Met first with a recruiter and then the hiring manager in separate interviews. Interview was straightforward and very friendly. Talked about past experience and what the company did. Mutually decided it wasn't the right fit for the time being.

After initial recruiter screen, they send a git repo and a developer API key with nebulous instructions to create a new feature for the product. You're instructed to read two sites' worth of documentation, get their application running locally, design and implement a new feature, and submit a pull request--complete with tests and documentation--within 72 hours. Essentially: onboard yourself to the company, make guesses at what their data model actually looks like (because the developer API data is incredibly scarce), design and code an entire feature with minimal guidance on direction or scope, and then get a form letter rejection with zero feedback... after giving over a week's worth of work.