Met with their top "architect". Using quotes here because IMO someone who has been with the company 20+ years with good knowledge about the company but outdated/stale skills in the area of modern software engineering was probably promoted to that position for other reasons. They asked me questions that were hot about 15 years ago. I did not get an offer, but I would think twice before accepting it, as I got a pretty vivid picture of my future there.

What is the difference between monolithic and microservices-based systems?

What are the advantages of using microservices?

The interviewer seemed more interested in finding holes in my resume than assessing my skills. They clearly hadn't prepared for the interview and were going over my resume during the process.