iOS Engineer, Buyer Growth

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.

The Buyer Growth team is responsible for driving Whatnot’s top-of-funnel growth and first-time buyer success. We focus on acquisition, activation, and early retention, partnering closely with product, data, design, and marketing to build experiences that bring new users into the ecosystem and turn them into loyal customers. As a iOS Engineer on this team, you will:

• Lead and scale critical growth initiatives such as onboarding flows, referral systems, sharing, promotion, rewards hub.

• Develop innovative systems and features for our iOS mobile app using Swift and drive architectural decisions to ensure systems are reliable, scalable, and extensible as we scale rapidly.

• Analyze performance metrics and user feedback to refine product strategies, ensuring we deliver enjoyable experiences.

• Work across product, marketing, and data science to identify high-leverage growth opportunities and rapidly iterate on experiments.

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 Seattle hub.

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

• A bachelor’s degree in Computer Science, a related field, or equivalent work experience.

• Proficiency in Swift, with a deep understanding of iOS fundamentals and SwiftUI-driven UI architecture.

• Proven track record of delivering user-facing features. You are known for shipping products and features lightning-fast.

• Excellent product instincts. You first think about users rather than the best technical solution.

• Bonus:

  • Experience with E-commerce or Social products.

  • Familiarity with A/B testing frameworks, analytics instrumentation, or growth experimentation tooling.

• Flexible Time off Policy and Company-wide Holidays (including a spring and winter break)

• 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.

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.