I am currently working in academia. In a "spur of the moment" consideration, I applied at a big tech company, where I am now in the interviewing process, having completed some screening questions and a first phone interview.
However, over the last weeks, I realized that I may want to stay in academia a bit longer after all. So at some stage, I will need to exit the interviewing process. I have not received an offer, but I would prefer to not continue wasting their (and my) time doing interviews when I am certain that I don't want to work there.
How do I do this politely in order to not burn any possibility of working for this company at some point in the future?