So House Telvanni had a very large interest in the Dwemer machinery (honestly who doesn't.)
House Telvanni is the only faction that is known to actually know how to repair, recreate, and build Dwemer machines. Why don't we hear more about them being guards or more interestingly why don't we see Telvanni creating their own magical machines (similarl to Sotha Sil's Imperfects)
House Telvanni is well known for keeping secret knowledge in their House, but from what I gather Dwemer guards seemed common in Vvardenfell.
Evidence being.
1. Baladas having built himself Dwemer guards
2. Llunela Hleran learns how to build you several Dwemer guards
3. Telvanni monster lab - while no person as far as I know are confirmed to be involved, it's existence proves someone or maybe even a group of people were able to learn the secrets of building Dwemer machines.
Just seems weird they never followed up with this in Skyrim if you ask me, they had so much Dwemer related content.
What do you guys think? My only guess is maybe the knowledge was lost during the red year. But that would imply that only Telvanni on Vvardenfell knew