No leetcode. I had a series of phone interviews, they asked for multiple code samples, and they contacted references and current/former customers. 10X was more interested in my communication and consistency with customers, and my ability to get new customers on my own. They are big on soft skills, listening to the customer, understanding business requirements, consistent communication. Technical ability matters of course, but freelance contracts usually succeed or fail for reasons other than understanding algorithms. My niche is taking over legacy systems and failed/failing projects, which few programmers want to do, and the 10x founders who interviewed me liked that angle.

Before 10X gave me any projects I met with two of the founders, at a party they threw in San Francisco.