Process Engineer Jobs in Illinois
Process Engineer jobs in Illinois are in strong and consistent demand, concentrated in chemical manufacturing, food and beverage production, pharmaceutical processing, and advanced materials, with openings at every level from entry-level process technician through senior principal engineer. The heaviest hiring is in the Chicago metro, Joliet, and Decatur, where companies like Archer-Daniels-Midland, Abbott Laboratories, and BASF maintain major manufacturing and R&D operations. The most sought-after specialties in Illinois include continuous improvement and lean manufacturing, pharmaceutical validation, and chemical process optimization. Find a role that fits below and apply directly.
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Job 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.
- Need to be able to analyze and interpret data in order to make decisions for process or tooling
- Need to be able to analyze through mini-tab software
- 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 11-13-2026 Job Posting End Date 01-12-2027

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 AnnualJob Category
Production EngineeringIs 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).See All 141+ Process Engineer Jobs in Illinois
Find roles in Illinois that match your experience and apply in just a few clicks.
Find Process Engineer JobsProcess Engineer Jobs by City in Illinois
Where Illinois roles are concentrated, by current openings.
Process Engineer Job Market in Illinois
A snapshot from current Illinois openings, updated as new roles post.
Who's Hiring



Top Industries Hiring
- Consulting & Professional Services
- Energy
- Manufacturing
- Staffing & Recruiting
- Automotive
What Illinois Employers Look For
The qualifications that appear most often in process engineer jobs across Illinois.
- Bachelor's degree in chemical engineering, industrial engineering, or a closely related technical field
- Demonstrated experience with process improvement methodologies such as Lean, Six Sigma, or Kaizen
- Proficiency with process simulation, data analysis, or engineering software used in manufacturing environments
- Hands-on experience troubleshooting and optimizing production processes in a regulated or industrial setting
- Familiarity with safety and environmental compliance standards applicable to Illinois manufacturing facilities
- Strong written and verbal communication skills for cross-functional collaboration with operations and quality teams
Process Engineer Jobs in Illinois: Frequently Asked Questions
How do you become a process engineer in Illinois?
Most process engineer roles in Illinois require a bachelor's degree in chemical, mechanical, or industrial engineering from an accredited program. Illinois does not require a state-specific occupational license to work as a process engineer in industry, though engineers who offer services directly to the public may pursue Professional Engineer licensure through the Illinois Department of Financial and Professional Regulation. Employers in pharmaceuticals and food processing additionally value candidates with Six Sigma certification or experience in FDA-regulated environments.
Which companies hire process engineers in Illinois?
Employers hiring process engineers in Illinois right now include AbbVie, Rivian, and ADM, based on current listings on Migrate Mate as of November 2026. Illinois's deep base of chemical, pharmaceutical, and food manufacturing companies means openings arise steadily across both large corporations and mid-size specialty producers throughout the state.
Which Illinois cities have the most process engineer jobs?
Chicago, Decatur, and Lisle have the most process engineer openings in Illinois. The Chicago metro dominates due to its concentration of pharmaceutical manufacturers, chemical distributors, and food processing plants, while smaller cities like Joliet and Decatur are driven by large anchor employers in corn processing, petrochemicals, and agricultural manufacturing that sustain consistent engineering demand.
Are there remote process engineer jobs in Illinois?
Yes, but they're rare. Process engineering is fundamentally a hands-on, plant-floor role, so most positions require on-site presence. About 44% of process engineer openings tied to Illinois are remote or hybrid as of November 2026, and these tend to be concentrated in process design, documentation, or validation planning tasks that can be completed off-site without direct equipment access.
How can I get hired as a process engineer in Illinois with little or no experience?
The most realistic entry path is applying for a process technician, manufacturing engineer associate, or quality engineer role at a large Illinois manufacturer and moving into a process engineering track from there. Companies like Abbott, Caterpillar, and Illinois Tool Works run structured new-graduate rotational programs that give candidates without direct experience exposure to process work. Completing a Six Sigma Green Belt certification or building a portfolio through university capstone projects in process optimization also gives candidates a concrete edge in Illinois hiring.
Where can I find and apply to process engineer jobs in Illinois?
You can find and apply to process engineer jobs in Illinois on Migrate Mate, which lists current openings from employers actively hiring in the state. Find roles that match your experience and location, then apply directly to each position without creating an account or signing up.
See All 141+ Process Engineer Jobs in Illinois
Find roles in Illinois that match your experience and apply in just a few clicks.
Find Process Engineer Jobs