Maybe my situation is a bit different but I have that type of job but because of it... I'm not learning much (or learning general stuff that I could take with me to the next job) or expanding my skillset. Because of that, I often worry about how I will find the next job if I lose my current one. I'm now almost 10 years out of college (early 30s) and I've been doing QA the entire time and with the same company for almost 8 years. Mostly manual UI/black box testing. I have a little automation experience but not much at all. Perks of my current job- Easy (non challenging) tasks, I work (generally) less than 40 hours a week, flexible work schedule, I work remotely (this is a recent thing as I wanted to move out of the bay area as it was too expensive), decent pay.
I work for a big company and my team is small, I don't have much visibility outside my team. Pair that with me now working remotely... well, my network is pretty dismal. I don't work closely with too many people either, kind of in my own little bubble. (Don't get me wrong, I do work with and talk to dev every now and then but it's not a daily thing. And the way my team works is we all work on separate products so we don't have much need to interact with each other. Many of the people I do need help with are generally international, like europe or India, which is why I felt like me moving and working remotely wouldn't be a huge deal.)
My manager just let me know today that he's transferring to a different team and now all my worries of my 'career' are resurfacing. (I've been with this manager for the past 6 years.) If I'm to be honest, if there was a guarantee that I could stay at my job until I retired, then I'd actually be ok with that despite the fact that I've been bored at my job for years now. My main fear is that if I do end up being laid off, it will be difficult for me to find another place to work. I wish I was more ambitious, then maybe I wouldn't have dug myself this hole... (I've never been super career oriented though, even in college I've always had the view of work to live versus live to work. I think having that mentality and also not having much confidence has put me in a really bad place. I struggled through CS and it didn't come easily to me as it did many of my peers. I got into CS because the subject did interest me, but I never did have a ton of passion for it.)
Not sure if it's too late for me at this point... I know I've been way too comfortable and complacent in my job, and I know I pretty much shot myself in the foot due to my decisions. (When I first started working, I had a great team and had plenty of mentors... but then we got bought out and they all left and I was transferred to a different team. I should have left then, but didn't. I've thought about jumping ship many times since, but just haven't been able to do it and now it's almost like I'm stuck. I've even had one person meet with me and flat out told me I should be looking for opportunities outside of my current company because there would be no growth for me here...)
I don't know even know how to start over... I'm aware that my skill set isn't in demand. I know what I need to do (or should do), e.g. start programming on the side and do side projects, re-learn the basics of programming, maybe take some classes again, etc., but I don't even think that will save me at this point due to my resume being so unimpressive and how I really have done a whole lot in the 8 years I've been working. I guess I keep hoping a great opportunity will come up at my job that will help boost my confidence a bit, like getting a big automation project to work on... but if it hasn't happened already, I don't think it will. Even now, I'm thinking... maybe my new manager or team will help push me in the right direction a bit.