Online coding jobs fall into two categories. The first focuses on medical billing, where you provide support for companies that submit documentation to insurance companies. The second category focuses on software, where you develop new programs, translate content into different languages, or analyze data for your employer. Online coding jobs usually focus on smaller projects that can last anywhere from days to weeks based on the needs of the client. A few online coding jobs are long-term projects, but these are relatively rare and not a good measure for the overall industry.