Whatnot is looking for an Android Engineer, Seller Growth to join our Seller Growth Platform pod. In this senior role, you will design and build the mobile experiences and systems at the heart of our new seller funnel. Your work will directly shape how thousands of new sellers join and succeed on Whatnot every week.

What You'll Do

Develop high-quality Android features using Kotlin and Jetpack Compose that enhance the seller onboarding, verification, and incentive journeys.
Collaborate cross-functionally with product, design, and backend teams to define goals, scope, and technical trade-offs.
Partner with data science to design and interpret experiments that measure seller success and improve funnel efficiency.
Contribute to the evolution of shared mobile infrastructure and best practices across Whatnot’s engineering teams.
Uphold engineering excellence through code reviews, documentation, and thoughtful discussions that raise the bar.

What We're Looking For

5+ years of experience building and shipping high-quality Android applications.
Bachelor’s degree in Computer Science, a related field, or equivalent work experience.
Android expertise in creating fluid, responsive user interfaces.
Strong knowledge of Kotlin and Jetpack Compose.
Adept at reactive programming with Kotlin Coroutines and Flows.
Fluent in MVI or MVVM development.
Care deeply about product quality and performance, creating polished experiences that balance usability and trust.
Thrive in cross-functional environments, partnering effectively with product, design, and backend peers.
Comfortable using data and experimentation (SQL, Snowflake, A/B testing) to guide decisions.
Communicate clearly and drive alignment across teams in ambiguous, fast-changing environments.
Have a growth mindset, taking ownership from concept to launch while mentoring others along the way.

Nice to Have

Experience with trust, safety, or identity verification systems.
Familiarity with observability tools like Datadog and data tools like SQL.
Comfort collaborating beyond mobile (backend or data pipelines).
Passion for developing and mentoring teammates, scaling impact through others.

Technical Stack

Kotlin, Jetpack Compose, Kotlin Coroutines, Flows, MVI, MVVM, SQL, Snowflake, Datadog

Team & Environment

You will be part of the Seller Growth Engineering team, specifically the Platform pod. Our culture is low ego, with a growth mindset, leaning into action and high impact.

Benefits & Compensation

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
16 weeks of paid parental leave + one month gradual return to work

Work Mode

This is a local-city role open to candidates in San Francisco, Los Angeles, Seattle, and New York City.

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.