Software Engineer, Logistics Platform

Role Shipping is one of the most operationally complex and business‑critical parts of Whatnot, directly influencing buyer trust, seller confidence, customer experience, and shipping economics. The Logistics Platform team builds the shared systems, data, and capabilities that underpin shipping on Whatnot, including core logistics data, tracking and scan normalization, platform interfaces, and the observability and investigation surfaces that other teams rely on. We’re looking for a Senior Software Engineer in Logistics Platform to help make those systems more trustworthy, operable, and easy to build on. This is a product‑minded platform role: much of the work is internal‑facing, but the impact is very external—better buyer and seller experience, fewer support issues, stronger trust decisions, and better margin outcomes. Responsibilities Build and improve source‑of‑truth systems, APIs, and internal platform interfaces that other teams depend on for logistics workflows and decisions. Own backend and platform work across logistics data quality, shipment state normalization, observability, and operational debugging surfaces. Partner closely with Product, Data Science, CX, Ops, Trust, and Finance to turn messy real‑world logistics problems into durable systems and better user outcomes. Improve the correctness, timeliness, and usability of the logistics data that powers support, trust, product, and operational workflows. Build tooling, monitoring, and debugging primitives that help teams detect problems earlier and get to truth faster. Use AI thoughtfully in day‑to‑day engineering work to improve quality, learning speed, debugging, and execution—while keeping a strong independent bar for correctness and risk judgment. Requirements Team members in this role must live within commuting distance of our Los Angeles hub. We’re Especially Excited About Candidates Who Have Experience building and owning meaningful backend or platform systems in production at the senior scope—developing and owning moderate‑to‑complex software, disambiguating meaningful problems, and collaborating effectively with stakeholders and cross‑functional partners. Strong product judgment and the ability to connect technical work to user impact, business outcomes, and explicit trade‑offs. Experience in complex marketplace, coordination, delivery, fulfillment, trust, or post‑purchase systems where software decisions interact with messy real‑world state. Strong instincts around data quality, source‑of‑truth systems, observability, and operational debugging. A thoughtful approach to AI: not just using AI for more output, but using it to improve the quality of engineering work while knowing where verification and independent judgment still matter. Comfort operating in fast‑moving, high‑ownership environments with ambiguity and shifting priorities. 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, or fulfillment systems. 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 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 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: $190K – $230K #J-18808-Ljbffr Whatnot