If there's a lot of Java knowledge around in a company it can certainly be beneficial to use it ;). I set up a simple REST backend service last year using Quark

If there's a lot of Java knowledge around in a company it can certainly be beneficial to use it ;). I set up a simple REST backend service last year using Quarkus and can think of worse frameworks I could have picked. Also, if a new system has to connect to a legacy system using SOAP there are about 2 languages with a complete and interoperable implementation: Java and .NET. There are lots of toy libraries for other languages but I've never found one fully supporting the entire WS-* standard set.