Romance between a man who works his way up from being poor and a high class woman

Basically like the title says I would like to see a drama where the main lead has gotten a good job despite having no financial backing. Would like there to be romance with a woman who many are pursuing but she rejects them. I have never seen a drama like this so hoping there is something like this.

Thank you

Smile you is somewhat fitting the discription.

Ms temper Nam Jung ki, if I remember rightly it may be different from your description but it's alpha female beta male. She's his boss and he has no financial backing and struggles with getting promoted. 

Giant is also a good one fitting the decription.