халтурить(a mechanic who buys and sells cars on the side. OALD. He makes a little money on the side by cleaning windows in his spare time.CALD. The band's lead singer has been making solo appearances on the side. MED Alexander Demidov)
промышлять(In fact, much of the Internet thought he sounded like a гопник, one of those squatting, sunflower-seed-spitting, good ole boys who do manual labor and a bit of robbery on the side.4uzhoj)