Remote-friendly Senior Backend Engineer, Logistics Platform

Whatnot; San Francisco (CA); Hybrid; USD 150,000 - 210,000; Full time

Benefits offered by this job

Health Insurance (Medical, Dental, Vis

Work From Home Support

Home office setup allowance

Monthly internet/cell phone allowance

Wellness and childcare allowances

401(k) with employer match (US)

Parental leave

Job summary

Whatnot is seeking a Senior Software Engineer for the Logistics Platform to strengthen source-of-truth systems, APIs, and internal interfaces that power shipping workflows. You will own backend work across data quality, shipment state normalization, and observability while collaborating with Product, Data Science, CX, Ops, Trust, and Finance to deliver reliable, scalable logistics capabilities.

You will also build tooling and monitoring to detect issues earlier, improve data correctness, and

Qualifications

• Experience building and owning meaningful backend or platform systems in production at senior scope.
• Strong product judgment and ability to connect technical work to user impact, business outcomes, and trade-offs.
• Experience in complex marketplace, coordination, delivery, fulfillment, trust, or post-purchase systems.

Responsibilities

• Build and improve source-of-truth systems, APIs, and internal platform interfaces for logistics workflows.
• Own backend and platform work across logistics data quality, shipment state normalization, observability, and debugging surfaces.
• Partner with Product, Data Science, CX, Ops, Trust, and Finance to turn logistics problems into durable systems and better outcomes.
• Improve the correctness and timeliness of logistics data powering support and operational workflows.
• Build tooling and monitoring to detect problems earlier and speed up truth finding.
• Use AI thoughtfully to improve engineering quality while maintaining verification and risk judgment.

Skills

Backend systems

Platform ownership

Observability

Data quality

AI in engineering

Collaboration

Tools

APIs

Backend services

Job description

Whatnot is seeking a Senior Software Engineer for the Logistics Platform to strengthen source-of-truth systems, APIs, and internal interfaces that power shipping workflows. You will own backend work across data quality, shipment state normalization, and observability while collaborating with Product, Data Science, CX, Ops, Trust, and Finance to deliver reliable, scalable logistics capabilities.

You will also build tooling and monitoring to detect issues earlier, improve data correctness, and