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Plastic Process Engineer Jobs in New Jersey (NOW HIRING)

Comar

Plastics Process Engineer

Buena, NJ · On-site

Process Engineer Hours: full-time position. Competitive pay & benefits: health, dental, vision, paid time off, 401k with match... and more! "Come Build a Career with our Growing, Fast-Paced, Customer ...

Weiss-Aug Group

Process Innovation Manager

Fairfield, NJ · On-site

$120K - $140K/yr

We're currently seeking a passionate and skilled Plastics Process Molding Tooling Engineer to join our team and contribute to our mission of delivering high-quality, engineered solutions to our ...

Comar Engineering Services

Plant Engineer

Buena, NJ · On-site

Strong understanding of plastic processing equipment and plastic materials, including injection ... engineering resins. * Understanding of mold and tooling design related to plastic processing.

Comar

Plant Engineer

Buena, NJ · On-site

Strong understanding of plastic processing equipment and plastic materials, including injection ... engineering resins. * Understanding of mold and tooling design related to plastic processing.

Formosa Plastics

Carbon Engineer

Livingston, NJ · On-site

$126K - $134K/yr

A. (Formosa Plastics) is a growing, vertically-integrated supplier of plastic resins and ... The Carbon Engineer will apply engineering principles, process knowledge, and carbon accounting ...

Yespac

Plastic Extruder Operator

Somerville, NJ · On-site

$20 - $25/hr

Troubleshoot mechanical issues, machine malfunctions, or process deviations by applying engineering ... Mandatory experience in plastics production environment with plastics extrusion or plastics ...

Formosa Plastics

Staff Engineer

Livingston, NJ · On-site

$108K - $131K/yr

A. (Formosa Plastics) is a growing, vertically-integrated supplier of plastic resins and ... This position focuses on driving operational excellence through systems design, process ...

Rizonet

''Engineering Manager''

Paterson, NJ · On-site

$140 - $170/hr

Engineering Manager On-site: Paterson, NJ. Position Summary The Engineering Manager leads the ... Hands‑on plastics processing expertise: able to run scientific molding directly at the machine ...

Rizonet

Engineering Manager

Jersey City, NJ

$140K/yr

Engineering Manager On-site: Paterson, NJ Position Summary The Engineering Manager leads the ... Hands-on plastics processing expertise: able to run scientific molding directly at the machine ...

LyondellBasell Industries

I&E Engineer

Edison, NJ · On-site

We'readdressing the global challenges of ending plastic waste, taking climate action, and ... The position interacts with other technical groups on site (process engineering, maintenance, and ...

New

Formosa Plastics

Application Developer II

Livingston, NJ · On-site

$95K - $124K/yr

A. (Formosa Plastics) is a growing, vertically-integrated supplier of plastic resins and ... Identify root causes whether related to bugs, system design, data, or processes. QUALIFICATIONS ...

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All JobsPlastic Process Engineer JobsPlastic Process Engineer Jobs in New Jersey

Plastic Process Engineer information

See New Jersey salary details

$50.3K

$93.4K

$144.7K

How much do plastic process engineer jobs pay per year?

As of Aug 29, 2026, the average yearly pay for plastic process engineer in New Jersey is $93,420.00, according to ZipRecruiter salary data. Most workers in this role earn between $75,600.00 and $104,600.00 per year, depending on experience, location, and employer.

What does a plastic process engineer do?

A Plastic Process Engineer is responsible for designing, developing, and optimizing processes involved in the manufacturing of plastic products. They work with various types of plastic materials and molding technologies, such as injection molding, extrusion, and blow molding. Their duties often include troubleshooting production issues, improving process efficiency, ensuring product quality, and collaborating with design and production teams to implement best practices. They also play a key role in selecting materials, setting process parameters, and maintaining compliance with safety and environmental regulations.

What are some common challenges faced by plastic process engineers in optimizing manufacturing processes?

Plastic Process Engineers often encounter challenges such as maintaining consistent product quality while scaling up production, troubleshooting equipment malfunctions, and minimizing material waste. They must continuously monitor and adjust processing parameters like temperature, pressure, and cycle time to ensure efficiency and compliance with specifications. Collaboration with design, quality, and maintenance teams is crucial to quickly resolve issues and implement process improvements. Staying updated with new materials and technologies also plays a key role in overcoming these challenges and advancing in the field.

What are the key skills and qualifications needed to thrive as a plastic process engineer, and why are they important?

To thrive as a Plastic Process Engineer, you need a solid background in chemical or mechanical engineering, polymer science, and process optimization, often backed by a relevant degree. Familiarity with CAD software, injection molding machines, statistical process control (SPC), and certifications like Six Sigma are commonly required. Strong problem-solving abilities, attention to detail, and effective communication skills help you collaborate with cross-functional teams and drive continuous improvement. These competencies ensure efficient production, high product quality, and innovation in plastic manufacturing environments.

What is the difference between Plastic Process Engineer vs Plastic Technician?

AspectPlastic Process EngineerPlastic Technician
CredentialsBachelor's degree in plastics engineering, chemical engineering, or related fieldTechnical diploma or associate degree in plastics technology or related field
Work EnvironmentDesign, optimize, and oversee manufacturing processes in production facilitiesOperate and maintain plastic processing equipment on the production floor
ResponsibilitiesProcess development, troubleshooting, and process improvementMachine setup, operation, and quality checks

The Plastic Process Engineer focuses on designing and improving plastic manufacturing processes, requiring a higher level of education and analytical skills. In contrast, the Plastic Technician handles day-to-day machine operation and maintenance. Both roles are essential in the plastics industry, but they differ in scope and responsibilities.

What are popular job titles related to Plastic Process Engineer jobs in New Jersey?

For Plastic Process Engineer jobs in New Jersey, the most frequently searched job titles are:

What job categories do people searching Plastic Process Engineer jobs in New Jersey look for?

The top searched job categories for Plastic Process Engineer jobs in New Jersey are:

Plastic Process Engineer jobs near you
Infographic showing various Plastic Process Engineer job openings in New Jersey as of August 2026, with employment types broken down into 1% As Needed, 76% Full Time, 16% Part Time, 2% Temporary, 4% Contract, and 1% Nights. Highlights an 89% Physical, 3% Hybrid, and 8% Remote job distribution, with an average salary of $93,420 per year, or $44.9 per hour.

Plastics Process Engineer

Buena, NJ • On-site

Comar Engineering Services
See more jobs at Comar Engineering Servicesexternal

Full-time

Medical, Dental, Vision, Retirement, PTO

Re-posted yesterday

Job description

Process Engineer

Hours: full-time position.
Competitive pay & benefits: health, dental, vision, paid time off, 401k with match…
and more!

“Come Build a Career with our Growing, Fast-Paced, Customer-Focused Company that fosters
Training and Professional Development!”

WHAT YOU WILL DO:
“Quality & Safety are Top Comar Priorities"

• Responsible for sampling molds and for the process development of all new and transferred injection molds.
• Work with the Engineering, Quality and Production teams to develop molds capable of running highly repeatable and robust molding processes.
• Employ science-based process development procedures and validation protocols.
• Work with other company teams to improve overall mold development and validation procedures.
• Assist in developing and teaching Cycle Tech Training program.

Safety and Cleanliness
“We have put in place Covid-19 practices for our employees’ safety”
• Follow all plant safety guidelines and GMP (Good Manufacturing Practices).
• Maintain a clean and safe work area and report any unsafe conditions to supervisor.
• Wear company issued personal protective equipment (PPE) such as gloves, masks, hairnets, earplugs.
Quality
• Meet or exceed Quality standards consistently.
• Report any quality problems immediately.

WHO WE ARE LOOKING FOR:
"A Comar employee who will represent the customer and be the consumer's advocate"

• Two or four degree preferred, but will consider High School diploma or general education degree (GED) with relevant experience.
• Hands-on Processing Engineering experience required.
• At least 3-5 years related experience and/or training in mold development.
• Working knowledge of Scientific Molding practices with a plus for having RJG Master Molder or similar certification, eDART cycle graph interpretation.
• Thorough understanding of injection mold tooling and the IQ/OQ/PQ validation process.
Preferred:
• Knowledge of IQMS.
• Previous experience in related functions and an ISO 9001/13485 environment.
• Preference to working in Medical Devices but will consider similar highly regulated environments.
Certifications or Licenses:
• Master Molder 1 certificate desired.

Can You…?
• Read and interpret documents such as safety rules, operating and maintenance instructions, blueprints, and procedure manuals.
• Carry out instructions furnished in written, oral, or diagram form.
• Write routine reports and correspondence.
• Speak effectively before groups of customers or employees.
• Add, subtract, multiply, and divide in all units of measure, using whole numbers, commons fractions, and decimals. Compute rate, ratio, and percent.
Do you have the Physical Stamina to…?
• Stand, walk, sit, and bend throughout the work shift.
• Regularly use hands and fingers to handle or feel; reach with hands and arms.
• Frequently lift and/or move up to 50 pounds with equipment.
• Use close vision, color vision, peripheral vision, depth perception, and adjust focus.

WORK ENVIRONMENT
Frequently exposed to moving mechanical parts. The noise level in the work environment is moderate and requires the use of hearing protection.

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