To export a job, navigate to the main Jobs screen by selecting Automation - Jobs
Locate the Job to Export and select Actions - Export Job
A pop-up will ask if you'd like to exclude non participating attributes - Select No
The file will be downloaded as a .json to your computer.
Tips
It is important to select "NO" in the prompt for "do you want to exclude non-participating attributes?" When you are exporting a job you want to make sure to keep all attributes from the job intact as there is a chance that the attribute may not be used in the job currently being exported, but will be used in a subsequent job in the series. If you exclude this attribute, when you import the subsequent job you will find yourself without this attribute.