Fullstack Engineer, Merchant Systems

Whatnot•Seattle, WA

1d•Hybrid

About The Position

Whatnot is the largest livestream shopping platform in North America and Europe to buy, sell, and discover the things you love. Whether it's trading cards, fashion, electronics, or live plants, our sellers are building real businesses across hundreds of categories. We're building live commerce at a scale that's never been done in the West, and there's no playbook to copy. The people here are shaping how an entirely new industry develops. As a remote co-located team, we're inspired by our values and anchored in hubs across the US, UK, Ireland, Poland, Germany, and Australia. We move fast, stay close to our users, and focus on the work that drives the most impact. We're one of the fastest growing marketplaces and were recently named the #1 Best Startup Employer in America by Forbes. 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. The Inventory team, nested within the Seller Engineering org, owns the core data models and systems for listings, products, and catalog, and how they connect into Discovery, Logistics, and Seller Store. They build the foundations that let sellers manage inventory at scale while keeping buyer-facing surfaces accurate and up to date. 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 New York or Seattle hubs. People who do well at Whatnot tend to be comfortable figuring things out as they go, biased toward action, and genuinely curious about what they're building. They care more about outcomes than credit and stay close to the product and the people using it. As our next frontend-leaning fullstack engineer on Inventory, you should have (e.g. 5+ years of generalist software development experience in high growth startups), plus:

Requirements

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 (exposure to Next.js framework is not required but preferred).
Backend Expertise: Proven track record of building end-to-end high-scale product experiences as a full-stack engineer. Experience with Python on backend, and/or Postgres databases is a plus.
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

Nice To Haves

Web development experience with React, using GraphQL for API development, and modern frontend applications (exposure to Next.js framework is not required but preferred).
Backend Expertise: Proven track record of building end-to-end high-scale product experiences as a full-stack engineer. Experience with 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
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