I've been active since 2007. Most of my edits have been fixing grammatical errors. I have also added some information to articles on entomology and historical figures that I have expertise on.
I am disclosing a COI that I have about a couple of articles that I'm working on: I'm working on creating articles about Derek Cabrera and DSRP. Several years ago, I worked for/with Derek Cabrera. However, I believe that his contributions to the fields of education and systems thinking merit inclusion in wikipedia, and, as there appear to be a very limited number of editors with subject expertise in this area, I believe that I am an appropriate person to write these articles and that I can do so while maintaining neutrality.