Reasonably good company, but it entirely depends on your situation.
They are requiring that you live in or nearby Luxembourg. If you plan to commute, it will be hard on you. Luxembourg is not very good connected to the Passenger Airline Network and you will get no or limited tickets with Luxair, which ironically owns parts of Cargolux. Cannot depend on any ID90 tickets to get from/to work.
If you have family and kids, and want to play an active role as parent, you will probably be not happy. Trips are quite long, I believe now 12 days average. Not much choice between livestyle and money.
Money is not bad, rostering not very flexible. No bidding system, rather assigned by crew sheduling. If you are unlucky, they can make your life miserable....But bidding system on the horizon.....for 4 years now...still nothing.
Flying is professional and multicultural which makes it a very enjoyable environment. Equipment and routes are great.....but expect to be long away from home. Not everybody's thing...
Hope this helps