Your question is completely fine to ask, but I unfortunately don't know the answer, sorry.

On a side note, just fun info, I know that Walmart.ca will be moving to electrode eventually, we don't have a date on the roadmap yet. We've built Electrode to be able to reuse the same components while maintaining a different brands styles, content, etc

i believe i had read in a medium blog post that the .ca backend was build on akka/scala

The backend is built with Oracle Commerce (ATG), the frontend with Play Framework (so Scala and Akka).

Source: http://www.nurun.com/en/news/nurun-launches-redesigned-trans... plus private conversations with people who have worked on the project.