It looks interesting if you need to deploy across clouds. On the background they use Terraform a lot : ) Although is you are on AWS, CDK seems to be a simpler path. I spoke to a guy who works at Pulumi and they find it a bit hard to justify support clojure/script due to lack of demand (ie I'm the only person that have ever asked).

https://github.com/StediInc/cdk-clj is very pulumi like

doesn't do the automatic lambda lifting stuff, but /shrug