Fucking fuck !
I work with a senior Dev,
It’s pretty much like am working under him....
He’s like a great Dev no doubt about it

But !!!!

He’s a fucking dumbass when it comes to working in a team. He makes changes in my code without telling me. He says He forgot to tell me , every single time

When I ask him how a piece of code works , he says it’s pretty much obvious and acts like even a 6 year old kid Would know this ,
He doesn’t think 2 steps ahead before solving a problem usually creating another problem !

We were once working on a language which we weren’t very good at , so I suggested him to ask another Dev in our company about inputs on our code structure to which he completely Disagreed saying they really won’t know much and that he knows more than them..
Fucking dumbass thinks he knows more than most ...

I have tried confronting him multiple times but he feels but he just won’t listen...

I feel you my friend.

Had a similar situation working in a solicitor office as a C# .NET dev. My supposed "senior" was a 28 year old manchild with economy degree. Don't get me wrong he knew all of the business flow and was able to ship new features quickly for our internal legal case management system (written in procedural programming language called OpenEDGE PROGRESS).

But man he sucked at OOP (internal C# .NET desktop applications). Codebase was not following any design pattern, everything was done on a single thread, lots of static references resulting in memory leaks. Code was basically a frankenstein's monster since it was just glued stackoverflow solutions. Yet he was very proudly living in his own little world. Was suprised by his ability to bullshit his way and always find some excuse to make himself feel better.

It was my first job straight out of uni, but man this job thought me so much. I learned I should never have any business with people who have big EGOs.