Fullstack Engineer, Purchase Experience

🚀 Join the Future of Commerce with Whatnot!

Whatnot is the largest live shopping platform in North America and Europe to buy, sell, and discover the things you love. We’re re-defining e-commerce by blending community, shopping, and entertainment into a community just for you. As a remote co-located team, we’re inspired by innovation and anchored in our values . With hubs in the US, UK, Germany, Ireland, and Poland, we’re building the future of online marketplaces –together.

From fashion, beauty, and electronics to collectibles like trading cards, comic books, and even live plants, our live auctions have something for everyone.

And we’re just getting started! As one of the fastest growing marketplaces , we’re looking for bold, forward-thinking problem solvers across all functional areas. Check out the latest Whatnot updates on our news and engineering blogs and join us as we enable anyone to turn their passion into a business, and bring people together through commerce.

💻 Role

The Selling team at Whatnot is responsible for building the end-to-end experience of listings, empowering sellers to merchandise their inventory in our various sales channels and formats. There are a variety of buying and selling formats on Whatnot, ranging from short-form live auctions and "Buy It Now" options to offers. The Purchase XP subteam is dedicated to creating new mechanisms for buyers and sellers to transact, aiming to add value to the business and create fun, social experiences (features like auctions, a best-in-class trading card 'breaks' feature, pre-bids, and more). They work across the full technology stack, and collaborate closely with other teams on our projects to solve a wide variety of interesting problems.

In this fullstack role, you will...

Enhance the Breaks experience, one of Whatnot’s most viral and GMV-driving formats, by improving end-to-end performance and delivering the best possible buyer and seller experience.

Reimagine Auctions – Innovate within Whatnot’s core selling format by experimenting with new ways to make bidding more dynamic, engaging, and rewarding for users.

Build feature consistency across mobile and web, providing data to help sellers identify high-performing listings and prevent missed opportunities, and add deeper telemetry to optimize livestream and auction flows.

Build with the latest technologies (Apollo, Next.js) and modern languages (Python, Elixir) to deliver performant, high quality experiences to our users.

We offer flexibility to work from home or from one of our global office hubs, and we value in-person time for planning, problem-solving, and connection. Team members in this role must live within commuting distance of our Los Angeles, New York, San Francisco or Seattle hub.

👋 You

Curious about who thrives at Whatnot? We’ve found that embodying a low ego, growth mindset, and high-impact drive goes a long way here.

As our next Fullstack Engineer on Purchase XP, you should have 3+ years of generalist software development experience in high growth startups, plus :

Bachelor’s degree in Computer Science, a related field, or equivalent work experience

Knowledge of multiple programming languages (we primarily use Python, Elixir, JavaScript—knowledge of these in particular not required)

Web development experience with React, using GraphQL for API development, and modern frontend applications (exposure to Next.js framework is not required but preferred)

Excellent product instincts—you first think about users rather than the best technical solution

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

💛 EOE

Whatnot is proud to be an Equal Opportunity Employer. We value diversity, and we do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, parental status, disability status, or any other status protected by local law. We believe that our work is better and our company culture is improved when we encourage, support, and respect the different skills and experiences represented within our workforce.