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Fullstack Engineer, App Platform

Whatnot
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Remote$207k - $230kFull-timePosted 4w ago

About the role

Remote full-time role on Whatnot's App Platform, focusing on client infrastructure (Web backend scaling, networking, persistence, testing harnesses, app stability, and shared components) to support iOS, Android, and Web across a fast-growing livestream commerce platform.

Responsibilities

  • Build and scale Web backend services and underlying infrastructure used by multiple product teams.
  • Strengthen networking and persistence layers for high-scale product experiences.
  • Improve client testing harnesses and drive app stability and crash reduction.
  • Collaborate with product teams to ensure the right and easiest way to build across the platform.
  • Own projects from inception to production and beyond, shipping product-facing platform work.

Qualifications

  • 5+ years of software development experience.
  • Bachelor’s degree in Computer Science, a related field, or equivalent work experience.
  • Web development experience with React and GraphQL for API development (Next.js exposure preferred but not required).
  • Backend experience with Node or Python, and/or PostgreSQL databases.
  • Strong ownership, mentoring ability, and passion for building scalable, high-quality software.
  • Ability to learn new technologies quickly and deliver features autonomously.

Skills

Required:ReactGraphQLNode.js or PythonSystem design / scaleAutonomy / ownership
Nice to have:PostgreSQLLeadership / mentoring

Benefits

  • Generous Holiday and Time off Policy
  • Health Insurance options (Medical, Dental, Vision)
  • Work From Home Support
  • Care benefits
  • 401(k) with employer match up to 4% (Traditional and Roth in US) and pension in international locations
  • Monthly allowance to dogfood the app
  • Parental Leave
Last updated Oct 21, 2026. Interested? Apply on the company site.
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About Whatnot

Whatnot is the largest livestream shopping platform in the U.S.

Whatnot is the largest livestream shopping platform in the U.S., connecting buyers and sellers in real-time across any category – from collectibles like trading cards to comics, fashion, sneakers, and more.

marketplacee-commerce
Company profileWebsite

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