> Markdown version of [/jobs/ext/4565458-staff-software-engineer-fulfillment-expansion](https://www.wearedevelopers.com/jobs/ext/4565458-staff-software-engineer-fulfillment-expansion). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Staff Software Engineer, Fulfillment Expansion - **Company:** Whatnot Inc. - **Location:** New York, NY, United States (Remote available) - **Experience:** Expert - **Salary:** $230,000.0 - $290,000.0 - **Contract:** Permanent contract - **Skills:** Distributed Systems, Software Engineering, Information Technology - **Published:** November 4, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=a523700ad42ff9ba ## About the Role 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., * Bachelor's Degree in Computer Science or related field or equivalent work experience. * 8+ years of full-time software engineering experience, including building and operating large-scale distributed systems in production. * Strong communication skills and a track record of leading substantial technical initiatives across teams, defining problems clearly, aligning partners, and shipping solutions through ambiguity. * Excellent product instincts. You prioritize solving user problems rather than focusing purely on technical perfection. * Demonstrated experience modeling complex technical domains and building abstractions that accelerate product development. * Ability to take ownership of an ambiguous area, define it, and then drive impact. * Ability to flexibly work across multiple workstreams, thriving in a fast-paced environment. * A commitment to hands-on engineering, with the judgment to write code, document architectural decisions, and drive alignment when needed. * Experience mentoring engineers and improving the quality of designs, code, and operational practices. Nice to have * Experience in adjacent domains like rideshare coordination, food delivery, marketplace fulfillment, trust/risk operations, or order tracking and exception-handling systems. * Experience working on a marketplace or other two-sided platform. * Direct experience in logistics, shipping, fulfillment, or payments systems. ## Description Fulfillment is one of the most operationally complex and business-critical parts of Whatnot. It directly shapes buyer trust and retention, seller confidence, CX burden, trust and enforcement decisions, top-line growth, and the bottom-line economics of the business. The Fulfillment org builds the systems and interfaces that power the fulfillment of tens of millions of shipments per month.