How to congratulate someone on getting a new job? How would I congratulate someone on getting a new job?

In English I would say something like:

Congratulations on your new job!

I've done a bit of research and came up with these:

祝你找到一个好工作

恭喜获得这个工作

你的新工作表示祝贺

But I'm not sure about how 'natural' these sound, or if there is a better alternative?
「祝你找到一个好工作」 means "Wish you find a good job".
It's usually used when somebody is hunting for a (new) job,

「恭喜获得这个工作」and「你的新工作表示祝贺」 are quite natural expression.
But from my point of view:
「恭喜获得这个工作」   --> 「恭喜您获得这个工作」
「你的新工作表示祝贺」 --> 「对你的新工作表示祝贺」
 are a little better.

You can also say 「祝您今后在工作岗位上大展鸿图！」 to wish other people a bright future on their new job.