I'm a happy Swede that has a thing for playtesting (QA). I'm currently the Lead tester for Zombie Panic: Source but some other modifications that I have tested or am currently testing are NeoTokyo Source, Decadence & Fistful of frags.
Here is another ZPS developer story to give you insight as to what kind of challanges and tasks our developers might have to face in daily modding life.