YOU SAID:
Hello I work as an engineer
INTO JAPANESE
こんにちは私はエンジニアとして働いています
BACK INTO ENGLISH
Hi I am working as an engineer
INTO JAPANESE
こんにちは、私はエンジニアとして働いています
BACK INTO ENGLISH
Hi, I am working as an engineer
INTO JAPANESE
こんにちは、私はエンジニアとして働いています
BACK INTO ENGLISH
Hi, I am working as an engineer
That didn't even make that much sense in English.