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Process Engineering Jobs in Illinois (NOW HIRING)

Lead the development of process engineering deliverables for capital projects, including: * Process Flow Diagrams (PFDs) * Piping & Instrumentation Diagrams (P&IDs) * Process descriptions and ...

Lead the development of process engineering deliverables for capital projects, including: * Process Flow Diagrams (PFDs) * Piping & Instrumentation Diagrams (P&IDs) * Process descriptions and ...

Engineer II Process

Downers Grove, IL · On-site

$84K - $119K/yr

Coordinates with High Value Engineering Center for engineering execution. * Evaluates equipment and process system designs to ensure compliance with safety and environmental regulations. * Other ...

... engineering team in developing, improving, and sustaining production processes. This role provides ... hands-on exposure to manufacturing operations, process optimization, equipment introduction, and ...

Interpret engineering drawings, process specifications, schematics, and technical documentation to guide process setup and troubleshooting. * Use data analysis, reporting, or automation tools to ...

Bachelor's Degree in Chemical or Mechanical Engineering, or related engineering discipline 15+ years of experience working as a Process Engineer within the Power and/or Energy & Chemical Industries ...

Should have experience in system design engineering in the power industry. • Responsible for developing process flow diagrams (PFD) and piping & instrumentation diagrams (P&ID). • Responsible for ...

Senior Process Engineer

Deerfield, IL · On-site

$140 - $150/hr

ResponsibilitiesLead process engineering for complex capital projects from feasibility through startupOwn process design basis, simulations, equipment specifications, and process ...

Posted today

Your expertise in manufacturing engineering, automation, and continuous improvement will be ... manufacturing processes for new product launches, including equipment, monitoring, and data ...

Sr Engineer Process

Downers Grove, IL · On-site

$148K - $211K/yr

Successful candidate will be responsible for leading a team supporting process engineering and design tasks for assigned projects Responsibilities • Responsible for developing process flow diagrams ...

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Senior Process Engineer

Charleston, IL · On-site

$95K - $123K/yr

Drives improvements in VOS KPIs by leveraging process engineering practices and Lean principles and methodologies to reduce waste. The role also fosters a work environment where Vesuvius' CORE values ...

Process Engineer

Chicago, IL · On-site

$135K - $185K/yr

About LJC LJC Design & Engineering is a full-service architecture, engineering, and design firm ... The Process Engineer works closely with clients, process architects, utilities engineers ...

About LJC LJC Design & Engineering is a full-service architecture, engineering, and design firm ... The Process Engineer works closely with clients, process architects, utilities engineers ...

About LJC LJC Design & Engineering is a full-service architecture, engineering, and design firm ... The Process Engineer works closely with clients, process architects, utilities engineers ...

About LJC LJC Design & Engineering is a full-service architecture, engineering, and design firm ... The Process Engineer works closely with clients, process architects, utilities engineers ...

About LJC LJC Design & Engineering is a full-service architecture, engineering, and design firm ... The Process Engineer works closely with clients, process architects, utilities engineers ...

Showing results 41-60

Process Engineering information

See Illinois salary details

$48K

$89.2K

$138.1K

How much do process engineering jobs pay per year?

As of Aug 10, 2026, the average yearly pay for process engineering in Illinois is $89,167.00, according to ZipRecruiter salary data. Most workers in this role earn between $72,200.00 and $99,800.00 per year, depending on experience, location, and employer.

Are process engineers in demand?

Process engineers are in high demand across industries such as manufacturing, chemical, and energy sectors due to their role in optimizing production processes and improving efficiency. Employment growth is driven by the need for cost reduction, safety improvements, and technological advancements, with many positions requiring skills in process simulation and control systems.

What is process engineering?

Process engineering is a field of engineering focused on designing, implementing, controlling, and optimizing industrial processes, particularly in manufacturing and chemical production. Process engineers work to develop efficient systems for transforming raw materials into finished products, ensuring safety, quality, and cost-effectiveness. They apply principles from chemistry, physics, and mathematics to solve production problems and improve processes. Process engineering is essential in industries such as oil and gas, pharmaceuticals, food and beverage, and energy.

What is the difference between Process Engineering vs Chemical Engineering?

AspectProcess EngineeringChemical Engineering
Required CredentialsBachelor's in Chemical, Mechanical, or Industrial Engineering; often certifications like Six SigmaBachelor's or higher in Chemical Engineering; professional engineer (PE) license may be preferred
Work EnvironmentManufacturing plants, process facilities, industrial settingsResearch labs, chemical plants, design offices
Industry UsageFocuses on optimizing manufacturing processes and production efficiencyDesigns chemical processes, develops new chemicals, and research

Process Engineering primarily concentrates on improving and maintaining manufacturing processes within industrial settings, while Chemical Engineering involves designing chemical processes and developing new chemical products. Both roles require similar educational backgrounds and often overlap in industry applications, but their core focus areas differ.

What jobs do process engineers do?

Process engineers design, develop, and optimize manufacturing processes to improve efficiency, safety, and quality. They analyze production systems, troubleshoot issues, and implement improvements using tools like process flow diagrams and statistical analysis. Their work often involves collaboration with production teams and requires knowledge of engineering principles and industry standards.

What are some common challenges faced by process engineers when implementing process improvements in a manufacturing environment?

Process engineers often encounter challenges such as resistance to change from operators and staff, integrating new technologies with legacy systems, and ensuring that improvements do not disrupt ongoing production. Balancing cost-effectiveness with quality and safety standards can also be demanding. Successful process engineers collaborate closely with cross-functional teams, provide clear communication, and use data-driven approaches to overcome these obstacles and drive continuous improvement.

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

To thrive as a Process Engineer, you need a solid background in engineering principles, process optimization, and problem-solving, typically supported by a degree in chemical, mechanical, or industrial engineering. Familiarity with process simulation software (like Aspen Plus or AutoCAD), Six Sigma certification, and experience with quality management systems are often required. Strong analytical thinking, effective communication, and teamwork are essential soft skills to excel in cross-functional projects and drive continuous improvement. These skills ensure efficient production processes, cost reduction, and consistent product quality within manufacturing or industrial environments.
What are the most commonly searched types of Process Engineering jobs in Illinois? The most popular types of Process Engineering jobs in Illinois are:
What job categories do people searching Process Engineering jobs in Illinois look for? The top searched job categories for Process Engineering jobs in Illinois are:
What cities in Illinois are hiring for Process Engineering jobs? Cities in Illinois with the most Process Engineering job openings:
Infographic showing various Process Engineering job openings in Illinois as of August 2026, with employment types broken down into 1% As Needed, 84% Full Time, 12% Part Time, and 3% Contract. Highlights an 92% Physical, 2% Hybrid, and 6% Remote job distribution, with an average salary of $89,167 per year, or $42.9 per hour.

Process Design Engineer

Solenis

Virginia, IL • On-site, Remote

Full-time

Medical, Dental, Vision, Retirement, PTO

Posted 14 days ago


Solenis rating

8.2

Company rating: 8.2 out of 10

Based on 20 frontline employees who took The Breakroom Quiz

30th of 100 rated chemical manufacturers


Job description

Solenis is a leading global provider of water and hygiene solutions. The company's product portfolio includes a broad array of water treatment chemistries, process aids, functional additives, cleaners, disinfectants, and state-of-the-art monitoring, control and delivery systems. These technologies are used by customers to improve operational efficiencies, enhance product quality, protect plant assets, minimize environmental impact, and create cleaner and safer environments. Headquartered in Wilmington, Delaware, the company has 78 manufacturing facilities strategically located around the globe and employs a team of over ~23000 professionals in >160 countries across six continents. Solenis is a 2025 Best Managed Company Gold Standard honoree.

For additional information about Solenis, please visit www.solenis.comor follow us on social media.

Perks of working with us!

  • Competitive health + wellness benefit plan

  • Continuous professional development with many opportunities for growth!

  • Recharge with 15 days of paid time off

  • Competitive Salary and Bonuses

  • 401k Plan

  • Ability to work remotely

Position Summary

You will be responsible for leading and executing process engineering deliverables that support capital projects, manufacturing improvements, and corporate sustainability initiatives. This role develops innovative process solutions, performs technical evaluations, and provides engineering expertise from concept development through project execution and start-up.

Working collaboratively with Operations, R&D, EHS, Project Engineering, and external engineering partners, you will ensure projects are designed to achieve business objectives while maintaining the highest standards of safety, quality, environmental stewardship, and operational excellence.

Key Responsibilities

  • Lead the development of process engineering deliverables for capital projects, including:

    • Process Flow Diagrams (PFDs)

    • Piping & Instrumentation Diagrams (P&IDs)

    • Process descriptions and operating philosophies

    • Equipment sizing and specifications

    • Process calculations and mass/energy balances

    • Utility and process design requirements

  • Develop and optimize manufacturing processes to improve safety, product quality, reliability, capacity, and cost performance.

  • Conduct technical evaluations, feasibility studies, and process simulations to identify improvement opportunities.

  • Support product commercialization by evaluating process capability and manufacturing readiness.

  • Develop and modify process methods, and operating controls to meet product quality and production objectives.

  • Recommend and implement process improvements, modifications, and standardization initiatives across manufacturing sites.

  • Review product development requirements and evaluate compatibility with existing manufacturing processes, identifying required equipment, costs, schedules, and process changes.

  • Integrate equipment capabilities and material characteristics to meet process and technology performance specifications.

  • Participate in Process Hazard Analyses (PHA), HAZOP studies, Management of Change (MOC), and other process safety activities.

  • Troubleshoot manufacturing issues and provide technical recommendations to improve plant performance.

  • Develop engineering documentation, design standards, and best practices to improve consistency across the manufacturing network.

  • Coordinate with external engineering firms, contractors, and equipment vendors as required.

Qualifications

  • Bachelor's degree in Chemical Engineering or related engineering discipline required.

  • 10+ years of process engineering experience in a manufacturing, chemical, specialty chemicals, pulp and paper, water treatment, or industrial processing environment.

  • Experience supporting capital projects from concept through startup.

  • Experience developing process engineering design packages and technical documentation.

  • Experience working in cross-functional project teams.

We understand that candidates will not meet every single desired qualification. If your experience looks a little different from what we've identified and you think you can bring value to the role, we'd love to learn more about you.

At Solenis, we understand that our greatest asset is our people. That is why we offer competitive compensation, comprehensive benefits which include medical, dental, vision & 401K, and numerous opportunities for professional growth and development. So, if you are interested in working for a world-class company and enjoy solving complex challenges, whether in the lab or the field, consider joining our team.

Solenis is proud to be an Equal Opportunity Affirmative Action Employer, including Minorities / Women/ Veterans / Disabled.All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.

Should you require assistance in applying to this opportunity, please reach out to Solenis Talent Acquisition at talentacquisition@solenis.com

The expected compensation range for this position is between $93,530.00 and $137,181.00 plus discretionary bonuses. The exact compensation may vary based on your skills, experience and other factors permitted by law.

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