YOU SAID:

This is my last week with this job

INTO JAPANESE

これはこの仕事での最後の週です

BACK INTO ENGLISH

This is the last week in this job

INTO JAPANESE

これはこの仕事の最後の週です

BACK INTO ENGLISH

This is the last week of this job

INTO JAPANESE

これはこの仕事の最後の週です

BACK INTO ENGLISH

This is the last week of this job