Note: The job is a remote job and is open to candidates in USA. Whatnot is hiring a Fullstack Engineer for its App Platform team, which builds shared client infrastructure for iOS, Android, and Web. The role focuses on scaling web backend services, strengthening networking and persistence layers, improving client testing, reducing crashes, and helping product teams build reliable applications efficiently.

Responsibilities

• App Platform is Whatnot's client infrastructure team, building the consistent, reliable foundation that every product team builds on top of across iOS, Android, and Web
• Rather than owning a single feature surface, the team pushes technical boundaries so product pods can move fast without sacrificing quality — owning things like app stability and observability, the Whatnot Design System, localization, core components, and the shared architecture that keeps our apps performant and consistent at scale
• As an Fullstack Engineer on App Platform, you'll focus on the infrastructure and building blocks that feature teams rely on: scaling our Web backend services, strengthening our networking and persistence layers, improving our client testing harnesses, driving app stability and crash reduction, and partnering closely with product teams to make sure the "right way" to build is also the easiest way
• Contribute to team-wide ownership of production health, incident response, and continuous improvement of platform reliability

Skills

• 5+ years of software development
• Bachelor's degree in Computer Science, a related field, or equivalent work experience
• Web development experience with React, using GraphQL for API development, and modern frontend applications
• Backend expertise: Proven track record of building end-to-end high-scale product experiences as a fullstack engineer
• Excellent product instincts—you first think about users rather than the best technical solution
• Care deeply about the craft of software engineering, maintaining systems at scale, and how to balance the productivity and velocity of teams while maintaining a high quality end-user experience
• You can mentor others, and prioritize building inclusive, supportive teams
• Project owner—you've strong ownership instincts and can own projects from inception to production and beyond
• You are known for shipping products and features lightning-fast
• You're an excellent problem solver and can operate autonomously
• Ability to pick up on new technologies very quickly
• Proven track record of delivering features
• Exposure to Next.js framework is not required but preferred
• Experience with Node or Python on backend, and/or Postgres databases is a plus

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
• Monthly allowance for wellness
• Annual allowance towards Childcare
• Lifetime benefit for family planning, such as adoption or fertility expenses
• 401k offering 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
• 16 weeks of paid parental leave + one month gradual return to work; company leave allowances run concurrently with country leave requirements, which take precedence
• Flexibility to work from home or from one of our global office hubs; this role requires living within commuting distance of the New York or Seattle hub

Company Overview

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