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Associate Process Engineer Jobs in Illinois (NOW HIRING)

Donohue and Associates

Process-Mechanical Engineer

Naperville, IL · On-site

$73K - $96K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Our Process-Mechanical Engineer position offers an exciting opportunity for the selected candidate to be part of Donohue & Associates, a firm with national water/wastewater expertise in a small ...

Donohue & Associates, Inc.

Process-Mechanical Engineer

Chicago, IL

$75K - $99K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Our Process-Mechanical Engineer position offers an exciting opportunity for the selected candidate to be part of Donohue & Associates, a firm with national water/wastewater expertise in a small ...

Donohue & Associates, Inc.

Process-Mechanical Engineer

Champaign, IL · On-site

$73K - $97K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Our Process-Mechanical Engineer position offers an exciting opportunity for the selected candidate to be part of Donohue & Associates, a firm with national water/wastewater expertise in a small ...

Donohue & Associates, Inc.

Process-Mechanical Engineer

Naperville, IL · On-site

$73K - $96K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Our Process-Mechanical Engineer position offers an exciting opportunity for the selected candidate to be part of Donohue & Associates, a firm with national water/wastewater expertise in a small ...

Clayco

Process Mechanical Stress Engineer

Chicago, IL · On-site

$120K - $150K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Reporting to the Associate Principal Process Mechanical, this role provides advanced engineering expertise, mentors junior engineers, and ensures mechanical systems are designed in accordance with ...

Clayco

Process Mechanical Stress Engineer

Chicago, IL

$75K - $100K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Reporting to the Associate Principal Process Mechanical, this role provides advanced engineering expertise, mentors junior engineers, and ensures mechanical systems are designed in accordance with ...

Clayco

Process Mechanical Stress Engineer

Chicago, IL

$75K - $100K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Reporting to the Associate Principal Process Mechanical, this role provides advanced engineering expertise, mentors junior engineers, and ensures mechanical systems are designed in accordance with ...

Clayco

Process Mechanical Stress Engineer

Chicago, IL · On-site

$75K - $100K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Reporting to the Associate Principal Process Mechanical, this role provides advanced engineering expertise, mentors junior engineers, and ensures mechanical systems are designed in accordance with ...

Clayco

Process Mechanical Stress Engineer

Chicago, IL · On-site

$75K - $100K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Reporting to the Associate Principal Process Mechanical, this role provides advanced engineering expertise, mentors junior engineers, and ensures mechanical systems are designed in accordance with ...

Clayco

Process Mechanical Stress Engineer

Chicago, IL

$75K - $100K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Reporting to the Associate Principal Process Mechanical, this role provides advanced engineering expertise, mentors junior engineers, and ensures mechanical systems are designed in accordance with ...

Clayco

Process Mechanical Stress Engineer

Chicago, IL · On-site

$75K - $100K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Reporting to the Associate Principal Process Mechanical, this role provides advanced engineering expertise, mentors junior engineers, and ensures mechanical systems are designed in accordance with ...

Clayco

Associate Principal

Chicago, IL · On-site

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Lead process engineering design efforts for pet food, meat processing, and industrial manufacturing projects * Develop project scopes and establish process design basis documentation * Create and ...

Clayco

Associate Principal

Chicago, IL · On-site

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Lead process engineering design efforts for pet food, meat processing, and industrial manufacturing projects * Develop project scopes and establish process design basis documentation * Create and ...

Clayco

Associate Principal

Chicago, IL · On-site

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Lead process engineering design efforts for pet food, meat processing, and industrial manufacturing projects * Develop project scopes and establish process design basis documentation * Create and ...

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Showing results 41-60

All JobsAssociate Process Engineer JobsAssociate Process Engineer Jobs in Illinois

Associate Process Engineer information

See Illinois salary details

$40.2K

$80.1K

$127.9K

How much do associate process engineer jobs pay per year?

As of Aug 18, 2026, the average yearly pay for associate process engineer in Illinois is $80,077.00, according to ZipRecruiter salary data. Most workers in this role earn between $63,500.00 and $92,100.00 per year, depending on experience, location, and employer.

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

To thrive as an Associate Process Engineer, you need a solid background in chemical or mechanical engineering, problem-solving abilities, and a relevant bachelor's degree. Familiarity with process simulation software (like Aspen Plus or HYSYS), data analysis tools, and knowledge of industry standards is typically required. Strong analytical thinking, attention to detail, and effective communication skills help you collaborate with cross-functional teams and troubleshoot process issues. These skills ensure efficient process optimization, safety, and continuous improvement in manufacturing or production environments.

How does an associate process engineer typically collaborate with other departments during a project?

As an Associate Process Engineer, you'll work closely with cross-functional teams such as production, quality assurance, maintenance, and safety. Your role often involves gathering input from operators, coordinating with quality teams to resolve issues, and collaborating with senior engineers on process improvements. Regular communication and teamwork are essential, as you'll be expected to provide technical support, participate in meetings, and help implement solutions that align with overall operational goals. This collaborative environment not only enhances your technical skills but also helps you build strong professional relationships across the organization.

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

AspectAssociate Process EngineerProcess Engineer
Required CredentialsBachelor's degree in engineering or related field; some certifications preferredBachelor's degree in engineering; often more experience or certifications required
Work EnvironmentEntry-level, supporting process development and optimization in manufacturing or chemical plantsMore independent roles, overseeing process improvements and troubleshooting
Employer & Industry UsageCommon in manufacturing, chemical, and pharmaceutical industriesUsed across similar industries, often with more responsibility

The main difference between an Associate Process Engineer and a Process Engineer lies in experience and responsibility. The Associate role is typically entry-level, focusing on supporting process tasks, while the Process Engineer has more independence and oversees process improvements. Both roles require similar educational backgrounds, but the Process Engineer usually has more experience or certifications. Understanding these distinctions can help job seekers identify the right position for their career stage and goals.

Do associate process engineers make a lot of money?

Associate process engineers typically earn a competitive salary that varies by industry, location, and experience level. Entry-level positions often start with moderate pay, but salaries can increase with additional skills, certifications, and years of experience in process optimization, manufacturing, or engineering environments.

What does an associate process engineer do?

An associate process engineer supports the development, implementation, and optimization of manufacturing processes to improve efficiency and quality. They analyze data, troubleshoot issues, and collaborate with teams to ensure processes meet safety and regulatory standards, often using tools like process simulation software. This role typically requires a bachelor's degree in engineering or a related field and involves working in a manufacturing or industrial environment.

What are the most commonly searched types of Process Engineer jobs in Illinois?

The most popular types of Process Engineer jobs in Illinois are:

What are popular job titles related to Associate Process Engineer jobs in Illinois?

For Associate Process Engineer jobs in Illinois, the most frequently searched job titles are:

What job categories do people searching Associate Process Engineer jobs in Illinois look for?

The top searched job categories for Associate Process Engineer jobs in Illinois are:

What cities in Illinois are hiring for Associate Process Engineer jobs?

Cities in Illinois with the most Associate Process Engineer job openings:

Associate Process Engineer jobs near you
Infographic showing various Associate Process Engineer job openings in Illinois as of August 2026, with employment types broken down into 1% As Needed, 83% Full Time, 13% Part Time, 2% Contract, and 1% Nights. Highlights an 91% Physical, 3% Hybrid, and 6% Remote job distribution, with an average salary of $80,077 per year, or $38.5 per hour.

Process-Mechanical Engineer

Donohue and Associates

Naperville, IL • On-site

$73K - $96K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

This job post has expired 1 day ago. Applications are no longer accepted.

Job description

Our Process-Mechanical Engineer position offers an exciting opportunity for the selected candidate to be part of Donohue & Associates, a firm with national water/wastewater expertise in a small company environment. We are seeking an experienced engineer who can work with clients to provide project leadership, planning, design, construction, and operational services for wastewater and/or water systems. You will collaborate closely with clients and Donohue project team members throughout each of these project phases.
Desired Qualifications:
  • Experience in planning and designing water and wastewater systems, including pumping, process and mechanical piping, and related valves and process equipment.
  • Positive team- and client-focused attitude directed towards delivering quality work on time and within budget.
  • Strong communication and interpersonal skills.
  • Active participation in related professional associations a plus.

Requirements:
  • B.S. in Environmental, Mechanical, Chemical, or related engineering degree
  • PE registration
  • 10+ years of relevant technical experience

An employee-owned engineering consulting firm since 1997, Donohue & Associates has multiple offices across the upper Midwest. We work in multi-discipline teams to provide municipal and industrial clients with client-focused services for drinking water, wastewater, and stormwater infrastructure. Engineering News-Record ranks Donohue among the Top 25 Wastewater Treatment Plant Design Firms, and our innovative design teams consistently receive awards for engineering excellence.
Donohue offers a competitive wage and comprehensive benefits package, including:
  • Medical, dental, and vision insurance
  • Robust 401(k) plan with company contribution
  • Paid time off and company holidays
  • Flexible work schedules around core hours
  • Short- and long-term disability/life insurance
  • Flexible spending accounts (FSAs)
  • Professional organization support
  • Discretionary annual bonuses
  • Industry-unique monthly profit-sharing plan

At Donohue, you'll find a collaborative environment where your contributions directly influence our success-and yours.
Donohue is an Equal Opportunity Employer.

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