Moonlighting is working in addition to a regular full-time job, usually after-hours. Use this tag as a generic "Freelancing while employed" tag.
moonlighting: verb
/ˈmuːnlaɪtɪŋ/
To work at an additional job after one's regular, full-time employment, as at night.
Moonlighting is freelancing done in addition to a regular full-time job, with or without telling your (full-time) employer, and usually after-hours.
Moonlighting generally occurs when an employer is under-paying someone, or their circumstances change and they have to work extra hours.
It can also occur if a person wants to develop their skills (or a different set of skills) away from their company while maintaining a steady income.
Use this tag as a generic "Freelancing while employed" tag.