They've been using several keywords like "hire magento developers", "magento developers", "opencart developers" et al. Apparently, there were major changes in Google seo policy a few years back which hurt these guys a lot.
Targeting digital agencies and vertical specific companies sounds like a great idea. They've tried this in past but the only issue was most of the email ids they got were that of support or help desk. I'll ask them to try this again and oversee execution.
They're already into extensions for magento and opencart and have excellent rating there. They've also started developing other products for developers and agencies.
Thanks again for the excellent inputs.