A winemaker or vintner is a person engaged in winemaking. They are generally employed by wineries or , where their work includes:

• Cooperating with viticulturists
• Monitoring the maturity of grapes to ensure their quality and to determine the correct time for harvest
• Crushing and pressing grapes
• Monitoring the settling of juice and the fermentation of grape material
• Filtering the wine to remove remaining solids
• Testing the quality of wine by tasting
• Placing filtered wine in casks or tanks for storage and maturation
• Preparing plans for bottling wine once it has matured
• Making sure that quality is maintained when the wine is bottled