It could be the culture that is the problem. Good managers are very accommodating to people of all ages & races. It's tricky to advise without knowing what the hierarchy looks like in your company.
I see some problems, though - why are there no promotion opportunities? Why were you, not promoted & younger people hired from outside? Did you had any discussions with senior management yet & did they give you any feedback?
Usually, mid-size to large tech companies have two career paths. Engineer to Principal OR Engineer to Engineering Manager. Some firms have people like technical leads. First, you want to decide on what path to choose. Both are quite different.
I see some problems, though - why are there no promotion opportunities? Why were you, not promoted & younger people hired from outside? Did you had any discussions with senior management yet & did they give you any feedback?
Usually, mid-size to large tech companies have two career paths. Engineer to Principal OR Engineer to Engineering Manager. Some firms have people like technical leads. First, you want to decide on what path to choose. Both are quite different.