Fullstack Engineer, Whatnot
Seller Growth
$180-230k
Offers Equity
Live stream platform & marketplace
Be an early applicant
Live stream platform & marketplace
1001+ employees
Be an early applicant
$180-230k
Offers Equity
1001+ employees
Company mission
To enable anyone to turn their passion into a business and bring people together through commerce.
Role
Who you are
- 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 Fullstack Engineer, you should have (e.g. 3+ years of generalist software development experience in high growth startups), plus:
- Bachelor’s degree in Computer Science, a related field, or equivalent work experience
- Knowledge of multiple programming languages (we primarily use Python, Elixir, JavaScript—knowledge of these in particular not required)
- Web development experience with React, using GraphQL for API development, and modern frontend applications (exposure to Next.js framework is not required but preferred)
- 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
What the job involves
- Seller Growth is responsible for growing sellers on Whatnot — enabling them to turn their hobbies into businesses. Within Seller Growth, the Platform pod ensures that this growth is sustainable, trustworthy, and scalable
- As our next software engineer on the Seller Growth Product pod, you will design and build the systems that sit at the heart of the new seller funnel. Your work will focus on:
- Protecting the funnel from fraud and abuse: Developing and scaling systems for identity verification (IDV), fraud detection, and automated trust/risk reviews that safeguard buyers while minimizing friction for good sellers
- Ship seller-facing experiences: Deliver features across onboarding, education, and seller incentive flows — working across the full stack (backend and frontend)
- Build platform intelligence: Develop seller enrichment pipelines and signals to route sellers to the right onboarding, incentive, and discovery paths
- Drive growth through experimentation: Design and analyze A/B tests to guide product decisions and accelerate seller success
- Create scalable infrastructure: Build and maintain data pipelines and growth systems (e.g., notifications, lifecycle triggers) that other pods and teams can leverage
- This pod works at the intersection of growth, trust, and platform-ization. You’ll be responsible for deeply technical systems (IDV, fraud signal repositories, seller enrichment pipelines, predictive models) that directly influence GMV, seller retention, and buyer trust. The pace is fast: every week, thousands of sellers apply to sell, and your work ensures that Whatnot can confidently scale this influx without compromising marketplace integrity
Our take
Live shopping is changing the way people engage with eCommerce and Whatnot is one of the key platforms driving this shift. The company operates across the US, UK, and Europe, where millions of people connect each day to buy, sell, and build communities around shared interests.
Founded in 2019, Whatnot allows real-time auctions where buyers can watch sellers showcase products and share their expertise, creating a more interactive and personal shopper experience. Sellers include individual creators and small businesses who use live shows to reach audiences and grow their online presence.
As of 2025, the company reports over $6B in sales, with sellers earning significantly more on average than other major marketplaces. And with a range of investor support, Whatnot is committed to developing new ways to make online shopping more social and community-driven.
Steph
Company Specialist at Welcome to the Jungle
Meet the team
Jon Malkemus, VP Product Design
Insights
54% employee growth in 12 months
Company
Funding (last 2 of 8 rounds)
Oct 2025
$225m
SERIES F
Jan 2025
$265m
SERIES E
Total funding: $974.2m
Company benefits
- Wellness: Health, dental, vision, and life insurance plans. We also cover some of the cost for your dependents as well.
- Compensation: Generous compensation, including a competitive base salary and equity. Whatnot offers monthly reimbursement for internet and phone costs, along with a one-time home office set-up allowance. Whatnot offers a pension plan and matches employee contributions of up to 4% of the employee’s base salary.
- Recharge: Whatnot gives you the freedom to take time off as you see fit. And, we take company-wide Winter and Summer breaks so we can recharge. Whatnot provides a monthly allowance for wellness expenses. We know that to take care of our customers, we have to take care of ourselves. Supplemental health and life insurance coverage comes standard at Whatnot. 16 weeks of paid parental leave, and an additional one-month gradual return-to-work period.* Plus an additional childcare allowance, and a lifetime allowance for family planning, including adoption and fertility expenses. *The leave allowances provided by Whatnot may be dictated / informed by your country’s legal requirements,
- Flexibility: 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.
Company values
- Always listen to customers
- Move uncomfortably fast
- Prioritize impact ruthlessly
- Own everything and nothing
- Set crazy goals
- Provide extreme transparency
- Optimize for the upside
- Team over ego
- Figure it out
- Deeply understand why
- Have fun & be kind
Company HQ
Venice, Los Angeles, CA
Articles
Leadership
Grant LaFontaine
(Co-Founder & CEO)Former Product Marketing Manager at Google, Project Manager at Facebook. Also co-founded Kit.
Logan Head
(Co-Founder & CTO)Experience in Engineering, including at Maker's Row, Factr, and Flight Club. Former Senior Product Manager at GOAT.
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