Winemaking Intern
Rutherford, California
Job Summary

Essential Duties and Responsibilities:

  1. Laboratory Duties (60%):
  • Assist in obtaining samples requested from production staff
  • Experiment monitoring and report
  • Take samples of grapes, juice or wine as requested from bins, barrels, tanks, or bottles.
  • Run routine analysis based on requests, including but not limited to: Temperature, Brix, TA, pH, Malic acid, RS, CO2, O2, Density, VA, T&FSO2, modified Harbertson-Adams assay for grapes/wine with repeatability and accuracy
  • Record analysis accurately on paper and electronically
  • Check one’s own analysis numbers against previous analysis and repeat if necessary
  • Alert supervisor to any abnormal results or those that might risk wine quality
  • Taste wines with winemaking team
  • Monitor equipment, calibrate, notify supervisor if out of specifications
  • Make additions, sample tanks for QC as needed
  • Understand MSDS information sheets, hazardous material handling, and wear PPE
  • Respect all safety policies and procedures; insure correct operating status of safety equipment
  • Weigh, measure, using scale, volumetric pipettes or flasks, graduated cylinders
  • Monitor and record data for all white wine fermentations
  • Operating equipment to include: scale, centrifuge, spectrophotometer, water bath, titration, pH meter, aspirator, micro-pipette, UV-Vis spectrophotometer


  1. Viticulture (35%)
  • Collects vineyard samples and manages sample data.
  • Designs and executes an experimental plan for a few pre-determined areas of interest
  • Collects and records all the necessary data in all areas affecting the experiments
  • Presents the data in a logical and meaningful manner, with interpretations of results
  • Assists the vineyard team as necessary to ensure that the experiment parameters are met


  1. Cellar Duties (5%)
  • Assist the cellar staff by ensuring the procedures for experimental fermentations are followed
  • Cleaning and organization of equipment after use [added in to make cellar duties section longer]


Supervisory Responsibilities: None

Job Requirements:

Education/Experience: BS Degree in Oenology or related International equivalent; or up to three years related experience or training; or equivalent combination of education and experience

Knowledge, Skills & Abilities:  

  • Analytical Skills - Ability to use thinking and reasoning to solve a problem.
  • Autonomy - Ability to work independently with minimal supervision.
  • Communication, Oral - Ability to communicate effectively with others using the spoken word.
  • Creative - Ability to think in such a way as to produce a new concept or idea.
  • Deductive Reasoning - Ability to apply principles of logical or scientific thinking to a wide range of intellectual and practical problems.
  • Detail Oriented - Ability to pay attention to the minute details of a project or task.
  • Honesty / Integrity - Ability to be truthful and be seen as credible in the workplace.
  • Initiative - Ability to make decisions or take actions to solve a problem or reach a goal.
  • Reliability - The trait of being dependable and trustworthy.
  • Safety Awareness and Accountability - Ability to identify and correct conditions that affect employee safety, be responsible for personal safety and safety of others, adhere to company policies and procedures.


Physical Demands:

N (Not Applicable) - Activity is not applicable to this occupation

O (Occasionally) - Occupation requires this activity up to 33% of the time (0-2.5+hrs/day)

F (Frequently) - Occupation requires this activity from 33% - 66% of the time (2.5-5.5+ hrs/day)

C(Constantly) - Occupation requires this activity more than 66% of the time (5.5+ hrs/day)


Stand – O, Walk – O, Sit – O, Handling/Fingering – O, Reaching Outward – O, Reaching Above Shoulder – O, Climb – N, Crawl – N, Squat or Kneel –O, Bend – O, Working at the computer - O


10 lbs or Less, F

11 – 20 lbs, F

21 – 50 lbs, O

51 – 100 lbs, O

Over 100 lbs, N


12 lbs or Less, F

13-25 lbs, F

26-40 lbs, O

41-100 lbs, N


Other Physical Requirements

Vision (Near, Distance)

Sense of Sound (i.e. Machinery/tractor sounds)

Sense of Touch

Ability to wear Personal Protective Equipment (PPE) (Steel toe boots, safety glasses)


Work Environment: While performing the duties of this job, the employee is frequently exposed to wet and/or humid conditions, moving mechanical parts, and outside weather conditions.  The employee is occasionally exposed to high, precarious places; fumes or airborne particles; toxic or caustic chemicals; risk of electrical shock; and vibration.  The noise level in the work environment is frequently loud.  Employee works around dangerous, automatic machinery.



  • Valid U.S. Driver’s License and clean DMV record required (if applicable)
  • Forklift License or knowledge is a preferred but not essential
  • English and Spanish skills preferred (Bilingual)
  • Wine knowledge, Oenology and some Viticultural knowledge preferred
  • Computer skills, Excel, Winemaker’s Database, Filemaker Pro, Word
  • Must be able to lift and carry heavy objects of 40 pounds (1 case of wine)


Posted: February 22, 2021