After initial application, Zoomer scheduled a phone interview that went over the standard description of the particular work at hand and my business and programming background. The interviewer said that they'd send out a technical screening exercise, as is typical.
The "exercise" they sent, however, specified a particular technology stack (which is unusual for that sort of task, which allegedly focuses on general problem-solving approach) and asked for a real-world working solution to a reasonably complex live problem that the company is working on; any useful response to the exercise would have been very simple for the company to drop in to their live product. When I replied, suggesting minor changes (including using an alternate stack instead of their in-house choice), Zoomer called off the interview process.