GCP UI login using Vault

I see we have GCP secret engine which can create service account keys and auth tokens.
Can I use Vault to log in to GCP platform itself ?

For example: I use vault to generate dynamic TTL based password mapped to certain user’s account/username and the respective employee can use it to log in to GCP to do regular task ?

Not really - the closest feature to what you describe is Google Cloud - Secrets Engines | Vault by HashiCorp but that’s intended for service accounts, not humans using the UI.

In the name of Zero Trust and secure network access … can we expect the combination of Boundary + Vault for the same issue? (connection to platform like these)