Do not index
Do not index
Signing NDAs is quite normal.
Don’t let that stop you from working with startups. Founders can be protective of their ideas, which is totally understandable.
Just make sure to read the terms carefully. For instance, I always ask if I can showcase the work in my portfolio, and if they agree, I make sure to blur out any sensitive info.
Also, keep in mind that once they hire you, the work is technically theirs. They are just protecting their intellectual property (IP).
Hope that helps.