After helping fintech companies build their customer service operations, here's what actually works—and what definitely doesn't. Getting a credit card off the ground is no easy feat; it takes investors, strategy, marketing, and investors again. If Founders are lucky enough to make it to launch, they can sometimes be left with a false sense of security. Take “ABC Card”, for example, six months after launch, they were riding high. Tens of thousands of cardholders, solid growth

A founder’s guide to the paths, tradeoffs, and decision points that matter There’s more than one way to launch a credit card. If you’re a fintech founder or early product lead exploring how to offer a credit product, you’ve likely discovered this already: there’s no single blueprint. Just a handful of viable paths each with their own infrastructure choices, regulatory implications, cost profiles, and long-term consequences. This post breaks down the core approaches, the real-

Gradient Boost Models (GBMs) have become the go-to tool for many credit modelers for good reason. GBMs can unlock meaningful lift in predictive accuracy, helping lenders better distinguish between high- and low-risk applicants, expand safe approvals, and reduce losses. But with great power comes great risk. At Ensemblex, we’ve spent years developing, testing, and monitoring GBM credit models. And while we remain strong advocates for their use in the right context, we also kno