Hello. I'm a Senior Frontend Engineer. I have a lot of knowledge on the backend - it's something I started off with on my learning journey. But I have almost zero enterprise experience with it. I'm having trouble transitioning to a more FullStack position, let me tell you why.

I keep worrying that I don't have sufficient knowledge on security and stability. I don't want to implement something and have it blow up or be a glaring security hole. I feel like I can't handle that responsibility. I also don't have a lot of opportunity to learn from senior backend people and have them review my work as the company landscape isn't very friendly to that (it's complicated...). Essentially, assuming changing jobs is not an option, do you have any advice on how to go in that direction?