I can help you in implementing Google Tag Manager in any Website / Mobile App and can help you to create Containers with any kind of Tags, Triggers & Variables. My experience includes Tag implementaion for CMS such as Wordpress, Magento, Adobe Business Catalyst, Drupal, Joomla, Prestashop, Bigcommerce, Woocommerce, Squarespace, Android, IOS & much more.
Note : your minimum order must be 2 basic gigs.
Always ensure you have backup of your websites in place
This gig may require sharing contact details (email ) in some cases