Ongoing Shopify Maintenance, META, Google ads & weekly Enhancements

I’m looking for a reliable Shopify, META & Google specialist to take full ownership of the store’s monthly upkeep. My biggest need is consistent, worry-free maintenance, but I also want the flexibility to slip in small custom tweaks and product updates whenever they’re required... (Budget: $750 - $1500 AUD, Jobs: API, CSS, Digital Marketing, Google Ads, HTML, JavaScript, Shopify, Xero, Zapier, Zoho)