Fullstack Engineer

Who you are

• People who do well at Whatnot tend to be comfortable figuring things out as they go, biased toward action, and genuinely curious about what they're building. They care more about outcomes than credit and stay close to the product and the people using it
• As our next fullstack engineer you should have (e.g. 4+ years of generalist software development experience in high growth startups), plus:
• Bachelor’s degree in Computer Science, a related field, or equivalent practical experience
• Full-stack proficiency: You are comfortable working across the entire stack, from mobile (iOS/Android) and web to backend systems
• Strong product intuition and user empathy: You are eager to engage directly with sellers to deeply understand their needs and challenges
• Data-driven mindset: You have a solid grasp of data concepts and visualization, and can translate complex analytics into clear, actionable insights for our sellers
• Bias for action: You thrive in fast-paced environments, staying laser-focused on solving core user problems and delivering impact

What the job involves

• The Seller Insights team empowers sellers to scale their businesses by delivering critical data and actionable intelligence
• As we redefine live commerce, we need to equip sellers—ranging from hobbyists to high-volume entrepreneurs—with the clear, data-driven insights necessary to optimize their strategy, inventory, and sales performance
• As a Fullstack Software Engineer on the Seller Insights team, you will be pivotal in shaping the platform that translates complex data into intuitive, high-impact user experiences. You will own the end-to-end development of features that help our community thrive
• Architect and develop sophisticated data visualizations and UI components that turn complex analytics into clear, actionable seller strategies
• Collaborate cross-functionally with product managers and fellow engineers to identify seller pain points and translate them into scalable, high-performance features
• Navigate the full technical stack, from backend data pipelines to frontend interfaces, ensuring a seamless and performant analytics experience
• Iterate rapidly on new insights and tools, directly influencing how sellers grow their businesses on Whatnot

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.