update and maintenance of my shopify website that integrates with lightspeed retail

I'm looking to have updates and maintenance tasks done for my Shopify website that will integrate with Lightspeed Retail. My main focus is on theme customization, plugin installation and configuration, and product updates and inventory management. No specific deadline has been set for the updates and maintenance tasks, so I am flexible with the timeframe. As for the integration with Lightspeed Retail, I just require the basic integration, as I do not have any specific requirements. If you have the necessary skills and experience, I would be grateful for your help. Thanks!