Well it did, in the form of the Gloster Meteor but other than that jet engine technology was still not ready for prime time. Take for example the German jets, they were vulnerable in parts of their flight profile and the very short lifespan of engines plus the expensive materials requires meant they were probably not something the Luftwaffe could have done with from a resources and logistics standpoint late in the war.
Jet engines were not really reliable or powerful enough to eclipse top-class piston engine fighters until the end of the 1940s.