Shopify Tracking Implementation via Google Tag Manager

I'm in need of a professional who can set up Google Tag Manager (GTM) for my Shopify website and track specific events to help me avoid duplication issues I'm currently facing with Facebook Pixel.

Specific events to track:
- Page views
- Purchases
- Add to cart
- Product views

Skills and experience required:
- Proficiency in Google Tag Manager
- Experience with Shopify
- Knowledge of tracking eCommerce events
- Ability to troubleshoot and avoid duplication issues