalist software development experience.
  • Bachelor’s degree in Computer Science or a related field, or equivalent work experience.
  • Full-stack proficiency across iOS/Android, web, and backend systems.
  • Web development experience with React and GraphQL for API development.
  • Proven experience building end-to-end, high-scale product experiences as a full-stack engineer.
  • Experience with Python and/or PostgreSQL is a plus.
  • Next.js exposure is preferred but not required.
  • Strong product instincts, ownership, problem-solving ability, autonomy, and demonstrated feature delivery.
  • Ability to learn new technologies quickly and mentor others.

Benefits

  • Generous holiday and time-off policy.
  • Medical, dental, and vision insurance options.
  • Work-from-home support, including a home office setup allowance and monthly cell phone and internet allowances.
  • Care benefits, including wellness, childcare, adoption, and fertility allowances.
  • 401(k) plans with employer matching up to 4% of base salary in the US and pension plans internationally.
  • Monthly allowance to use Whatnot as both a buyer and seller.
  • 16 weeks of paid parental leave plus one month of gradual return to work.
  • Flexible work from home or from a global office hub; this role requires living within commuting distance of the New York hub.

Tech Stack

GraphQLiOSNext.jsPostgreSQLPythonReact

Categories

Whatnot

About Whatnot

1,001-5,000 employees

Whatnot is the largest livestream shopping platform in the US, UK, and Europe. Millions of people come to Whatnot every day to buy, sell, and connect over the things they love, from sneakers to sports cards, vintage fashion to fine jewelry, comics to Pokémon, beauty, electronics, and hundreds of other categories. In 2025, live sales on Whatnot surpassed $8B, more than doubling the year before. Over 20 million accounts were created last year alone, and we have been the #1 shopping app in both the US and UK. We've built a real business, but we're nowhere near done. Live commerce at this scale has never been done in the West, which means the people here now are shaping how an entirely new industry develops. The pace here is fast and the expectations are high. We move quickly, prioritize ruthlessly, and trust people to own their work end-to-end. In return, careers grow faster, impact is real, and your colleagues will raise your standards. It's an environment built for people who want to do the best work of their careers alongside others doing the same. We're a remote, co-located team with hubs in the US, UK, Ireland, Poland, and Germany, and we're hiring across every function.

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