When I joined the startup, I was the most experienced engineer and I had two junior engineers working with me. At that point, I had the choice to make architecture decisions and the CTO would work with me to design new systems. The systems I created have worked well, it has been 1 year now and there are no issues with them.
The company has grown and we have hired a lot of seniors now. I have not been included in any new discussions like hiring, the product roadmap. Even on a project where I had taken the lead on it from a very long time (I was not assigned to it, I just assumed the ownership) now the CTO wants the opinion of another senior engineer.
I'm good at infra work and have setup infra when the senior engineers are not able to do it. I'm not sure about my level either as during the 1:1s I was level as an upper mid level while my colleagues believe I'm senior. It shouldn't really matter as I want to just write code and help others, but with a proper title, I think people might take me more seriously.
When speaking to the CTO about my performance, they believe that I'm doing good and probably I'm being too hard on myself. I do know I have dropped the ball at times as I have too much on my plate at times.
I'm just scared that I'm becoming becoming less relevant in the company & really want to increase my influence.