Hi, there! Some others chimed in already. We moved our BFI base to GEG, so BFI will now be an outstation with just a few routes and GEG will have the majority.
Currently, no BFI openings, but keep an eye out at www.ameriflight.com/careers.
We do have a BE99 Captain opening out of GEG, if interested: Captain Beech 99 Cargo Pilot - Careers At Ameriflight, LLC

Hope that helps!