You were born on Ganymede like many Belters, but lived your early life in a tiny ship hopping from rock to rock in the Belt, looking for mining opportunities. You’ve been at home with technology since childhood and displayed a knack for it, which your family encouraged to the best of their ability. You learned a great deal from online resources, downloads, and trial-and-error but, still, access to higher education was limited for a Belter kid like you.
Eventually, you ended up using your burgeoning skills to acquire the information you needed illegally. That brought attention from certain criminal elements who were happy to employ your skills, and you were fine with that until you worried about getting in too deep. Now you’re generally looking to stay legit and to find ways to cut your old ties with organized crime, or at least avoid their notice until you can.