Mordin moved here about six months ago, looking exactly for this kind of work. Honestly, he probably went into the Dead District looking for a facility to use as a clinic and found LSR (just figured out the pun), walked in, and said something along the lines of "Here to apply for job as fellow doctor. Don't need much pay. Interested?

I figure out they'll find each other soon enough. Mordin has an extremely distinct speaking style.