Brazil has developed jet engines

read here

http://www.polaristec.com.br/products.html

read here
http://www.cta.br/noticia.php?id=654

Brazil has at least designed 4 jet engines up to 2013

These are the TAPP (Turbina Aeronáutica de Pequena Potência), TR-3500, TJ1000 and TJ1200