Hello.
Shortly speaking, I can handle your requests entirely using Ruby on rails, not PHP.
If that is OK with you, you just found your long-term available freelancer.
Why Rails? Because YES!
Secure, lightweight, ultra-fast and reliable.
Shopify is built on Rails... not on PHP.
Reach me over the chat for a quick unvinculative talk about your requirements.
I work alone, no team, no outsourcing, available over 8h per day and working on 1 single project at a time.
Warranty is given and revisions are obviously included.
Best regards,
Diogo