Channable has a tech blog where you can find more details.

The most popular ones discussing technology choices (with HN discussion):

- Haskell (https://news.ycombinator.com/item?id=13782333)

- Nix (https://news.ycombinator.com/item?id=26748696)

You can find more posts on:

- https://www.channable.com/tech

- And the HN discussion with this Algolia query: https://hn.algolia.com/?dateRange=all&page=0&prefix=true&que...

Hope those are useful to you! :-)

Disclaimer: I led DevOps at Channable for a while, but I no longer work there.