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Chemical Process Engineering Internship Jobs in California

Manager, Process Engineering

Martinez, CA · On-site

$121K - $216K/yr

Bachelor of Science degree in Chemical Engineering or equivalent Bachelor of Science degree that includes Chemistry/Biochemistry/molecular science coursework. * 7 Years of Process Engineering ...

Provide strategic leadership for a team of Nuclear, Chemical, Process and Mechanical Engineers, Designers, and Supply Chain Specialists, ensuring alignment with overall project goals. * Establish and ...

Provide strategic leadership for a team of Nuclear, Chemical, Process and Mechanical Engineers, Designers, and Supply Chain Specialists, ensuring alignment with overall project goals. * Establish and ...

Process Engineering Leader

Mojave, CA · On-site

$124K - $161K/yr

Qualifications * BS degree in Chemical Engineering, Process Engineering, Materials Engineering or related fields. Advanced degrees preferred. * 10+ years of work experience in chemical industry or ...

$73K - $136K/yr

Develops detailed process planning (EPI) for fabrication and inspection in compliance to contractual requirements. Applies engineering and quality procedures to support hardware and/or software ...

Process Engineering Leader

Mojave, CA

$124K - $161K/yr

Qualifications * BS degree in Chemical Engineering, Process Engineering, Materials Engineering or related fields. Advanced degrees preferred. * 10+ years of work experience in chemical industry or ...

Process Engineer II

Crockett, CA · On-site

$81K - $151K/yr

Five years of Chemical/Process Engineering experience desired; prior knowledge in Food industry or Consumer Product Goods is preferred * Previous work experience developing or assisting in the ...

Showing results 41-60

Chemical Process Engineering Internship information

What is the difference between Chemical Process Engineering Internship vs Chemical Process Engineer?

AspectChemical Process Engineering InternshipChemical Process Engineer
CredentialsUndergraduate or graduate student in chemical engineeringBachelor's or master's degree in chemical engineering
Work EnvironmentTemporary, educational setting, often in labs or plant sitesFull-time, professional environment in manufacturing or processing plants
ResponsibilitiesAssisting with projects, learning industry processes, supporting engineering teamsDesigning, optimizing, and overseeing chemical processes, ensuring safety and efficiency

The Chemical Process Engineering Internship is a temporary, educational role aimed at gaining industry experience, while a Chemical Process Engineer is a full-time professional responsible for designing and managing chemical processes. Internships provide foundational exposure, whereas engineers lead operational and process improvements.

Intern/Co-op - Refining Chemical Engineering Fall 2026

Martinez, CA

Marathon Petroleum Corporation
Oil and Gas Extraction • 10K+ employees

$32.92/hr

Part-time

Medical, Dental, Vision, Retirement, PTO

Re-posted 27 days ago


Key responsibilities

  • Familiarize with process equipment fundamentals and best practices in a refinery setting.

  • Work on projects related to refinery operations, process engineering calculations, and process improvements.

  • Assist in developing planning, blending, scheduling, and process models for refinery optimization.


Marathon Petroleum rating

6.1

Company rating: 6.1 out of 10

Based on 205 frontline employees who took The Breakroom Quiz

68th of 87 rated oil and gas companies


Job description

An exciting career awaits you

At MPC, we're committed to being a great place to work - one that welcomes new ideas, encourages diverse perspectives, develops our people, and fosters a collaborative team environment.

Responsibilities:

As a Chemical Engineer at a Marathon refinery, you can expect to become familiar with process equipment fundamentals and best practices, build critical thinking skills, and gain an understanding of how all engineering disciplines work together as a cohesive team. You will also gain knowledge of various aspects of a refinery by working with a team of professionals who run a specific portion of the refining process. Most often, Chemical Engineers will have an opportunity to work on more than one area of the refinery, leading to a broad understanding of how the plant operates. Finally, you will have the opportunity to expand your written and verbal presentation skills in a professional work environment.

Most Chemical Engineering co-ops and interns enter into the following positions:

Process / Technical Service Engineersmay work on a variety of projects in the Technical Services Department together with your mentor that put your classroom experience as a Chemical Engineer into practice. The vast majority of our Chemical Engineering interns/co-ops work in this area. The experience will expand your understanding of the refining environment and technical aspects of the refinery. Past projects/duties include: develop and lead test runs to optimize refinery operations; perform process engineering calculations concerning the various process technology (or equipment) in the refinery; monitor and make recommendations in regards to catalyst and adsorbents; complete projects and provide recommendations for improvements to the refinery process and equipment.

Operations Research Engineersmay help develop planning, blending, scheduling, and process models for refinery engineers. The models are used to optimize crude oil purchasing, refinery production, blending and finished product scheduling, and optimization of refinery production. Typical college co-op assignments include: validation of production data and mass balancing, process modeling, and development of graphical interfaces of refinery process units.

Environmental Engineerswork on projects that involve the compliance of the entire refinery, and you will be exposed to the majority of process units in the refinery. You will be applying the engineering principles and calculations to various environmental projects and will also give you a broad knowledge of the various environmental laws that are applicable to refineries and what it takes to maintain compliance with those laws. Past projects/duties include: perform process calculations for the Risk Management Plan, including taking physical surveys of refinery process units; work on various process engineering projects within a Wastewater Treatment Plant; participate in inspections and/or testing that is conducted by federal, state, or local officials.

Products Control / Economics Engineersmay work on a wide array of projects including operations, blending, and refinery economics. You will gain an understanding of how a tank farm is operated and how gasoline and other products are prepared and shipped to customers. In addition, you will gain some exposure to the overall economics of the refinery and how operating decisions are made based upon these economics. Past projects/duties include: analyze refinery process flow data and compare to recommended optimum levels, this will help in identifying equipment failures which cause variances in capacity from the optimum levels; update information on gasoline blends and tank samples in preparation for an annual blender waiver audit; develop applications to better present process data for refinery operating decisions.

Qualifications:

  • Candidates must be majoring in Chemical Engineering
  • Strong academic performance
  • Candidates must be authorized to work in the US on a full-time indefinite basis without the need for employment visa sponsorship now or in the future.
  • Positions are available spring, summer, and fall semesters
  • Availability for multiple work terms is preferred
  • A valid driver's license is required
  • Concurrent enrollment in a degree seeking program
  • Military experience a plus
  • MIN - $32.92 per hour / MAX - $41.6 per hour

Learn more about Marathon Petroleum's benefits at www.mympcbenefits.com

As an energy industry leader, our career opportunities fuel personal and professional growth.

Location:

Findlay, Ohio

Job Requisition ID:

00018592

Pay Min/Max:

$0.00 - $999.99 Hourly

Grade:

HRLY1

Location Address:

539 S Main St

Additional locations:

Anacortes, Washington, Canonsburg, Pennsylvania, Canton, Ohio, Catlettsburg, Kentucky, Detroit, Michigan, Dickinson, North Dakota, El Paso, Texas, Garyville, Louisiana, Kenai, Alaska, Mandan, North Dakota, Martinez, California, Owensboro, Kentucky, Robinson, Illinois, Salt Lake City, Utah, San Antonio, Texas, St Paul Park, Minnesota, Texas City, Texas, Wilmington, California

Education:

Employee Group:

Part time

Employee Subgroup:

Intern

Marathon Petroleum Company LP is an Equal Opportunity Employer and gives consideration for employment to qualified applicants without discrimination on the basis of race, color, religion, creed, sex, gender (including pregnancy, childbirth, breastfeeding or related medical conditions), sexual orientation, gender identity, gender expression, reproductive health decision-making, age, mental or physical disability, medical condition or AIDS/HIV status, ancestry, national origin, genetic information, military, veteran status, marital status, citizenship or any other status protected by applicable federal, state, or local laws. If you would like more information about your EEO rights as an applicant, click here.
If you need a reasonable accommodation for any part of the application process at Marathon Petroleum LP, please contact our Human Resources Department at talentacquisition@marathonpetroleum.com. Please specify the reasonable accommodation you are requesting, along with the job posting number in which you may be interested. A Human Resources representative will review your request and contact you to discuss a reasonable accommodation. Marathon Petroleum offers a total rewards program which includes, but is not limited to, access to health, vision, and dental insurance, paid time off, 401k matching program, paid parental leave, and educational reimbursement. Detailed benefit information is available atmympcbenefits.com. The hired candidate will also be eligible for a discretionary company-sponsored annual bonus program.
Equal Opportunity Employer: Veteran / Disability

We will consider all qualified Applicants for employment, including those with arrest or conviction records, in a manner consistent with the requirements of applicable state and local laws. In reviewing criminal history in connection with a conditional offer of employment, Marathon will consider the key responsibilities of the role.


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About Marathon Petroleum

Sourced by ZipRecruiter

Marathon Petroleum Corporation, headquartered in Findlay, Ohio, US, is a leading independent petroleum refining, marketing, and transportation company. Their official website can be found at marathonpetroleum.com. The company, part of the energy sector, was established in 1887, making it one of the oldest petroleum companies in the US. It operates an integrated refining, marketing and transportation system concentrated primarily in the Midwest, Northeast, East Coast, Southeast and Gulf Coast of the United States. This includes refineries, pipelines, and terminals that process and transport crude oil and refined products.

Industry

Oil and gas extraction

Company size

10,000+ Employees

Headquarters location

Findlay, OH, US

Year founded

1887