About Ecomsellertool
A small, senior team building custom ecommerce software since 2017. We’re the engineers your operators rely on when off-the-shelf SaaS stops fitting.
Who we are.
Ecomsellertool is a specialist engineering shop for the ecommerce world. We build custom, production-grade software on top of Amazon SP-API, the Advertising API, Walmart, eBay and Shopify — the kind of internal tools operators usually can’t buy off the shelf.
We’re intentionally small. No sales org, no account managers, no junior hand-off mid-project. Every client works directly with senior engineers who’ve lived inside the SP-API and other marketplace APIs since day one.
How we got here.
- 2017Founded as an Amazon MWS specialist shop. First 5 SP-API integrations shipped.
- 2019Expanded to Walmart, eBay and Shopify. Launched our first full ops dashboard.
- 2021Aggregators and holdcos become our largest segment. 30+ tools in production.
- 2023AI-native engineering adopted across the team. Delivery cycles cut by ~40%.
- Today50+ custom tools, 100+ teams trusting us, same senior engineers on call one.
Want to see what we’re working on?
Browse the portfolio, or book a 15-min call and we’ll walk you through live dashboards on screen.