Sami:
I was one of those engineers that tried to disappear by working in the field when I turned 50, and it didn't pan out for me either. I always did the best possible work, and ended up training staff and management on legal policy and improved methods. So it doesn't matter where you work, since your ethics for work and integrity will follow you. For me work went on, and I didn't start transition until a bit after I retired. My wife and I raised a family along the way, and we had some wonderful times. But I will always regret not being honest with myself and accepting my gender earlier because it would have been wonderful to start transition in my late 30's or early 40's. I'm happy you're getting the chance some of us didn't have. Even if it's a struggle for you, it can and should be done.
Since retirement I've found out that for the last 7 years of my career the HR staff knew I had a problem of some sort, but didn't know exactly what. They tried to reach out to me a couple times without putting me on the spot, but I didn't see it, or subconsciously ignored them. So I kept doing a good job like a dutiful robot that couldn't stop, and felt more depressed and angry as time past.
Don't let this happen to you. It hurts terribly to wait, and takes so long to overcome.
Sorry if this is a little down, but today is one of the bad ones.
Hugs, Kathy