Some dozen years ago, through a technical recruiter, I had received an appointment for an HR manager to interview me for my suitability for his company. There were specific technical skills required for the position, on which I had some experience.
The first red flag was that the manager of the department had no idea that the HR had scheduled an interview, & so was un-prepared for it.
The second red flag was that the actual supervisor I would be working for was not available, (for the same reason as his boss).
The third red flag was that no one could point to a desk or cubicle where I would be working, & that the tools I would need to do the job being discussed did not yet exist.
In spite of this the HR manager still made an offer, (much to my surprise), on the spot, (another red flag), which was decent enough for me to accept.
When I reported to work, no one was available to assign any tasks. There was no office or computer I could use to start some of the technical aspects of the job for which I was hired.
For the next 4 days, two days before a major four day US holiday weekend, & two days right after, I had to wait for someone. When I mentioned this to one of my new co-workers, the said something like “If they tell you to sweep the floors, you should do it!” Yet another red flag.
The last two days were spent at a remote site where some technical testing was going on, where I was working with only one other fellow. The Monday was okay, we arrived together in a company van. But he would not allow me to spend anytime helping him, I was, it seemed, only there to observe.
The last day we had agreed that we would meet at the remote site at a specific time, as only he had access. I was on time & waited,..and waited.. and waited. After an hour, I finally got a call were I was told to go get some coffee, he would be there in an hour. I went and got some breakfast, & came back, and waited. After two hours after our agreed meeting time, the other guy finally shows up, & we get on with his tests.
At the end of that day, I got a call from HR informing me that I was no longer required, as I wasn't coming up to speed quickly enough. I almost argued that I wasn't given any opportunity to do so, but I demurred with relief as all of the red flags told me that this was not going to work for me either. Only I was going to give them a month, they were just quicker on the trigger.
Funny thing about this was another recruiter contacted me less than six months later about this same company. From their description, some of it specifically technical, I was able to deduce the name of the company, much to the recruiter's surprise, (most of them keep this to themselves until an interview is lined up). I told them of my experience with this company, & why I had no further interest in working there, (even though I was still un-employed).
Over the next year or so I was contacted two more times for an opportunity with this company, for essentially the same job, by different recruitment firms. I replied to each of these recruiters mentioning my brief employment with this company, & my speculation on whey they are still trying to fill the position.
TL;DR: Got hired by a non-technical flunky for a technical position, at a company that did not know what to do with me. It did not work out.