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Refinery Sampler Jobs in California (NOW HIRING)

Refinery Chemist

El Segundo, CA · On-site

$91K - $180K/yr

This role is responsible for supporting laboratory test methods, troubleshooting analytical instrumentation, interpreting refinery sample data, maintaining quality assurance practices, and partnering ...

Weighmaster

Bakersfield, CA · On-site

$23.54/hr

This role will ensure accurate recording of weights, collect product samples, and ensure compliance with refinery and regulatory requirements. Weighmasters perform significant outdoor work, interact ...

New

Responsible for inspection and sampling work performed in the field, completion of all necessary ... Must be able to work in refineries, terminals, and on-board marine vessels as necessary. * Must ...

Lab Technician

Martinez, CA · On-site

$27 - $30/hr

Analyze process samples and final products per standard operating procedures in a timely manner to accommodate the needs of the refinery. * Verify all data before reporting information to verify ...

Own the development and optimization of nucleic acid-based assays and sample-preparation workflows. * Build and refine methods for lysis, nucleic acid extraction, purification, concentration ...

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Showing results 1-20

Refinery Sampler information

See California salary details

$5

$23

$61

How much do refinery sampler jobs pay per hour?

As of Aug 15, 2026, the average hourly pay for refinery sampler in California is $23.58, according to ZipRecruiter salary data. Most workers in this role earn between $17.07 and $20.62 per hour, depending on experience, location, and employer.

What is the difference between Refinery Sampler vs Petroleum Laboratory Technician?

AspectRefinery SamplerPetroleum Laboratory Technician
CertificationsSampling certifications, safety trainingLab safety, analytical certifications
Work EnvironmentRefinery sites, field samplingLaboratories, testing facilities
Job FocusCollecting samples from refineriesAnalyzing samples in labs
Industry UsageCommon in refining operationsCommon in quality control labs

Refinery Samplers primarily focus on collecting physical samples directly from refinery processes, often working in the field. Petroleum Laboratory Technicians analyze those samples in lab settings, performing tests to ensure quality and compliance. While both roles require safety training and industry-specific certifications, their work environments and daily tasks differ significantly, with samplers working on-site and technicians working in labs.

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

To thrive as a Refinery Sampler, you need knowledge of sampling procedures, attention to detail, and a high school diploma or equivalent, often accompanied by safety certifications. Familiarity with laboratory equipment, hazardous materials handling, and digital data entry systems is typically required. Strong observational skills, reliability, and effective communication help ensure accurate reporting and teamwork. These skills are crucial for maintaining safety standards, ensuring product quality, and supporting efficient refinery operations.

What are some common challenges a refinery sampler might face during sample collection, and how can they be addressed?

Refinery Samplers often work in environments where accuracy and safety are paramount. Challenges include handling hazardous materials, working in extreme temperatures, and ensuring samples are not contaminated. To address these, samplers should strictly adhere to safety protocols, use proper personal protective equipment, and follow standardized collection procedures. Regular training and clear communication with the operations and laboratory teams are also key to overcoming these obstacles and ensuring reliable results.

What is a refinery sampler?

Refinery samplers are professionals responsible for collecting samples of raw materials, intermediate products, and finished products at oil refineries or chemical plants. Their main objective is to ensure that samples are collected safely and accurately for laboratory analysis, which helps monitor product quality and process efficiency. Refinery samplers must follow strict safety and sampling procedures to avoid contamination and maintain representative samples. They often work in hazardous environments and are trained to use specialized equipment. Their work is essential to compliance with industry standards and regulations.

What are popular job titles related to Refinery Sampler jobs in California?

For Refinery Sampler jobs in California, the most frequently searched job titles are:

What job categories do people searching Refinery Sampler jobs in California look for?

The top searched job categories for Refinery Sampler jobs in California are:

What cities in California are hiring for Refinery Sampler jobs?

Cities in California with the most Refinery Sampler job openings:

Infographic showing various Refinery Sampler job openings in California as of August 2026, with employment types broken down into 100% Full Time. Highlights an 100% In-person job distribution, with an average salary of $49,053 per year, or $23.6 per hour.

Refinery Chemist

Chevron

El Segundo, CA • On-site

$91K - $180K/yr

Full-time

Medical, Retirement

This job post has expired today. Applications are no longer accepted.


Chevron rating

6.1

Company rating: 6.1 out of 10

Based on 218 frontline employees who took The Breakroom Quiz

69th of 86 rated oil and gas companies


Job description

Total Number of Openings

1Includes quality control inspections, chemicaltesting in support of production operations processes at the plants, refineries.

Chevron is accepting online applications for the position of Refinery Chemist located in El Segundo, California, through August 7th, at 11:59 p.m.

The Refining Chemist serves as a technical resource for refinery laboratory operations, providing analytical chemistry expertise to support safe, reliable, and compliant operations. This role is responsible for supporting laboratory test methods, troubleshooting analytical instrumentation, interpreting refinery sample data, maintaining quality assurance practices, and partnering with Operations, Technical, Maintenance, Environmental, and other stakeholders to resolve process, product quality, and compliance issues.

Responsibilities for this position may include, but are not limited to:

  • Conduct, support, and interpret chemical and physical testing of crude oil, intermediate process streams, finished petroleum products, water, solvents, and other refinery samples using approved laboratory procedures.

  • Monitor test results for compliance with product specifications, operating targets, environmental requirements, and applicable regulatory or industry standards.

  • Provide technical support for laboratory quality assurance and quality control programs, including statistical quality control review, proficiency testing, calibration records, control sample performance, method validation, and audit support.

  • Troubleshoot, maintain, verify, and improve laboratory instrumentation and methods to support reliable data generation and timely sample turnaround.

  • Develop, review, and update laboratory procedures, work instructions, training materials, and method documentation to ensure consistent execution and knowledge transfer.

  • Partner with Operations, Technical, Maintenance, Environmental, and corporate technical resources to investigate process discrepancies, product quality concerns, analytical outliers, and non-routine testing needs.

  • Support method development, instrument selection, equipment procurement, commissioning, and continuous improvement projects that improve laboratory reliability, efficiency, safety, and compliance.

  • Use laboratory information management systems, spreadsheets, and other data tools to document, analyze, trend, and communicate test results and recommendations.

Required Qualifications:

  • Bachelor's degree in chemistry or related science field with significant college-level chemistry coursework.

  • Valid driver's license.

Preferred Qualifications:

  • Bachelor's degree in chemistry preferred.

  • Laboratory experience in a refinery, petrochemical, petroleum testing, or industrial analytical laboratory environment.

  • Experience with laboratory quality systems, including ASTM D6299 statistical quality control, proficiency testing, method validation, auditing, corrective actions, and documentation control.

  • Experience operating, maintaining, and troubleshooting refinery laboratory instrumentation such as GC, ICP, AA, XRF, SFC, IC, FTIR, Raman, titrators, elemental analyzers, and LIMS-connected systems.

  • Knowledge of refining processes, refinery product slates, petroleum chemistry, ASTM methods and how laboratory data supports process optimization, troubleshooting, and product certification.

  • Demonstrated ability to prioritize work, solve practical problems, support investigations, and adapt to changing refinery needs.

Regulatory Disclosure for US Positions:

  • The compensation and reference to benefits for this role is listed on this posting in compliance with applicable law.

  • Please note that the compensation and benefits listed below are only applicable for U.S. payroll offers.

  • The anticipated salary range for this position is $91,500 - $180,500. The selected candidate's compensation will be determined based on their skills, experience, and qualifications.

  • Chevron offers competitive compensation and benefits programs which includes, but is not limited to, variable pay, health care coverage, retirement plan, protection coverage, time off and leave programs, training and development opportunities and a range of allowances connected to specific work situations. Details are available at http://hr2.chevron.com/.

IMPORTANT NOTE:

As part of the application process, you will be required to take an assessment that measures aptitude and work styles. We recommend you allow approx.45 minutesto complete the assessment in one sitting. If you need to exit, your progress will be saved.

You will be immediately directed to the testing portal upon submittal of your application, at which point you will have72hours (about3days)to complete the on-line assessment.

Once complete, your assessment score will be valid for180 days. Should you re-apply for another Job Requisition within this timeframe that includes the Lab Assessment,you will be required to complete the application process and then click on the assessment link. This will resubmit your previous results.

Relocation Options:

Relocation benefits will be considered.

International Considerations:

Expatriate assignments will not be considered

U.S. Regulatory notice:

Chevron is an Equal Opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religious creed, sex (including pregnancy), sexual orientation, gender identity, gender expression, national origin or ancestry, age, mental or physical disability, medical condition, reproductive health decision-making, military or veteran status, political preference, marital status, citizenship, genetic information or other characteristics protected by applicable law.

We are committed to providing reasonable accommodations for qualified individuals with disabilities. If you need assistance or an accommodation, please email us at emplymnt@chevron.com.

Chevron participates in E-Verify in certain locations as required by law.


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About Chevron

Sourced by ZipRecruiter

Chevron is one of the world's leading integrated energy companies. We believe affordable, reliable and ever-cleaner energy is essential to achieving a more prosperous and sustainable world. Chevron produces crude oil and natural gas; manufactures transportation fuels, lubricants, petrochemicals and additives; and develops technologies that enhance our business and the industry. We are focused on lowering the carbon intensity in our operations and seeking to grow lower carbon businesses along with our traditional business lines. More information about Chevron is available at www.chevron.com.

Industry

Oil and coal products manufacturing, civic and social organizations and oil and gas extraction

Company size

10,000+ Employees

Headquarters location

San Ramon, CA, US

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