Always needing 2nd opinion on my work

[Fantastik]

I started a new job a few months ago. The position within the company is middle management but I come as a subject matter expert. I have the qualification and lots of experience.

A couple of days into my job, something did not work out. I sorted it out and told them the solution. A senior manager A (not my line manager) demanded that my subordinate checked my work. I was not happy with this, but not much I can do. I was right.

A few weeks later, I notice a big mistake and informed another senior manager B. His answer was that it can't be a mistake as someone else (less qualified than me) did the work. I was right.

I have never made any mistake at work.

This week, senior manager A and I are having a discussion about my area of expertise. I explain something to him. He says he does not believe that I am right and that he needs to check with senior manager c who has absolutely no expertise on the matter. I say to A that between all of us, I'm the only subject matter expert so not sure why he needs a second opinion.

It may seem silly but I'm finding it draining. I have no history of being wrong or of making mistakes. For context, I am female and much younger that the senior managers who are all men.

What am I missing here? I want to quit.

I feel for you, sadly, pretty sure the habit is going to be hard to break.
Would your line manager be sympathetic? HR?

It s often very difficult for a woman to be taken as a SME in the workplace (trust me, I know). They just can t accept it if you express an idea that goes against the grain, their instinct reaction is that "It can t be right", they d never be systematically dismissive of another man like that.

Always record every incident, you never know...

Speak to your line manager. You've been hired as an SME, presumably because there are a lot of incompetent people doing things wrong.

For context, I am female and much younger that the senior managers who are all men

Well, this speaks volumes.

It is totally because you are a woman.

I would start keeping a diary/record of all these micro aggressions, because this is a form of bullying.

Thanks for the replies. To confirm, it is a SME. Sadly, I won't be able to change them. I'm handing in my notice this afternoon.