Silvia, I've just added two more changes to your text:
Hi, my name is Silvia Melo and I've been working as a Judicial Support Officer for the TJMG (Tribunal Judicial de Minas Gerais), based in Belo Horizonte, since 2011. The employees operate at this site covering the entire Minas Gerais State.
I work in a team responsible for dealing with all the judicial processes and associated issues. Since I started working *for this organization, there has been a 25% increase on the analysis of the judicial processes, filing 30% of the cases.
I've been developing new projects and assuring that my team effectively meet and resolve the demands.
Previously, I was employed as a psychologist for individuals and groups of EGFriends, where I had a great feedback from leaders and staff.
I believe that working with various people made me more aware of our market segment.
*To avoid word repetition.
**Sounds better like this.