Fullstack Engineer, Seller Engineering

🚀 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. They shape the technical foundation of the commerce journey, from seller tools, merchandising systems, sales formats, and checkout experience. Seller Merchandising focuses on essential components that enhance Whatnot’s customer experience. They are committed to crafting a fun and engaging journey for buyers and sellers by providing the necessary tools for frictionless shopping on Whatnot—features like Checkout, Listing Page, Seller Shop, Buy It Now, and Flash Sales. Looking ahead, the team is poised to innovate and expand, ensuring an ever-evolving and dynamic marketplace for all users.

In this fullstack role, you will...

• Shape the future of e-commerce by elevating purchasing experiences like Auctions, Buy It Nows, and Flash Sales.

• Invent new ways for users to shop and interact, giving Whatnot buyers more choice and flexibility.

• Build with the latest web technologies (Apollo, Next.js, and beyond) to modernize our web stack and push the boundaries of performance.

• Architect and scale checkout and purchasing systems that power Whatnot’s rapid growth and industry-leading marketplace.

Team members in this role are required to be within commuting distance of our San Francisco, Los Angeles, Seattle, or New York City 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 Seller Merchandising, you should have 5+ 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 don’t need to be told exactly what to do

• Ability to pick up on new technologies very quickly

• Proven track record of delivering features

🎁 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

• Care benefits

  • Monthly allowance for wellness

  • Annual allowance towards Childcare

  • Lifetime benefit for family planning, such as adoption or fertility expenses

• Retirement; 401k offering for Traditional and Roth accounts in the US (employer match up to 4% of base salary) and Pension plans internationally

• Monthly allowance to dogfood the app

  • All Whatnauts are expected to develop a deep understanding of our product. We're passionate about building the best user experience, and all employees are expected to use Whatnot as both a buyer and a seller as part of their job (our dogfooding budget makes this fun and easy!).

• Parental Leave

  • 16 weeks of paid parental leave + one month gradual return to work *company leave allowances run concurrently with country leave requirements which take precedence.

💛 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.