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Laboratory Technician

Job in Carson, Los Angeles County, California, 90749, USA
Listing for: Marathon Petroleum Corporation
Full Time position
Listed on 2026-06-19
Job specializations:
  • Quality Assurance - QA/QC
  • Science
    Lab Tech / Assistant
Salary/Wage Range or Industry Benchmark: 60000 - 80000 USD Yearly USD 60000.00 80000.00 YEAR
Job Description & How to Apply Below

Key Responsibilities

  • Performs analytical testing with strict adherence to standard operating procedures, generating highly accurate and timely results.
  • Conducts routine tests, measurements analyses, and preparations in accordance with established methods and procedures.
  • Operates laboratory equipment as part of testing requirements.
  • Records results of the tests and arranges data for review and analysis.
  • Completes routine calculations and reports.
  • Inputs, submits and receives computer data.
  • Maintains computer databases, runs programs and enters sample and test information into a LIMS.
  • Coordinates chain of custody forms.
  • Maintains documentation that samples are received in proper containers and at the required temperature, within the appropriate holding time.
  • Performs calibration and maintenance of equipment.
Other Responsibilities
  • Understands and adheres to all written analytical and safety Standard Operating Procedures established by MPC.
  • Participate actively in safety meetings, including surfacing hazards/concerns and suggestions for improvement.
  • Dispose of all samples per site procedures.
  • Enter sample results accurately into Laboratory Information Systems (LIMS) as soon as practical and special sample results as soon as obtained.
  • Communicates promptly with internal customers.
  • Conduct routine and non-routine testing on samples used to certify products, prove regulatory compliance, and control the process.
  • Makes proper relief in work area by communicating pending analyses, instrument problems, SQC concerns, operational issues affecting the lab, and off-spec results.
  • Reads e‑mail, area notes, and applicable orders as appropriate.
  • Operates a motor vehicle in the refinery in accordance with MPC Motor Vehicle Safety and Driving Standard and site requirements.
  • Operates fume hoods and hood sashes per MPC standard.
  • Completes all required training and CBT modules on time.
  • Keeps work areas clean and orderly to maintain a high level of safety and efficiency.
  • Effectively validates results generated prior to reporting.
  • Completes corrective action forms for out‑of‑control points.
  • Attempts to resolve SQC alarms according to skill level and communicates to appropriate chemist and/or supervisor.
  • Inform lab management personnel when lab supplies are running low.
  • Performs routine maintenance and other lab duties as assigned.
  • Records and maintains accurate records of analyses.
  • Enters test results into the Laboratory Information Management System (LIMS).
  • Accurately communicates to the Lab Supervisor any unusual observations made during the analysis of samples.
  • Assists the Chemists and Lab Supervisors in the development of new test procedures as needed.
  • Provides training for new Lab Techs.
  • Performs monitoring checks and SQC data to ensure instrument accuracy at the beginning of each shift.
  • Performs any required re‑testing and communicates off‑specification product results immediately to the Lab Supervisor.
  • Practices site safety and adheres to environmental standards.
  • Participates in lab safety audits.
  • Maintains consistent and excellent housekeeping habits.
  • Supports all internal and external laboratory audits.
  • Understands proper labeling and hazard communication procedures.
Requirements & Preferences
  • Bachelor’s Degree with 16 hours of college‑level chemistry required.
  • Two (2) years or more of experience required.
  • Chemistry Degree preferred.
  • Experience in QC/production laboratory in petroleum refining or petrochemical industry preferred.
Knowledge, Skills, and Abilities
  • Familiarity with ASTM laboratory test methods for petroleum analyses.
  • Effective communication, written and verbal.
  • Familiarity with the oil refining process.
  • Ability to use a personal computer required, including familiarity with word processing, spreadsheet, email and database applications.
  • Ability to respond to changing business requirements and priorities.
  • Familiarity with Laboratory Information Systems (LIMS).
  • Must be able to work a rotating 12‑hour schedule, which includes nights, weekends, holidays and vacation coverage for peers.
  • Operates as an effective member of a laboratory team.
Pay & Benefits

Starting hourly pay for this position is between $41.41 - $55.73 and is typically based on…

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