Building a marketplace sounds simple at first.

You have sellers. You have buyers. One side offers a service, the other side pays for it, and the platform connects them.

That was roughly how I looked at it when I started building NexoRush.

The reality was very different.

A marketplace is not just a website with profiles, listings, and a checkout button. You have to think about trust, payments, disputes, discovery, security, SEO, user experience, and perhaps the hardest problem of all: getting both sides of the marketplace active at the same time.