I speak Indonesian and used to work in Jakarta. Discussions usually used Indonesian language, but jargon and technical terms were always in English. Some terms

I speak Indonesian and used to work in Jakarta. Discussions usually used Indonesian language, but jargon and technical terms were always in English. Some terms were just Indonesian-ised English words (like aplikasi - which I’m sure most English speakers could guess the meaning of). I found other terms did have proper Indonesian words, but they were super esoteric and never used.