Pronounciations from websites are usually a bit strange XD You should pronounce it like "in-gé-nieur", but don't worry to much about it: in some french areas some people would say: "in-gé-ni-eur". Anyway it's not something we really care about when speaking with someone !

Check this site. Type the word you want to hear and it pronounces for you. http://pt.forvo.com/search/