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Assistant Process Engineer Jobs in Oak Brook, IL

Flex Ltd.

Process Engineer

Buffalo Grove, IL · On-site

$99K - $137K/yr

The Process Engineer will be based in Buffalo Grove, IL reporting to the Process Engineering ... Develop and maintain process documentation. * Assist in the development of training and provide ...

Flex

Process Engineer

Buffalo Grove, IL

$99K - $137K/yr

The Process Engineer will be based in Buffalo Grove, IL reporting to the Process Engineering ... Develop and maintain process documentation. * Assist in the development of training and provide ...

Zachry Group

Engineer III Process

Downers Grove, IL · On-site

$106K - $149K/yr

The Process Engineer III will be responsible for routine process engineering and design tasks for ... Responsible for performing hydraulic analysis and calculations for piping systems. Assist with ...

Alsip MiniMill

Process Engineer

Alsip, IL · On-site

$105K - $125K/yr

The Process Engineer at the Alsip Mini Mill will be responsible for optimizing production processes ... Prepare technical scopes, evaluate vendor proposals, and assist with budgeting. * Oversee ...

Zachry Group

Engineer III Process

Downers Grove, IL · On-site

$106K - $149K/yr

The Process Engineer III will be responsible for routine process engineering and design tasks for ... • Assist with sizing and rating various equipment like pumps, horizontal and vertical vessels ...

Alsip MiniMill, LLC

Process Engineer

Alsip, IL

$105K - $125K/yr

The Process Engineer at the Alsip Mini Mill will be responsible for optimizing production processes ... Prepare technical scopes, evaluate vendor proposals, and assist with budgeting. * Oversee ...

Combined Metals

Process Engineer

Elgin, IL · On-site

Investigate customer complaints and assist in the determination of root causes and corrective ... process improvements. Education: * Bachelor's degree in Metallurgy, Metallurgical Engineering ...

Combined Metals of Chicago

Process Engineer

Elgin, IL · On-site

$70K - $80K/hr

Investigate customer complaints and assist in the determination of root causes and corrective ... process improvements. Education: * Bachelor's degree in Metallurgy, Metallurgical Engineering ...

Ionbond

Process Engineer

West Chicago, IL · On-site

Ionbond is looking for a dynamic Process Engineer to collaborate closely with our Plant Manager and ... * Assist Plant Management team in application development and scale-up of major programs. * Use ...

Mondelez International

Process Engineer

Chicago, IL · On-site

$77K - $106K/yr

... * Assist in VSU for the new initiatives and enables the VSU team; help the line leader in internal ... Engineering (preferred) Job specific requirements: FMCG +2 year of experience in related process.

Mondelez International

Process Engineer

Chicago, IL · On-site

$77K - $106K/yr

... * Assist in VSU for the new initiatives and enables the VSU team; help the line leader in internal ... Engineering (preferred) Job specific requirements: FMCG +2 year of experience in related process.

Mondelez International

Process Engineer

Chicago, IL · On-site

$77K - $106K/yr

... * Assist in VSU for the new initiatives and enables the VSU team; help the line leader in internal ... Engineering (preferred) Job specific requirements: FMCG +2 year of experience in related process.

Brindley Engineering

Staff Process Engineer

Lisle, IL · On-site

$110K - $150K/yr

Detail-oriented, reliable, creative team player to lead/assist in process design for new and ... Bachelor of Science in Chemical Engineering * Experience: Min Yr = 08+ * Licensure: P.E. Preferred

Brindley Engineering

Staff Process Engineer

Lisle, IL · On-site

$110K - $150K/yr

Detail-oriented, reliable, creative team player to lead/assist in process design for new and ... Bachelor of Science in Chemical Engineering • Experience: Min Yr = 08+ • Licensure: P.E.

Brindley Engineering

Staff Process Engineer

Lisle, IL · On-site

$110K - $150K/yr

Detail-oriented, reliable, creative team player to lead/assist in process design for new and ... Bachelor of Science in Chemical Engineering Experience: Min Yr = 08+ Licensure: P.E. Preferred ...

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All JobsProcess Engineer JobsAssistant Process Engineer JobsAssistant Process Engineer Jobs in Oak Brook, IL

Assistant Process Engineer information

See Oak Brook, IL salary details

$14

$25

$48

How much do assistant process engineer jobs pay per hour?

As of Aug 17, 2026, the average hourly pay for assistant process engineer in Oak Brook, IL is $25.71, according to ZipRecruiter salary data. Most workers in this role earn between $17.69 and $29.86 per hour, depending on experience, location, and employer.

What are the key skills and qualifications needed to thrive as an assistant process engineer?

To thrive as an Assistant Process Engineer, a solid background in chemical or process engineering, analytical problem-solving skills, and a relevant engineering degree are essential. Familiarity with process simulation software (such as Aspen HYSYS or AutoCAD), data analysis tools, and safety regulations is typically required. Strong teamwork, effective communication, and attention to detail help individuals stand out in this role. These skills and qualities ensure efficient process optimization, safe operations, and successful collaboration within engineering teams.

What are some common challenges faced by assistant process engineers, and how can they effectively overcome them?

Assistant Process Engineers often encounter challenges such as adapting to rapidly changing project requirements, troubleshooting unexpected process inefficiencies, and balancing multiple tasks under tight deadlines. To navigate these obstacles, it's important to develop strong problem-solving skills, maintain clear communication with senior engineers and cross-functional teams, and stay organized through effective time management. Proactively seeking feedback and learning from experienced colleagues can also help in building confidence and technical expertise, paving the way for career progression.

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

AspectAssistant Process EngineerProcess Engineer
QualificationsBachelor's in Engineering or related field, some certificationsBachelor's or higher in Engineering, often with more experience
Work EnvironmentSupportive, entry-level, team-basedMore autonomous, project management responsibilities
ResponsibilitiesAssist in process design, data collection, troubleshootingDesign, optimize, and oversee manufacturing processes

Assistant Process Engineers typically support process development and troubleshooting under supervision, while Process Engineers take on more independent responsibilities in designing and optimizing processes. Both roles require similar educational backgrounds, but Process Engineers usually have more experience and autonomy in their tasks.

How much does an assistant process engineer get paid?

The average salary for an assistant process engineer typically ranges from $50,000 to $70,000 per year, depending on experience, location, and industry. Entry-level positions may start lower, while those with specialized skills or certifications can earn higher wages. Benefits often include health insurance, paid time off, and opportunities for professional development.

What does an assistant process engineer do?

An assistant process engineer supports the development, implementation, and optimization of manufacturing or chemical processes. They assist in data collection, process troubleshooting, and ensuring safety and quality standards are met, often using tools like process simulation software. This role typically requires strong analytical skills and knowledge of engineering principles.

What are popular job titles related to Assistant Process Engineer jobs in Oak Brook, IL?

For Assistant Process Engineer jobs in Oak Brook, IL, the most frequently searched job titles are:

What job categories do people searching Assistant Process Engineer jobs in Oak Brook, IL look for?

The top searched job categories for Assistant Process Engineer jobs in Oak Brook, IL are:

What cities near Oak Brook, IL are hiring for Assistant Process Engineer jobs?

Cities near Oak Brook, IL with the most Assistant Process Engineer job openings:

Assistant Process Engineer jobs near you
Infographic showing various Assistant Process Engineer job openings in Oak Brook, IL as of August 2026, with employment types broken down into 1% As Needed, 79% Full Time, 16% Part Time, 3% Contract, and 1% Nights. Highlights an 92% Physical, 2% Hybrid, and 6% Remote job distribution, with an average salary of $53,475 per year, or $25.7 per hour.

Process Engineer

Flex Ltd.

Buffalo Grove, IL • On-site

$99K - $137K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Re-posted 4 days ago

Job description

Flex is the diversified manufacturing partner of choice that helps market-leading brands design, build and deliver innovative products that improve the world.
A career at Flex offers the opportunity to make a difference and invest in your growth in a respectful, inclusive, and collaborative environment. If you are excited about a role but don't meet every bullet point, we encourage you to apply and join us to create the extraordinary.
Job Summary
Summary:
The Process Engineer will be based in Buffalo Grove, IL reporting to the Process Engineering Manager. The Process Engineer plans, directs, and coordinates manufacturing processes by providing technical support in the development, implementation and maintenance of manufacturing systems per project requirements.
Responsibilities:
  • Define and implement manufacturing systems appropriate for customer applications.
  • Support manufacturing KPIs such as OEE, Yield, Scrap and Downtime.
  • Establish and improve robust, repeatable, and reproducible process parameters.
  • Capability to independently or together with other engineering stakeholders identify root causes of failures in the manufacturing process.
  • Advanced troubleshooting of complex mechanical issues with high-speed automated manufacturing equipment.
  • Provide equipment maintenance and repair support as required.
  • Understanding the manufacturing process, technologies, techniques, and the product.
  • Support creation and implementation of engineering change orders (ECOs).
  • Develop, implement, and take ownership of process control methodologies.
  • Participate in activities pertaining to cycle time and process improvements.
  • Implement statistical process analysis on new and existing products.
  • Develop and maintain process documentation.
  • Assist in the development of training and provide training to production personnel.
  • Define, Implement, and evaluate proposed design updates and processes.
  • Develop, evaluate, and improve manufacturing methods.
  • Create work instructions and coordinate training for facilities and production personnel.
  • Coordinate/participate in pFMEA of manufacturing processes
  • Apply statistical methods to estimate future manufacturing requirements and potential.

Qualifications:
  • B.S. in Mechanical/Industrial/Manufacturing Engineering with a minimum of 6 years' experience in related field.
  • Minimum 2 years of experience working in a medical manufacturing or other highly regulated manufacturing environment.
  • Industrial/Manufacturing Engineering experience working in high-volume assembly processes.
  • Knowledge of automated equipment systems and tools - robotics, vision, material handling/part feeding systems, conveyors, ultrasonic welding, foil sealing, HMI/PLC controls.
  • Travel required - 5%

MF15
What you'll receive for the great work you provide:
  • Full range of medical, dental, and vision plans
  • Life Insurance
  • Short-term and Long-term Disability
  • Matching 401(k) Contributions
  • Vacation and Paid Sick Time
  • Tuition Reimbursement

Application Deadline:
Applications for this job position will be accepted for at least five days following the job posting start date below and continuing until the end date below or until the position is filled. This posting may close sooner due to application volume.
Job Posting Start Date 07-15-2026 Job Posting End Date 09-16-2026
The base pay range for this position is provided below. The final base rate offered will be determined using job-related, non-discriminatory criteria, including but not limited to experience, qualifications, geographic location, education, external market data, and internal equity.
$99,900.00 USD - $137,400.00 USD Annual
Job Category
Production Engineering
Is Sponsorship Available?
No
Flex is an Equal Opportunity Employer and employment selection decisions are based on merit, qualifications, and abilities. We do not discriminate based on: age, race, religion, color, sex, national origin, marital status, sexual orientation, gender identity, veteran status, disability, pregnancy status, or any other status protected by law. We're happy to provide reasonable accommodations to those with a disability for assistance in the application process. Please email accessibility@flex.com and we'll discuss your specific situation and next steps (NOTE: this email does not accept or consider resumes or applications. This is only for disability assistance. To be considered for a position at Flex, you must complete the application process first).
Flex Personnel logo

About Flex Personnel

Sourced by ZipRecruiter

The Flex Team is made up of Staffing Industry experts committed to serving the needs of businesses and workers by bringing people together. We are guided by our Core values Integrity, Courtesy, and Respect. At Flex we bring Businesses and People together. We carefully assess both the needs of our Business clients and the complete profiles of each candidate, and then make the connections we believe will be most mutually beneficial. With offices in select markets throughout the Country, We are continually expanding our industry reach nationwide.

Industry

Recruiting and staffing services

Company size

11 - 50 Employees

Headquarters location

Dallas, TX, US

Social media

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