[savy99]

I am a hiring manager at a small tech startup. I personally find it challenging to differentiate which online certifications are indicators of skill versus an easy checkbox for padding a resume. If the certification is from a prestigious school I do give it slightly more credence, but it would still be far less than relevant work experience, some sort of portfolio, or a bachelor's.

I know that cover letters have gone out of fashion but for me this is the exact sort of thing that a cover letter is made for - to give further explanation to one's qualifications that is difficult to glean from a resume. I still find them useful in some cases and do scan them if they are there!