Topsort
Topsort builds retail media infrastructure for omni-channel retailers, marketplaces, and delivery apps, providing ad serving, auctions, and sponsored product/search tools to monetize onsite and offsite inventory. The privately held company, founded in 2021 and headquartered in San Francisco, sells its platform and APIs to power retailers’ self-serve advertising programs. Customers include Petco and Poshmark, and it raised a Series A in 2024.
Open Positions at Topsort
2 open positions
Build and own the infrastructure powering Topsort’s real-time auction engine, API platform, and internal developer tooling. You’ll improve reliability, automate deployments, strengthen security, and scale production systems in a high-growth global company.
Join Topsort as a client-facing Software Engineer, Integrations, leading technical discovery, demos, and end-to-end API implementations. You’ll bridge sales, customers, product, and engineering to turn complex business needs into impactful solutions.