Fullstack Engineer, Seller Insights

Whatnot
New York
Workplace: HybridFull timeUSD 207,000 - 230,000 annuallyFunction: Software EngineeringEducation: bachelorsSkills: ["Bias for action","Problem-solving","Collaboration","User empathy","Curiosity"]

Build end-to-end features for the Seller Insights team, translating complex seller analytics into intuitive, high-impact experiences. Own development from backend data pipelines through frontend UI components and data visualizations, collaborating with product managers and engineers to address seller pain points. Iterate quickly on new insights and tools that help sellers optimize strategy, inventory, and sales performance across Whatnot’s live commerce platform.

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FursaFursa
Whatnot
Whatnot
4 days ago

Fullstack Engineer, Seller Insights

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Last checked: 1 hour agoStatus: Live

Job Summary

Build end-to-end features for the Seller Insights team, translating complex seller analytics into intuitive, high-impact experiences. Own development from backend data pipelines through frontend UI components and data visualizations, collaborating with product managers and engineers to address seller pain points. Iterate quickly on new insights and tools that help sellers optimize strategy, inventory, and sales performance across Whatnot’s live commerce platform.
Location: New York
Workplace: Hybrid
Employment Type: Full time
Job Function: Software Engineering
Seniority: Mid level

Key Responsibilities

  • •Architect and develop data visualizations and UI components that turn complex analytics into actionable seller strategies.
  • •Collaborate with product managers and engineers to identify seller pain points and build scalable, high-performance features.
  • •Work across the full technical stack, from backend data pipelines to frontend interfaces, to deliver a seamless analytics experience.
  • •Iterate rapidly on new insights and tools that help sellers grow their businesses.
  • •Own end-to-end development of features supporting the Seller Insights mission for Whatnot’s seller community.

Pay and Benefits

Salary: USD 207,000 - 230,000 annually
Perks:Health InsuranceDentalVisionRemote WorkHome OfficePaid LeaveParental Leave401kPensionChildcareCell Phone

Key Requirements

  • •Bachelor’s degree in Computer Science or related field, or equivalent practical experience.
  • •Full-stack proficiency across mobile (iOS/Android) and web plus backend systems.
  • •Strong product intuition and user empathy, especially engaging directly with sellers.
  • •Data-driven mindset with knowledge of data concepts and visualization to deliver actionable insights.
  • •Bias for action in fast-paced environments, focused on solving core user problems and delivering impact.
Experience:Live commerceMarketplacesHigh growth startups
Education:Bachelor's in Computer Science
Skills:Bias for actionProblem-solvingCollaborationUser empathyCuriosity
Tech Stack:IOSAndroidData pipelinesData visualizationUI componentsMobileWeb

Company Brief

Whatnot
Whatnot is a live-stream shopping marketplace connecting sellers and collectors for trading cards, toys, and collectibles. The platform hosts live auctions and interactive streams, enabling creators and small businesses to sell directly to engaged communities.
Industry: Online Marketplaces
Company Size: Large (251 to 1,000 employees)
Growth: Scaleup
Valuation: Unicorn (USD 1B+)
Funding: Series D
Headquarters: United States
Founded: 2019
WebsiteLinkedIn