Well, lets see:
which qualification you have to join the team?
Enough I suppose.
php, yes.
sql, basic enough to handle SMF queries and SMF table structure.
css, yes.
JavaScript, basic stuff.
What you have to do before join the team?
Nothing really, I started to provide support on the Spanish and English support boards, I was Support Helper of the Month for November 2010 and then keep on providing support, on February 2011 I was asked to join the team as a Support Specialist.
Before I was a member here I was doing English-Spanish translations and before that I maintained a Spanish The Smiths yahoo group, which BTW I still receive email notifications

You have any mod programmed?
I do have over 20 mods, some of them were made by other people however I do keep em all updated and with new features as well.
Your job?
In here? the same as any other Customizer.
In real life I'm a Human Resources Assistant for a small trading company.