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Refinery Process Engineer Jobs in Illinois (NOW HIRING)

Sr Engineer Process

Downers Grove, IL · On-site

$148K - $211K/yr

... refining industries Experience in Food and Beverage Industry Experience in gas purification ... Process Engineer is between $148,000 and $211,490 , annually. Actual pay will be adjusted based on ...

Sr Engineer Process

Downers Grove, IL · On-site

$148K - $211K/yr

... or refining industries • Experience in Food and Beverage Industry • Experience in gas ... Process Engineer is between $148,000 and $211,490 , annually. Actual pay will be adjusted based on ...

Associate Process Engineer

Lisle, IL · On-site

$90K - $130K/yr

Analyze, calculate, and design new or revamped process equipment in refinery, chemical, and other ... Bachelor of Science in Chemical Engineering • Experience: Min Yr = 3+ • Licensure: E.I.T.

Associate Process Engineer

Lisle, IL · On-site

$90K - $130K/yr

Analyze, calculate, and design new or revamped process equipment in refinery, chemical, and other ... Education: Bachelor of Science in Chemical Engineering Experience: Min Yr = 3+ Licensure: E.I.T.

Associate Process Engineer

Lisle, IL · On-site

$90K - $130K/yr

Analyze, calculate, and design new or revamped process equipment in refinery, chemical, and other ... Education: Bachelor of Science in Chemical Engineering Experience: Min Yr = 3+ Licensure: E.I.T.

Analyze, calculate, and design new or revamped process equipment in refinery, chemical, and other ... Bachelor of Science in Chemical Engineering * Experience: Min Yr = 3+ * Licensure: E.I.T. Preferred ...

Senior Process Facilities Engineer - OTC cGMP Facility Relocation and Manufacturing Integration ... Develop and refine process utility concepts and routing strategies. * Support development and ...

$109K/yr

Process Improvement Engineer - Decatur, IL Position Summary: The Process Improvement Engineer is ... soybean extraction/refining, spray drying, dry blending, emulsions, reactions, separations ...

Showing results 21-40

Refinery Process Engineer information

See Illinois salary details

$69.3K

$133.1K

$225.8K

How much do refinery process engineer jobs pay per year?

As of Aug 16, 2026, the average yearly pay for refinery process engineer in Illinois is $133,130.00, according to ZipRecruiter salary data. Most workers in this role earn between $98,400.00 and $142,900.00 per year, depending on experience, location, and employer.

What does a refinery process engineer do?

A Refinery Process Engineer is responsible for designing, optimizing, and troubleshooting processes within an oil refinery to ensure efficiency, safety, and regulatory compliance. They analyze data, monitor equipment performance, and recommend improvements to enhance productivity and reduce costs. Additionally, they work closely with operations, maintenance, and safety teams to implement process modifications and resolve technical issues. Their role is crucial in maximizing yield, minimizing energy consumption, and ensuring environmental compliance.

What are some of the typical day-to-day responsibilities for a refinery process engineer?

As a Refinery Process Engineer, your main responsibilities typically include monitoring and optimizing production processes, troubleshooting technical issues, and ensuring compliance with safety and environmental regulations. You may also be involved in analyzing process data, implementing improvements, and coordinating with operations, maintenance, and other engineering teams to maintain efficient plant performance. Your day could involve both desk work—such as process modeling and reporting—and fieldwork in the refinery, observing equipment and working closely with plant personnel. This blend of tasks helps ensure the refinery operates safely, efficiently, and at peak capacity.

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

To excel as a Refinery Process Engineer, a strong background in chemical engineering, process optimization, and safety protocols is essential, typically supported by a relevant engineering degree. Proficiency with process simulation software (such as Aspen HYSYS or CHEMCAD), knowledge of distributed control systems (DCS), and familiarity with industry certifications like Six Sigma or Professional Engineer (PE) licensure are highly valued. Problem-solving abilities, strong communication, and teamwork skills help professionals navigate dynamic refinery environments and coordinate with cross-functional teams. These competencies are crucial for ensuring efficient, safe, and compliant operations within complex refinery processes.

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

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

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

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

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

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

What are popular job titles related to Refinery Process Engineer jobs in IL?

For Refinery Process Engineer jobs in IL, the most frequently searched job titles are:

Infographic showing various Refinery Process Engineer job openings in Illinois as of August 2026, with employment types broken down into 1% As Needed, 80% Full Time, 15% Part Time, 3% Contract, and 1% Nights. Highlights an 92% Physical, 2% Hybrid, and 6% Remote job distribution, with an average salary of $133,130 per year, or $64 per hour.

Sr Engineer Process

Zachry Group

Downers Grove, IL • On-site

$148K - $211K/yr

Full-time

Medical, Dental, Vision, Life, Retirement

Re-posted 26 days ago


Zachry Group rating

6.7

Company rating: 6.7 out of 10

Based on 63 frontline employees who took The Breakroom Quiz

62nd of 80 rated construction


Job description

Zachry Group is currently accepting applications for a Senior Process Engineer in our Downers Grove Engineering Design Center. Successful candidate will be responsible for leading a team supporting process engineering and design tasks for assigned projects

    Bachelor's Degree in Chemical Engineering
    15+ years of experience working as a Process Engineer within the Energy & Chemical Industries
    Experience applying standard engineering techniques, procedures, and criteria to ensure compliance with safety and environmental regulations.
    Experience in PFD and P&ID development, and participation in HAZOP/LOPA studies
    Proficient in H&MB development, equipment and instrumentation process specification and performing hydraulic analysis
    Strong knowledge of ASME and API 520/521 with proficiency designing relief devices and associated collection headers
    Good Communication Skills (Active Listening, Verbal, and Written)
    Ability to adapt to changing client requirements while defining a new path and remaining a positive role model for the team
    Excellent Attention to Detail - in own work as well as demonstrated in checking work of others
    Proven history of meeting schedule commitments and planning resources required
    Judgment and Decision Making
    Proficient with Process Engineering Software (AspenTech or equivalent)
    Strong desire to learn

PREFERRED QUALIFICATIONS
    Licensed Professional Engineer
    Experience as a Process Engineer in the gas processing and/or refining industries
    Experience in Food and Beverage Industry
    Experience in gas purification technologies such as Pressure Swing Adsorption, Membrane separation, or others
    Knowledge and/or experience in blue and/or green ammonia
    Experience integrating emerging/renewable energy with hydrogen production technologies
    Experience with hydrogen fuel blending in combustion processes
    Experience specifying process equipment in cryogenic services including cold box heat exchangers and pumps
    Experience with designing OSBL/Utility scopes required to support Licensor provided ISBL packages
    Past exposure to environmental permitting and citing studies

PHYSICAL DEMANDS
Employee will be required to communicate in person, via telephone, email, use of arm/hand steadiness, manual dexterity, finger dexterity, multi limb coordination, oral expression, and comprehension. May be required to lift, carry, and move objects safely.

WORK ENVIRONMENT
Will work in a general office environment. Capable of operating and functioning in a fast-paced work environment. Must possess a vision (corrected or uncorrected) that allows for clear visibility from a distance of 20 inches or less.

The above description covers the fundamental responsibilities of the Senior Process Engineer position. It shall not be construed as a complete listing of all miscellaneous, incidental, or similar duties which may be required from day-to-day.

Zachry Group is dedicated in providing a Safe and Drug Free work environment; and is an Equal Opportunity Employer.

In accordance with Illinois Equal Pay Act, the expected salary range for this Illinois position, Snr. Process Engineer is between $148,000 and $211,490, annually.   Actual pay will be adjusted based on experience, geographic location, and other job-related factors as permitted by law. 

This position Snr. Process Engineer is eligible for participation in Zachry's Total Employee Rewards Program, which includes medical, dental, vision, life insurance, disability coverage, and other ancillary benefits. This position is also eligible for participation in the 401(k) Retirement Savings Plan.

#LI-JL1 #Process #Engineering 
 

    Responsible for developing process flow diagrams (PFD) and piping & instrumentation diagrams (P&ID).
    Responsible for sizing and rating various equipment like pumps, horizontal and vertical vessels, heat exchangers, and air coolers.
    Responsible for performing hydraulic analysis and calculations for piping systems.  Experience to include evaluating systems involving single phase, two phase, slurries, water hammer, slug flow, and distribution networks.  Tools required should range from spreadsheet through rigorous software evaluations.
    Capable of supervising, coordinating, and reviewing work of a small staff of engineers to accomplish project objectives.
    Mentors younger engineers, leading by example.  Supports department development initiatives and standards creation/review/update.
    Participate in various client Process Hazard Analysis reviews (i.e. risk review, HAZID, HAZOP/LOPA).
    Responsible for design of relief system, flare header design, relief valve sizing and performing contingency analysis and flare header analysis.
    Evaluates, selects, and applies standard engineering techniques, procedures, and criteria, using judgment in making adaptations and modifications.
    Present technical information to peers (internal or external) for review and comment.
    Analyze problems and take appropriate action to ensure continuous and reliable operation of equipment and systems.
    Evaluate equipment and processes to ensure compliance with safety and environmental regulations.
    Estimate resource requirements of new project proposals in support of business development.
    Other duties, as assigned.
 


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About Zachry Group

Sourced by ZipRecruiter

Zachry Group is America's pacesetter in turnkey construction, engineering, maintenance, turnaround and fabrication services in the power, energy, chemicals, manufacturing and industrial sectors. It works with customers to plan, build, and renew their most critical facilities, so they can achieve their immediate and long-term goals, all at the highest safety standards. Zachry Group operates 35 offices, and averages 20,000 employees working in more than 400 locations nationwide. Please visit www.zachrygroup.com for more information.

Industry

Construction

Company size

10,000+ Employees

Headquarters location

San Antonio, TX, US

Year founded

1924