INTERNSHIP DETAILS

Harvest Lab Intern

CompanyDuckhorn Wine Company
LocationNapa
Work ModeOn Site
PostedFebruary 18, 2026
Internship Information
Core Responsibilities
This seasonal intern position is responsible for daily fermentation monitoring, evaluating sensory characteristics, and performing required wine analysis such as Brix, TA, and pH. The role also requires preparing solutions, maintaining equipment, supporting cellar tasks, and accurately tracking data using specified software.
Internship Type
seasonal full time
Salary Range
$20 - $23
Company Size
391
Visa Sponsorship
No
Language
English
Working Hours
40 hours
Apply Now →

You'll be redirected to
the company's application page

About The Company
By following this page, you represent that you are over the age of 21. © The Duckhorn Portfolio, St. Helena, CA. Please enjoy our wines responsibly. The Duckhorn Portfolio is North America’s premier luxury wine company, with eleven wineries, ten state-of-the-art winemaking facilities, five tasting rooms and over 2,200 coveted acres of vineyards spanning 37 Estate properties. Established in 1976, when vintners Dan and Margaret Duckhorn founded Napa Valley’s Duckhorn Vineyards, today, our portfolio features some of North America’s most revered wineries, including Duckhorn Vineyards, Decoy, Kosta Browne, Sonoma-Cutrer, Goldeneye, Calera, Greenwing, Paraduxx, Migration, Canvasback and Postmark. Sourcing grapes from our own Estate vineyards and fine growers in Napa Valley, Sonoma County, Anderson Valley, California’s North and Central coasts, Oregon and Washington State, we offer a curated and comprehensive portfolio of acclaimed luxury wines with price points ranging from $20 to $230 across more than 15 varietals. Our wines are available throughout the United States, on five continents, and in more than 50 countries around the world.
About the Role

The Duckhorn Portfolio is North America’s premier luxury wine company. We were established in 1976 by Dan and Margaret Duckhorn. Today, our portfolio features some of North America’s most revered wineries, including Decoy, Paraduxx, Goldeneye, Migration, Canvasback, Calera, Kosta Browne, Greenwing and Postmark. 

We seek a Seasonal Lab Intern to join the team at our south Napa production facility, for Duckhorn Vineyards. This role is responsible for fermentation monitoring, tank and barrel sampling, and wine analysis. It is expected that repeatable, accurate sampling and analyses are provided; and a positive work environment is maintained through active team contribution and open communication.

What we will ask you to do:

  • Monitors daily fermentation.
  • Evaluates and communicates sensory characteristics of fermentations to winemaking team.
  • Follows lab protocols to sample from tanks, barrels, and vineyards.
  • Performs analysis of grape and wine samples (Brix, TA, pH, alcohol, sulfur, etc.).
  • Prepares solutions, maintains chemicals, and calibrates equipment.
  • Supports cellar with additions and inoculations as needed.
  • Cleans and performs preventative maintenance of instruments and equipment.
  • Performs accurate data entry and tracking using Microsoft Excel and Innovint. 
  • Prepares trials and blends upon request.
  • Must be able to work a flexible schedule and work overtime, including weekends during peak harvest period.

 

What you will need:

  • Basic lab skills – including pipetting, titration, and ability to follow protocols
  • High school diploma required, bachelor’s degree in enology or science preferred.
  • Must have effective communication and interpersonal skills. 
  • Intermediate reading, writing, and math skills. 
  • Must have intermediate English communication skills, both written and verbal. 
  • Proficient in Microsoft Word and Excel. 
  • Dependability, independence, and initiative.
  • Ability to stand for long periods of time and lift up to 45 lbs.

 

 

What we will provide: 
•  The hourly range for this position is $20 - $23.
•  Discounts on wine and merchandise.
•  Sick time accrual.
•  A diverse team of coworkers that care about each other in a fun, exciting work environment.
•  A company that promotes from within, provides great training and development programs and opportunities.

Key Skills
Fermentation MonitoringSamplingWine AnalysisBrixTApHAlcoholSulfurProtocol FollowingSolution PreparationEquipment CalibrationData EntryMicrosoft ExcelInnovintTitrationCommunication Skills
Categories
Science & ResearchAgricultureManufacturingFood & BeverageEnvironmental & Sustainability
Benefits
Discounts on wine and merchandiseSick time accrual