How can I get a felony conviction removed from my record?

Ok, I am from CA. I have a felony in my record. Its for Grand Theft. Although I did not steal anything, I was aware of such action(s), therefore I was also charged with Grand Theft. he items at hand were worth probably no more than $500. I believe in the State of CA that is considered a felony. Either way. I was given 3 years probation. It was my first offense. My question is, how can I get it removed, how long do I wait to request to have it removed? This happened a little over a year ago. Would my current situation help me with the matter. The fact that I have not ever received a traffic citation, I have not violated probation. I did community service and volunteered with Alcoholics and Narcotics Anonymous. The fact that I will receive my Bachelors in 6 months. And that I want to pursue a masters. I know only a year has ped since the instance, but I want to know of what I can do, and when can I do it. It really affects when applying for a job. I know its my own fault, I made my decisions, but I have not worked since that happened. It always come down to the background check. I probably got 3 jobs by not informing employers of my felony. And no one took a chance with me when I mentioned it. But it didnt matter because once the employers told me they would love to hire me, then I told them about the conviction, and they said that it would be a problem. People don't understand why people commit repeated crimes, probably because there is no other alternatives. Can't understand the mind of a felon, till you become one.