An internal recruiter emailed me for a job position. This opportunity looked pretty good and I aced the on-site interview, however, the interviewer said the project he planned on hiring me for got pushed back until late March. He did say however that he would keep me updated as new projects come along all the time and that he wanted me to let him know if anything changed.
I had continued interviewing with other places, one of which was through an external recruiter. I passed the technical and they wanted an on-site interview with me. I believe that I'm in the final round of interviews for them.
Should I let the internal recruiter know that I am likely doing the final interview at another company soon or should I wait until something more solid shows up?
My fears are that they offer me the job in that interview and that I don't end up letting the internal recruiter know early enough to make a potential offer. I'm heavily considering both places and it's not a matter of whoever makes the first offer. There are technically no guarantees that I get anything from either company at this point, so this is all just speculation. However, the evidence seems very favorable from the internal recruiter and pretty favorable from the external recruiter.
Update: I didn't message the internal recruiter at all, but he got back to me and told me that I was being considered for a couple of projects that came in today.
Edit: I believe this case is different from the similar question because this question is specifically asking about telling another recruiter about another offer that isn't necessarily on the table yet, just predicted to be.