I had a 1-year J1 visa with a 2-year waiver in 2013-2014, and worked in the USA. The program was funded by my home university. I am a Singapore citizen.
I have not gone back to the US until now (2017). However, now I have gotten the opportunity to work at a university. They are offering me a J1, with the possibility of conversion to F1 as a PhD student if things work out.
However, I am not sure if the 2-year waiver will apply for me now that this is the 2nd time. However, I did not go back the last time. Also, if I get the F1 visa and finish my master's/PhD and get an OTP, will the 2-year rule still apply then?