🚀 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

Ads+Promos is a growing engineering org at Whatnot that is dedicated to building systems & features to help Sellers grow their business. As a software engineer on the Ads+Promos team, the most important qualities you'll need are making sound product decisions, navigating new domains seamlessly, taking extreme ownership, and shipping high-quality products fast. We always prioritize the highest impact features and ship them quickly. The software team has a lot of individual responsibility and many more freedoms, so we need to hire people we can trust. Your ability to put customers first, make good trade-offs and deliver impact is essential to us.

As our next iOS Engineer, you’ll help shape the mobile experiences that power this journey. You’ll work closely with design, product, and backend teams to deliver elegant, performant, and impactful features that drive real growth for sellers. Your work will focus on:

• Developing high-quality iOS features in Swift and SwiftUI that power seller-facing experiences across Ads + Promos including creation, configuration & optimization of Promote Tools, Giveaways, Seller-Coupons and Rewards Club.

• ​​Collaborating cross-functionally with product, design, and data partners to define goals, manage scope, and align on priorities that balance speed, quality, and impact.

• Leveraging data and experimentation to guide product decisions — designing and analyzing A/B tests, digging into results, and iterating to accelerate seller success.

• Contributing across the stack when needed (our backend is primarily Python) and staying open to learning beyond iOS.

• Upholding engineering excellence through code reviews, documentation, and thoughtful technical discussions.

• Understand our buyer and seller experiences and become an expert in helping them effectively scale their business through ads & monetization products.

Team members in this role are required to be within commuting distance of our Kraków, Poland 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 iOS Engineer you should have 5+ years of software development experience, plus:

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

• You are comfortable working across the stack, with deep expertise in iOS development, and a willingness to contribute to backend code when needed.

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

• You are an excellent problem solver and don’t need to be told exactly what to do.

• You are open to doing frontend work when required.

• Proven track record of delivering features end-to-end and can ship products and features lightning-fast without sacrificing quality.

• Strong ownership instincts — capable of driving projects from inception to production and beyond.

• The ability to pick up on new technologies very quickly.

• Startup experience at a high-growth company — working in fast-paced, rapidly evolving product environments with frequent experimentation (nice to have).

• Experience with ads systems (bidding, auction, attribution, measurement, etc), infrastructure, and international commerce (nice to have).

Please find our Whatnot Candidate Privacy Notice here.

💛 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.