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Process Engineer Intern Jobs in Riverside, CA (NOW HIRING)

Danaher

Software Engineer Internships

Pomona, CA · On-site

As a Software Engineering Intern at Danaher, you'll work alongside experienced engineers developing ... Producing documentation to support medical device regulatory processes Who This Is For * Students ...

Cummins Inc.

2025 - Summer Intern Co-op Conversion

Pomona, CA · On-site

$15.25 - $20.25/hr

Functional Talent Scouts (function or engineering subfunction), who are CC03 or higher employees ... process. * If recommended for close out due to no roles available, you will receive an email from ...

City of Corona

Intern II - CIP

Corona, CA · On-site

$15.50 - $20.75/hr

It also provides an opportunity for students to learn about government processes while applying ... Majors in Civil Engineering, Urban Planning, Construction Management, Project Management, or ...

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All JobsProcess Engineer Intern JobsProcess Engineer Intern Jobs in Riverside, CA

Process Engineer Intern information

See Riverside, CA salary details

$14

$23

$31

How much do process engineer intern jobs pay per hour?

As of Aug 20, 2026, the average hourly pay for process engineer intern in Riverside, CA is $23.14, according to ZipRecruiter salary data. Most workers in this role earn between $19.04 and $27.07 per hour, depending on experience, location, and employer.

What is a process engineer intern?

Process Engineer Interns are students or recent graduates who work temporarily in engineering teams to support the design, optimization, and improvement of manufacturing processes. They typically assist with data collection, process analysis, troubleshooting, and the implementation of new technologies or procedures under the supervision of experienced engineers. This internship provides hands-on experience, helping interns apply classroom knowledge to real-world industrial challenges, and often serves as a pathway to a full-time engineering role.

What do process engineer interns do?

As a Process Engineer Intern, you can anticipate working on a variety of hands-on projects that support process optimization, quality improvement, and efficiency initiatives within manufacturing or production environments. Typical responsibilities may include assisting with data collection and analysis, participating in process mapping, supporting root-cause investigations, and collaborating with multidisciplinary teams such as production, quality assurance, and maintenance. Interns often have opportunities to present their findings and contribute to real-world solutions, providing valuable exposure to daily operations and the chance to develop technical and teamwork skills essential for career advancement.

What are the key skills and qualifications needed to thrive as a process engineer intern?

To thrive as a Process Engineer Intern, you need a solid grounding in chemical, mechanical, or industrial engineering principles, often backed by enrollment in a relevant bachelor's degree program. Familiarity with process simulation software (such as Aspen Plus or AutoCAD), data analysis tools, and safety regulations is typically required. Strong problem-solving abilities, communication skills, and attention to detail help interns excel in team environments and tackle process challenges. These skills and qualifications are crucial for optimizing manufacturing processes, ensuring safety, and supporting project goals.

What is the difference between Process Engineer Intern vs Process Engineer?

AspectProcess Engineer InternProcess Engineer
Required CredentialsTypically pursuing a bachelor's degree in engineering or related fieldBachelor's degree in engineering; often a master's is preferred
Work EnvironmentInternship setting, often in manufacturing or industrial plantsFull-time professional role in similar environments
Employer & Industry UsageInternship programs in manufacturing, chemical, or industrial companiesEstablished companies in manufacturing, chemical, or process industries
Common Search & Comparison IntentYesYes

The main difference between a Process Engineer Intern and a Process Engineer is experience level and responsibilities. Interns are typically students gaining practical experience, while Process Engineers are full-time professionals responsible for process optimization, design, and troubleshooting. Internships serve as a stepping stone toward a full engineering career, with interns working under supervision, whereas Process Engineers independently manage projects and processes in their industry.

What are the most commonly searched types of Process Engineer jobs in Riverside, CA?

The most popular types of Process Engineer jobs in Riverside, CA are:

What are popular job titles related to Process Engineer Intern jobs in Riverside, CA?

For Process Engineer Intern jobs in Riverside, CA, the most frequently searched job titles are:

What job categories do people searching Process Engineer Intern jobs in Riverside, CA look for?

The top searched job categories for Process Engineer Intern jobs in Riverside, CA are:

What cities near Riverside, CA are hiring for Process Engineer Intern jobs?

Cities near Riverside, CA with the most Process Engineer Intern job openings:

Process Engineer Intern jobs near you
Infographic showing various Process Engineer Intern job openings in Riverside, CA as of August 2026, with employment types broken down into 1% As Needed, 78% Full Time, 17% Part Time, 3% Contract, and 1% Nights. Highlights an 93% Physical, 2% Hybrid, and 5% Remote job distribution, with an average salary of $48,137 per year, or $23.1 per hour.

MWD Water Reuse Co-Op Intern - MWD - #721853572

CAL POLY POMONA FOUNDATION

Pomona, CA • On-site

$25/hr

Other

Posted 29 days ago

Job description

Description
Cal Poly Pomona Enterprises Employment Services
ANNOUNCEMENT OF POSITION VACANCY
JOB POSITION: Part-Time, MWD Water Reuse Co-Op Intern
DEPARTMENT: Cooperative Education
DATE AVAILABLE: August 2026
WORK LOCATION: Pure Water Southern California, 24501 South Figueroa Street, Carson, California 90745.
ABOUT US: As the largest employer of students on the Cal Poly Pomona campus, the Foundation offers valuable work experience and hands-on training to approximately 1,500 Cal Poly Pomona students each year. The Foundation offers positions in various fields; whether it is in the area of technology, science, retail, culinary arts, hospitality1500 management, leadership or research grants, these student employees participate in Cal Poly Pomona's learn-by-doing philosophy and acquire practical skills in their designated field of study.
The Foundation also contributes operating support to nearly 1,100 Foundation and scholarship programs every year, including Bronco Athletics and the Norman J. Priest Scholarship. In addition, the Foundation administers grants and contracts, contributes to campus security, and supports several university publications. The Foundation contributes over $1 million annually to Cal Poly Pomona.
SUMMARY: The Metropolitan Water District's Water Quality Section is seeking one (1) Co-Op intern to join the Water Reuse and Process Development (WRPD) Team. The WRPD Team is responsible for operating and maintaining the demonstration plant for Pure Water Southern California (PWSC). This position requires a commitment of approximately 8-10 hours per week, Monday through Friday, between 7:00 a.m. and 3:00 p.m. Work should preferably be scheduled in blocks of at least four hours. During the summer months, work hours may be extended to up to 20 hours per week.
SOME OF THE THINGS THAT YOU WILL GET TO DO (this is just a small sampling of work variety):
Under the direction of Water Quality (WQ) Technicians, WQ Specialists, and process engineers, you may perform the following:
  • Provide both field and laboratory support for the Pure Water Southern California Demonstration Plant.
  • Interpret process flow diagrams (PFD's) and apply this knowledge by reviewing the treatment process design and verifying and documenting treatment processes.
  • Assist with sample collection and preparation, water quality testing, data entry, general laboratory cleanliness, and organization.
  • Organizing and plotting datasets
  • Provide technical report writing, editing, and literature research.
  • Experience handling chemicals in the laboratory
  • Knowledge of laboratory safety practices
  • Experience following standard operating procedures
  • Experience using computer software in a Microsoft Windows environment
  • Familiarity with chemical/physical instrumentation and laboratory measurement techniques
  • Knowledge of general laboratory calculations
  • Self-motivated team player able to work effectively with minimal supervision

MINIMUM QUALIFICATIONS:
  • Currently enrolled in an accredited four-year degree program in Civil Engineering, Chemical Engineering, Chemistry or Environmental Engineering.
    • A minimum overall GPA of 2.5 in relevant coursework (i.e. chemistry, mathematics, physics, etc.) is required.
  • Sophomore, junior, or early senior status with approximately two years remaining before graduation is required.

DRIVING REQUIREMENTS: Any students driving their personal vehicles to Metropolitan work and project locations, including Union Station, must provide proof to the Foundation of a valid California Driver's License and personal automobile Liability Insurance as required by the State of California Department of Motor Vehicles prior to beginning service with Metropolitan, if selected.
BACKGROUND CHECK POLICY: Cal Poly Pomona Enterprises is committed to protecting the health, well-being, and safety of its campus community and assets. In furtherance of these goals, Cal Poly Pomona Enterprises will make a conditional offer of employment to final job candidates, pending the satisfactory completion of a background check (including a criminal records check).
The conditional offer of employment may be rescinded if the background check reveals disqualifying information, and/or it is discovered that the candidate knowingly withheld or falsified information.
In determining the suitability of the candidate for the position, Cal Poly Pomona Enterprises will give an individualized assessment to any information regarding the criminal conviction history that the applicant submits for consideration such as the nature, gravity and recency of the conviction, the candidate's conduct, performance or rehabilitation efforts since the conviction and the nature of the job applied for.
CSU along with Cal Poly Pomona Foundation strongly recommend faculty, staff, and students who are accessing campus facilities to be immunized against COVID-19 or declare an exemption from doing so. The systemwide policy can be found at COVID-19 Vaccination Interim Policy and any questions may be sent to fdnhr@cpp.edu
Cal Poly Pomona Foundation, Inc. is an Equal Opportunity Employer. In compliance with the Americans with Disabilities Act, Cal Poly Pomona Foundation, Inc. may provide reasonable accommodations to qualified individuals with disabilities and encourages both prospective and current employees to discuss potential accommodation with the employer.

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