You certainly can, however, if this work is going to be used for the benefit of any business, or even a non-profit organization, the FAA requires that the drone pilot be Part 107 certified. You can learn more about these rules here. The FAA has fined drone pilots, and importantly, those business that use them, for violating these rules. The businesses have typically been fined 10X what the pilots have been fined, up to ~$11,000 per flight. (A typical drone job will require several or many flights raising the financial risk.)
Additionally, Middle Tennessee Aerial Imaging maintains a $1 million liability policy for any drone related incidents.