First, Here is the link to their jobs website: https://www.ttecjobs.com/
Ttec is one of the industry leaders with remote work from home jobs. Here is how they describe themselves:
Essentially they are a job listing site that provides the necessary setting to be able to perform customer service jobs from home. They are not an agency but rather a company that works directly with their clients and arrange work from home positions.
In order to find their job listings make sure to click on: "Work from Home" tab at the top and start searching:
Also here is the video where an insider from Ttec is being interviewed on how to apply and what to expect:
And don't forget to explore Ttec FAQ section as it provides a ton of helpful information that I first couldn't find. Let us know in the comments if you are able to find these positions.