u/Other-Designer-2565

Hi folks

I have been working in tech as a ML engineer for the past 5 years.
I have some research experience from my masters days in college(2019) and have a few good publications with reasonable citations.

Lately i have come in touch with doing some research for a project at work.

And have been thinking of going back to college for a PhD in ML or related fields preferably in the US.

I want to understand hard would it be for a 30 year old in getting a Phd admission in the current market?