The affiliate platform that became the best channel at Creditas

Creditas was growing through paid channels and the cost per acquisition kept climbing. The bet was to build an in house platform for affiliates and banking correspondents, people who already talked to the customer before they went looking for credit.

I was the engineer responsible for the architecture of that product, from the frontend to the API. The operation ended up carrying more than 30% of end to end conversion and became the best acquisition channel in the company.

What held the number up

The part nobody sees: role based authentication, rate limiting on the API, and an app that worked offline, because a good share of the correspondents worked where the connection was poor.