回複：pls help: questions on job change during I485 pending

If your 140 is EB11 or NIW, you can change to any job in your field. If yours is an employer sponshored 140, you need to find a similar job.CIS compares job code and deion to make a decision. In your case, assuming yours being an employer sponshored 140, then research associate or senior research worker are fine. I are not sure senior technican. However, if the job deion is similar, it will be fine.