I have worked as an English-Spanish Interpreter and Translator for two of the biggest companies in the US market, NetworkOmni Language Services and Pacific Interpreter.
It all started in November 2004 when I joined NetworkOmni without any previous experience; within a year, I was promoted to Quality Assurance Associate, and shortly after, to Quality Assurance Trainer (Monitoring Interpreters and providing feedback on their performance; assessing applicant's linguistic skills and abilities to become over-the-phone interpreters; performing language assessments over the phone; training newly hired interpreters on how to handle Customer service scenarios [Level 2]; training selected interpreters on how to handle specialized calls [Level 1, medical, emergencies, legal and insurance], etc.). Sadly, the company had to shut down its center in Santo Domingo, D.R. due to the worldwide recession.
I was lucky enough to get into Pacific Interpreters as a MEDICAL interpreter (Providing English-Spanish over-the-phone interpretation services to a big number of clients, such as: UMass Memorial Medical Center, Mount Sinai Medical Center, Elmhurst Memorial Healthcare, Montefiore Medical Center, Stony Brook University Medical Center, among others), as they only hire professionals with proven experience who pass their strict selection process.
I attribute my success in the industry to my attention-to-detail dedication and my commitment to always improve myself.

PS.: I've been working as a translator, proofreader and editor for ProTranslating since march 2012.