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Weekend Testing Jobs in California (NOW HIRING)

Willingness to work evenings and/or weekends to support critical mission milestones * Ability to lift up to 25lbs unassisted Pay Range: * Manager, Environmental Testing: $140,000 - $200,000 * Senior ...

Be Seen First

... testing records and controlled documentation • Follow company safety procedures and maintain clean, organized work areas • Support production schedules including nights, weekends, and overtime as ...

Be Seen First

... testing records and controlled documentation • Follow company safety procedures and maintain clean, organized work areas • Support production schedules including nights, weekends, and overtime as ...

Be Seen First

... testing records and controlled documentation • Follow company safety procedures and maintain clean, organized work areas • Support production schedules including nights, weekends, and overtime as ...

This role focuses on safety, vehicle readiness, and testing while representing the company ... Sunday-Thursday Bonus Pay: * +7.5% weekday overnight * +10% weekend overnight Requirements * Strong ...

This role focuses on safety, vehicle readiness, and testing while representing the company ... Sunday-Thursday Bonus Pay: * +7.5% weekday overnight * +10% weekend overnight Requirements * Strong ...

Candidate may be asked to complete testing at night or over the weekend. Familiar with both Waterfall and Agile methodologies. Experience with SEI added bonus. Needs to be able to understand the ...

Willingness to work evenings and/or weekends to support critical mission milestones * Ability to lift up to 25lbs unassisted Pay Range: * Manager, Environmental Testing: $140,000 - $200,000 * Senior ...

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Weekend Testing information

What are the key skills and qualifications needed to thrive as a Software Tester, and why are they important?

To thrive as a Software Tester, you need strong analytical skills, attention to detail, and a solid understanding of software development and testing methodologies, typically supported by a degree in computer science or a related field. Familiarity with testing tools like Selenium, JIRA, and knowledge of automation scripts or certifications such as ISTQB are often required. Excellent problem-solving abilities, communication skills, and adaptability make someone stand out by enabling effective teamwork and clear reporting of issues. These skills and qualifications ensure software quality, reduce defects, and support smooth project delivery.

What are some common challenges faced by Weekend Testing professionals, and how can they effectively manage their workload?

Weekend Testing professionals often face the challenge of balancing tight testing deadlines with limited resources, as many teams operate with smaller staff on weekends. Additionally, they may need to rapidly identify and communicate critical issues to development teams who may not be immediately available. Effective workload management involves clear prioritization of test cases, using collaborative tools for asynchronous communication, and preparing comprehensive handover notes to ensure smooth transitions. Building strong communication channels with weekday teams and utilizing automated testing processes can also help streamline weekend test cycles.

What is Weekend Testing?

Weekend Testing is a community-driven initiative where software testers and quality assurance professionals come together online during weekends to practice testing skills, discuss industry topics, and collaboratively solve testing challenges. These sessions are typically informal and open to anyone interested in software testing, regardless of experience level. The main goal is experiential learning through hands-on activities, knowledge sharing, and networking with other testers across the globe. Weekend Testing provides a supportive environment to improve testing techniques, learn new tools, and grow professionally.

What is the difference between Weekend Testing vs Software Tester?

AspectWeekend TestingSoftware Tester
CertificationsOptional, often includes ISTQB or similarOften requires ISTQB or equivalent certifications
Work EnvironmentPrimarily project-based, flexible hours, often remoteOffice or remote, standard full-time hours
Industry UsageUsed in software development projects, especially for testing phasesCore role in software development lifecycle across industries
Search & Comparison IntentFocuses on testing during weekends, flexible scheduleBroader testing responsibilities, full-time role

Weekend Testing is a specialized testing role often performed during weekends with flexible hours, typically on a project basis. Software Testers have a broader, full-time role in software quality assurance, often requiring certifications like ISTQB. While both roles involve testing software, Weekend Testing emphasizes flexible, part-time work, whereas Software Testers usually work regular hours in a permanent position.

What are the most commonly searched types of Testing jobs in California? The most popular types of Testing jobs in California are:
What cities in California are hiring for Weekend Testing jobs? Cities in California with the most Weekend Testing job openings:
Infographic showing various Weekend Testing job openings in California as of May 2026, with employment types broken down into 1% Locum Tenens, 1% As Needed, 81% Full Time, 15% Part Time, and 2% Contract. Highlights an 87% Physical, 2% Hybrid, and 11% Remote job distribution.

Laboratory Technician I - LCMS Prep, (SU - TH, 7PM - 3:30AM Shift) Eurofins Environment Testing, Wes

Eurofins USA Environment Testing

West Sacramento, CA

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Posted 3 days ago


Job description

Company Description

Eurofins Scientific is a network of independent companies providing a unique range of analytical testing services to clients across multiple industries, to make life and our environment safer, healthier and more sustainable. From the food you eat, to the water you drink, to the medicines you rely on, Eurofins laboratories work to ensure the products they supply are safe, their ingredients are authentic, and labelling is accurate.


Eurofins is dedicated to delivering testing services that contribute to the health and safety of society and the planet, and to its corporate responsibility to protect the environment and ensure diversity, equity, and inclusion across the entire network of Eurofins companies.


With over 50 laboratories and more than 40 service centers nationwide, Eurofins Environment Testing provides full-service environmental analysis across all 50 states. Our network supports public and private clients—including DoD, DOE, and municipalities—through robust logistics and continuous investment in people, technology, and infrastructure.


We offer comprehensive testing for air, water, soil, sediment, tissue, and waste, covering a wide range of analytes including PFAS, metals, VOCs/SVOCs, dioxins/furans, radiochemicals, and more.

Job Description

Eurofins Environment Testing Northern California is seeking a Laboratory Technician I for our West Sacramento location.

The Laboratory Technician, using general laboratory methods, techniques, equipment, and instrumentation in compliance with Eurofins’ Quality Assurance programs and SOP’s, supports laboratory operations through general maintenance of laboratory and supply storage areas, equipment, instruments, and supplies.

Essential Duties and Responsibilities

Retrieves samples from Sample Control for analysis and maintains chain of custody.

Performs sample preparation which may include, but is not limited to, a combination of the following methods:

  • Aliquot samples
  • Spike and trace samples
  • Prepare reagents/acids/bases
  • Bottle samples
  • Prepare concentrations
  • Separation
  • Sonication
  • Liquid rack set up

Resolves discrepancies and anomalies to ensure samples are properly labeled.

Prepares general laboratory paperwork such as recording analysis results, tracking samples, bench sheets, and laboratory logbooks.

Washes laboratory glassware to prepare for next day’s samples.

Responsible for performing job functions within Eurofins Environment Testing America’s Environmental Health & Safety and Quality Assurance standards.

Maintains housekeeping for work area.

Preforms daily calibration of pipettes and balances.

Properly disposes of hazardous and non-hazardous waste and recycling.

Secondary Duties

Stocks laboratory supplies.

Cleans work area(s) to maintain a safe working environment.

Assists other laboratory areas as needed

Qualifications
  • High school diploma or equivalent
  • High school Chemistry coursework, basic laboratory experience
  • Experience working in a fast-paced, production environment
  • Authorization to work in the United States indefinitely without restriction or sponsorship
  • Professional working proficiency in English is a requirement, including the ability to read, write and speak in English

Additional Information

Compensation range: $19-$21 per hour depending on experience and qualifications. 

Position is full-time, non-exempt and is eligible for overtime pay.

Candidates must be able to work the following shifts:

  • Sunday - Thursday, 7PM - 3:30AM with possible overtime and weekends as needed.
  • The initial first weeks of training will be Monday thru Friday, 9am - 5pm.

Eurofins Environment Testing (USA) provides a compensation range for informational purposes, the actual base compensation may vary based upon, but not limited to, relevant experience and skill set, base compensation of internal peers, business sector, and geographic location.

As a Eurofins employee, you will become part of a company that has received national recognition as a great place to work.  We offer excellent full-time benefits including comprehensive medical coverage, life and disability insurance, 401(k) with company match, paid holidays, paid time off, and dental and vision options.

We support your development! Do you feel you don’t match 100% of the requirements? Don’t hesitate to apply anyway! Eurofins companies are committed to supporting your career development.

We embrace diversity! Eurofins network of companies believe in strength and innovation through diversity, being an Equal Opportunity Employer. We prohibit discrimination against employees or applications based on gender identity and/or expression, race, nationality, age, religion, sexual orientation, disability, and everything else that makes employees of Eurofins companies unique.

Sustainability matters to us! At Eurofins, we believe sustainability is at the heart of everything we do. Guided by our vision to be the Global Leader in “Testing for Life,” our mission to contribute to a healthier and safer world, and our core values, we are building a strong foundation for Environmental, Social, and Governance (ESG) initiatives. Eurofins’ commitment to sustainability begins within our own companies through a shared responsibility to people and the planet. With climate change posing an imminent threat, Eurofins and its many companies recognize their duty to proactively reduce or offset the environmental impact of essential operations while also helping our clients do the same—serving as a true ESG Enabler.

Find out more in our career page: https://careers.eurofins.com/

Company description: Eurofins Scientific is an international life sciences company, providing a unique range of analytical testing services to clients across multiple industries, to make life and our environment safer, healthier and more sustainable. From the food you eat, to the water you drink, to the medicines you rely on, Eurofins laboratories work with the biggest companies in the world to ensure the products they supply are safe, their ingredients are authentic and labelling is accurate.

The Eurofins network of companies is the global leader in food, environment, pharmaceutical and cosmetic product testing and in discovery pharmacology, forensics, advanced material sciences and agroscience contract research services. It is one of the market leaders in certain testing and laboratory services for genomics, discovery pharmacology, forensics, advanced material sciences and in the support of clinical studies, as well as having an emerging global presence in Contract Development and Manufacturing Organisations. It also has a rapidly developing presence in highly specialised and molecular clinical diagnostic testing and in-vitro diagnostic products.

In over 35 years, Eurofins has grown from one laboratory in Nantes, France to 61,000 staff across a decentralised and entrepreneurial network of ca. 900 laboratories in 61 countries. Eurofins companies offer a portfolio of over 200,000 analytical methods to evaluate the safety, identity, composition, authenticity, origin, traceability and purity of biological substances and products.

In 2025, Eurofins generated total revenues of EUR 7.296 billion, and has been among the best performing stocks in Europe over the past 20 years.

Eurofins USA Environment Testing is a Disabled and Veteran Equal Employment Opportunity employer.