Pros
You get interviewed by at least 5 persons of your will-be office prior to get an offer.
Cons
The management has no idea of what it is doing. A former IT technical consultant don't always make a good manager. You have to be skilled in office politics to survive there. Gossip, rumors, backstabbing are normal and tolerated behaviours. You have to make friends with the management if you want to have a chance to be listened. How many hours spent on useless meeting, the best one being a 2-hours-meeting on the number of cups needed per month for the water fountain ... (true story). Better getting and keeping Belgian staff (who actually knows Belgian law & market) rather than "importing" Spanish expats ... You'll hear a number of interesting stories about the company like company university, employee owning shares ... Forget them ! You won't hear about them after the interview ! Last but not least: the famous "everis model". Everyone talks about it, every Spanish employee is so proud & complient about it, it's like the Holy book of the company. True fact: you have to comply with it even if you have never had a chance to get it explained. Run !