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Manufacturing Engineering Co-Op

Entegris · Aurora, IL · $20.00–$30.00 an hour · Full time

Posted Sep 10, 2026 · We last checked this listing on Oct 6, 2026

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Likely interview questions for this role

Written from this job description, not a generic list. Each one notes what the interviewer is really checking.

About your past

Tell me about a time you had to get feedback or approval from several people. How did you keep it moving?

What they are checking: Whether they can drive documents through review and approval without letting them stall.

Describe a project where you had to be very organized to track many small pieces.

What they are checking: Whether they can systematically manage a large documentation refresh without losing track.

Tell me about a time you worked with people much more experienced than you. How did you earn their trust?

What they are checking: Whether they show respect and curiosity with veteran engineers and operators, which makes a co-op effective.

What would you do

You'll be refreshing SOPs, batch cards, and work instructions for the Slurries lines. How would you find out whether a document matches what operators actually do?

What they are checking: Whether they would go to the floor and talk to operators rather than editing documents from a desk.

An operator tells you the official procedure is wrong and they've been doing it differently for years. What do you do?

What they are checking: Whether they listen seriously, check with engineering and quality, and avoid both blind trust and dismissal.

About the work

What makes a work instruction easy for an operator to follow on a busy shift?

What they are checking: Whether they understand clear steps, visuals, and plain language matter more than technical completeness.

What do you know about mixing, blending, and filling processes, and what could go wrong in each?

What they are checking: Whether they have basic process thinking about where variation and errors come from in slurry manufacturing.

How would you use process and quality data to support an investigation into an out-of-spec batch?

What they are checking: Whether they know how to look for patterns and compare to normal batches instead of guessing at causes.

Why does accurate documentation matter so much in chemical manufacturing for semiconductor customers?

What they are checking: Whether they understand the link between documented process, consistency, and customer trust in high-purity materials.

What safety precautions would you expect to follow when working on the floor around chemicals?

What they are checking: Whether they take chemical safety seriously and know basics like PPE and SDS before stepping onto the floor.

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The full job description

As published by Entegris.

Job Title: Manufacturing Engineering Co-Op Job Description: Manufacturing Engineering Co-Op - Spring 2027 Here at Entegris, we use advanced science to enable technologies that transform the world, and we are seeking employees who have the drive to continue the mission. The Role: Our site in Aurora, IL is seeking a Manufacturing Engineering Co-Op to join our team for the Spring 2027 season. This assignment is intended to be 6 months in duration. In this role, you will support the quality and documentation priorities of the Slurries business unit, working alongside our manufacturing engineers across the mixing, blending, and filling room processes. You will lead a systematic refresh of critical process documentation — SOPs, batch cards, response flow checklists, and work instructions — and support quality investigations using process and quality data. You will finish the assignment with hands-on manufacturing experience, a broad network across engineering, operations, and quality, and documentation and quality improvements that outlast your term. What You’ll Do: Create and update critical process documentation for the Slurries lines — Standard Operating Procedures (SOPs), batch cards, response flow checklists, and operator work instructions — and drive them through the review and approval process. Audit existing documentation against current practice on the floor, identify gaps and outdated content, and maintain a prioritized plan to close them. Support quality investigations and root-cause analysis on nonconformances, customer complaints, and scrap/rework drivers, including data collection, analysis, and verification of corrective actions. Analyze quality and process data to identify variation and improvement opportunities, and help build dashboards or reports that make quality performance visible to the team. Support audit and compliance readiness, including document control practices, training records, and change documentation. Partner with Manufacturing Engineering, Operations, and Quality teams, and present project status and results to the Slurries leadership team, including a final summary of outcomes and recommendations. What We Seek: Currently pursuing a Bachelor’s or Master’s degree in Chemical, Mechanical, Industrial, or Manufacturing Engineering, with an interest in manufacturing quality and process documentation. Strong technical writing skills — able to turn floor observations and engineering input into clear, accurate, usable procedures. Detail-oriented and organized, with the discipline to carry documentation through review and approval to completion. Comfortable with data analysis tools (Excel, Minitab, JMP, Power BI or similar); exposure to Six Sigma, statistical process control, or quality systems is a plus. Excellent written and verbal communication skills, including comfort interviewing operators and presenting leadership. Adaptable, proactive, and technologically savvy, with a passion for problem-solving and a willingness to learn from experienced engineers. Desired Major(s) & Graduation Year: Chemical Engineering, Mechanical Engineering, Industrial Engineering, Manufacturing Engineering; coursework or project experience in quality engineering, statistics, data analytics, or machine learning is a plus. Anticipated graduation: December 2027 through June 2029. Eligibility: Must be a currently enrolled student Available to work 40 hours a week, M-F (8a-5p) beginning in January through June Must be familiar with the university’s requirements to participate in a co-op program Entegris is not currently hiring candidates for co-ops/internships who will need, now or at any time in the future, Entegris sponsorship through the H1-B lottery. PHYSICAL REQUIREMENTS: On-site role in Aurora, IL; includes standing, sitting, and walking through the production plant, and adherence to PPE requirements (safety glasses, safety shoes, and other PPE as needed). WHY WORK AT ENTEGRIS? Lead. Inspire. Innovate. Define Your Future. Not everyone who works for a global company shares the same background, experiences and perspectives. We leverage the differences of our employees to bring new ideas to the table. Every employee throughout the company is encouraged to share input on projects and initiatives. Our decision-making process is truly a collaborative effort as we realize there are leaders at every level of the organization. We put our values at the core of how we operate as an organization — not just when it’s convenient, but in a lasting and meaningful way. We want the time and energy you spend here to have a positive impact on your life inside and outside of the office. WHAT WE OFFER Our total rewards package goes above and beyond just a paycheck. Whether you’re looking to build your career, improve your health, or protect your wealth, we offer generous benefits to help you achieve your goals.Compensation: $20-$30/hour range with actual pay dependent on candidate overall skills for the roleValues-driven culture with colleagues that rally around People, Accountability, Creativity and Excellence Entegris does not provide immigration-related sponsorship for this role. Do not apply for this role if you will need Entegris immigration sponsorship (e.g., H1B, TN, STEM OPT, etc.) now or in the future. At Entegris we are committed to providing equal opportunity to all employees and applicants. Our policy is to recruit, hire, train, and reward employees for their individual abilities, achievements, and experience without regard to race, color, religion, sexual orientation, age, national origin, disability, marital or military status.

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