Residence status

Hi,

I have a question related to residence status for tax purposes:

1. Stayed in India (as a ROR) from April 2008 till 5th March 2018. 

2. Left India on March 6th 2018 and stayed in UK untill 30th June 2018. (no job in UK)

3. Left UK on 1st July 2018 and stayed in USA  since then (started job on 22nd Oct. 2018) and will be in USA for indefinite period.

Can this person be considered as a NRI for tax purposes? What if, he had not got job, would he still be considered as a NRI?

Thank you very much.