在移民前,我在中国是做工程师的,英语怎么说?

I was an engineer in China before the immigration.
I used to be an engineer in China before I moved to this country.
Before I moved here, I was an engineer in China.
I worked as an engineer in China before the immigration.
很多种说法, 意思都能表达清楚, 希望回答对你有帮助!

I worked as an engineer before my immigration to your country.

i have been an engineer in China before immigration.

I have been a successful engineer before immigrating to this country.

i worked as an engineer before my immigration.