Seasonal Sr. Lab Technician

E. & J. Gallo Winery•Modesto, CA

7d•Onsite

About The Position

As a Seasonal Senior Laboratory Technician, you’ll play a hands-on role in ensuring the quality, safety, and integrity of our wines and spirits during one of the most critical times of the year. Working in a dynamic laboratory environment, you’ll perform physical, microbiological, and chemical analyses that directly support winemaking, environmental monitoring, and product evaluation. Your work helps ensure that every product meets GALLO’s high standards for quality and compliance. In this role, you’ll operate and troubleshoot a wide range of laboratory instrumentation, interpret analytical data, and take action when results fall outside of specifications. You’ll collaborate closely with production and laboratory teams to investigate issues, support corrective actions, and improve laboratory practices. Your attention to detail and commitment to quality will be essential as you manage samples, maintain data integrity, and follow ISO 17025-compliant quality systems. You’ll also serve as a knowledgeable resource within the lab, supporting the training and onboarding of newer team members and providing guidance when supervisors are not available. This is an opportunity to build your technical expertise, contribute to continuous improvement, and make a meaningful impact during the harvest season while working independently and as part of a collaborative team.

Requirements

Bachelor's degree with a combined 20 college coursework units of chemistry, biology, and/or microbiology plus 2 years of chemistry/microbiology laboratory experience OR 2 Harvest Seasons at GALLO; OR High school diploma or State-issued equivalency certificate plus 6 years or 6 seasons of paid laboratory experience reflecting increasing levels of responsibilities; OR High school diploma or State-issued equivalency certificate plus 20 college coursework units of chemistry, biology, and/or microbiology plus 4 years of chemistry/microbiology laboratory experience OR 4 Harvest Seasons at GALLO.
Skilled in writing simple correspondence.
Skilled in the use of MS Word, Excel and PowerPoint.
Skilled in adding, subtracting, multiplying and dividing using whole numbers.
Required to maintain 3 shift availability (day, swing, and graveyard).
Required to work overtime when necessary.
Required to work weekends when necessary.
Required to be at least 21 years of age.
Required to lift and carry cases of product that can weigh up to 50 pounds.
Required to travel to company offices, sites, and/or meeting locations for onboarding, training, meetings, and events for development, department needs, and business delivery up to 5% of the time, with or without reasonable accommodation.
Required to be 18 years or older.

Responsibilities

Perform physical, microbiological, and chemical analyses that directly support winemaking, environmental monitoring, and product evaluation.
Operate and troubleshoot a wide range of laboratory instrumentation.
Interpret analytical data and take action when results fall outside of specifications.
Collaborate closely with production and laboratory teams to investigate issues, support corrective actions, and improve laboratory practices.
Manage samples and maintain data integrity.
Follow ISO 17025-compliant quality systems.
Support the training and onboarding of newer team members.
Provide guidance when supervisors are not available.