[casion]

Imposter syndrome assumes that some other person knows exactly what they are doing at all times, and you do not, therefore you're not a fit for that environment.

Nobody is like that.

Even the most competent of people make mistakes, have doubts, change their mind, get anxious before presentations etc...

If you are providing sufficient value in your context then great! Keep it up. If you're not sure then ask for concrete feedback on specific tasks occasionally.

However, in my experience in tech education and management is that "Imposter Syndrome" is rooted deeply in the idea that other people have some mythical level of competency and lack of doubt which puts your capabilities into question.

They do not, and you do not.