I worked for Interlink at Al Yamamah U, in the PYP program for about 2 months. I was a direct hire.
Good and bad:
1) The salary is generally lower than most programming of a similar nature in KSA, they do nickel and dime you a bit, but not too bad.
2) The Riyadh accommodations are very nice!
3) The program's quality, in terms of instructional delivery, is far better than any other I know of--you will be able to take a certain degree of pride in your work.
4) The students are not running the school as seems to be the case in many other programs.
5) The teaching team was generally pleasant, with one or two exceptions (what you gonna do, huh?)
6) Dr. Nebila is knowledgeable, and supports research-based pedagogy, provides trainings, and supports teachers engaged in enrichment activities (although we can be pretty sure she doesn't like me anymore, since I quit after only 2 months,
7) The admin staff is cool
The management team (Coordinators, plus Program Manager) is not cool. I found that they possessed a poor sense of professionalism, behaved like they just "got a brand new bag," so to speak, and were at the formative stages of creating a police-like environment (fingerprint and face recognition at morning and afternoon check-in and out--where are you going to go???? The bus takes you to and fro, and the U is in the middle of nowhere!) While most teachers seemed fairly level-headed, the management team came across as flakes, or perhaps people you would be nervous about leaving your pet with while on holiday. They do try to withhold your passport, which is standard on an iqama, but not allowed for business visas, but they want to keep you imprisoned either way. If you haven't an iqama, and they take your passport, you are not able to send money out, or do anything that requires ID, so it is a problem. They give you a photo copy of a letter in lieu of your passport if you are on a business visa. Nebila has every faith in these people, I imagine over time, they will reveal themselves as far less than what she could actually have in their place. Maybe some management training, including some basics in professional etiquette, and ethics (which may be over their heads) would help solve the problems on the mid-level management issues. Teachers typically come to management with no real training, so I understand, but it is difficult to work under nonetheless.
9) The facilities are lovely at the U.
10) You will fit in fine, if you are into the pseudo sciences, read junk, like to play psychologist and irrationally analyze and draw the most ridiculous conclusions possible about every action and speech act of people around you, don't mind being lied to and manipulated by people from English-speaking countries about things that really are not important enough to lie about--it seems just to be an exercise of wee power, and are generally submissive about having some goofus with a little newfound power try to run your life for you, invade your privacy, and completely objectify you.
11) The teaching team is very diverse, with people from nearly everywhere, all ages (some way past 58 too), all were hardworking that I could see.
12) They do not offer international deposit of salary, so if you do not get an iqama, for whatever the reason (and there are those who have good reason) then you are stuck with large sums of cash and no way to get it out of the country.