Software jobs in Denver?

I’ve heard there are a lot of tech jobs in Denver/Boulder area… I’m having a hard time figuring out which software jobs have physical offices in Denver vs. those that allow remote work from Denver.

Do large tech companies (Google, Microsoft, Amazon) have physical locations in Denver/Boulder where they hire software engineers? Are there other smaller tech companies with headquarters in that area? Outside of tech companies, are there other large, stable companies that have software needs (banks, healthcare, manufacturing) that hire software engineers?

I’m hoping to end up in Denver and would like to know what job opportunities would be. Thanks!