What's the part of marketing you are not able to commit to because of your other and equally important activities?
Is it SEO (search engine), SEM ( search engine marketing paid/display), SMM (social), lead generation or sales conversion?
I can tell you one thing for sure, you are looking at right profile as I excel at the area where you are currently facing difficulty..
To name few :
SEO, SEM/SMM, Email Campaigns, Lead generation, sales conversion, growth hacking, PPC ( Display/Search), Affiliate Marketing, Copy-writing for effective and engaging advertising campaigns.
Certifications:
Digital Marketing Expert by Woorank
Google Analytics/Adwords certified by Google
So HIRE ME ! Or else your competitor might :)