iOS Engineer, App Platform

Whatnot; San Francisco (CA); Hybrid; USD 170,000 - 290,000; Full time

Benefits offered by this job

Flexible time-off

Health insurance

Home office setup

Phone & internet allowance

Wellness allowance

Childcare allowance

Parental leave

401(k) match

Dog-food budget

Job summary

Whatnot is seeking an iOS Engineer for the App Platform team to build reliable foundations used across iOS, Android and web. You will own core components, the design system, and ensure stable networking and persistence layers while partnering with product teams to deliver high‑quality features.

The role emphasizes shipping efficient user-facing features with a strong product focus, and offers flexibility to work from home or at one of our global hubs, with NYC, Seattle, SF, or LA within

Qualifications

• Bachelor’s degree in Computer Science or a related field.
• Proficiency in Swift with solid understanding of iOS fundamentals and SwiftUI-driven UI architecture.
• Proven track record delivering user-facing features quickly and reliably.

Responsibilities

• Architect and maintain core components and the design system for the App Platform.
• Strengthen networking and persistence layers and drive app stability and crash reduction.
• Partner with product teams to ensure the right, efficient way to build is also the easiest way.
• Support cross‑team efforts to scale apps across iOS, Android and web.

Skills

Swift (iOS)

Product instincts

Education

Bachelor's degree in Computer Science

Job description

Whatnot is the largest live 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.

Role

App Platform is Whatnot's client infrastructure team, building the consistent, reliable foundation that every product team builds on top of across iOS, Android and web. Rather than owning a single feature surface, the team pushes technical boundaries so product pods can move fast without sacrificing quality – owning things like app stability, the Whatnot Design System, localisation, core components and the shared architecture that keeps our apps performant and consistent at scale.

As an iOS Engineer on App Platform, you'll focus on the infrastructure and building blocks that feature teams rely on: architecting and maintaining core components and the design system, strengthening our networking and persistence layers, driving app stability and crash reduction, and partnering closely with product teams to make sure the "right way" to build is also the easiest way. It's a high-leverage role for someone who wants their work to compound across the entire app rather than a single feature.

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, Seattle, San Francisco or Los Angeles hub.

You

• 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; 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.

Benefits

• 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 toward childcare.
  • Lifetime benefit for family planning, such as adoption or fertility expenses.
• Retirement – 401(k) offering for Traditional and Roth accounts in the US (employer match up to 4% of base salary) and pension plans internationally.
• Monthly allowance to dog-food 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 dog-fooding 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.

Equal Opportunity Employer

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.

Compensation range: $170 K – $290 K