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This position has closed. Entegris removed this listing from their careers page on Oct 6, 2026. The interview prep below is still useful, and there are similar open roles at the bottom of this page.

Manufacturing Engineering Co-Op

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

Posted Sep 11, 2026 · We last checked this listing on Oct 5, 2026

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.

Practice this interview out loud.

Offer builds a real interview for this exact role at Entegris from your resume and this job description, asks the questions one at a time, and tells you what landed. The first one is free.

Practice this out loud

The full job description

As published by Entegris.

Job Title: Manufacturing Engineering Co-Op Job Description: 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 serve as a manufacturing engineer for the Pads business unit, working side by side with our engineers on real production challenges across the milling, lamination, surfacing, grooving, and finishing room processes. You will support continuous improvement and OEE projects, analyze process and quality data, and help implement new technologies on the floor. You will leave with hands-on manufacturing experience, a broad network across operations and quality, and measurable results tied to cost, throughput, and product quality. What You’ll Do: • Serve as a manufacturing engineer for the Pads business unit, supporting the milling, lamination, surfacing, grooving, and finishing room processes. • Support continuous improvement (CI) and OEE improvement projects — identifying loss sources, running trials, and helping implement countermeasures on the production floor. • Collect and analyze process and quality data to troubleshoot issues, quantify improvement opportunities, and support root-cause investigations. • Assist with the evaluation and implementation of new equipment, tooling, and technologies, including documentation, work instructions, and operator training support. • Partner closely with Manufacturing Engineering, Operations, Maintenance, and Quality teams, and present project status and results to the Pads leadership team. • Document project outcomes and deliver a final presentation summarizing results, cost savings, and recommendations at the end of the assignment. What We Seek: • Currently pursuing a Bachelor’s or Master’s degree in Mechanical, Industrial, Manufacturing, AI, Robotics, or Chemical Engineering, with a keen interest in manufacturing processes. • Demonstrates a passion for innovation, problem-solving, and continuous improvement. • Eager to learn from experienced engineers in a hands-on production environment. • Excellent written and verbal communication skills, including comfort presenting to leadership. • Detail-oriented, adaptable, and flexible in a dynamic manufacturing environment. • Technologically savvy — comfortable with data analysis tools (Excel, Minitab, Power BI or similar); exposure to Lean/Six Sigma or CAD is a plus Desired Major(s) & Graduation Year: • Industrial Engineering with a data analytics or smart manufacturing concentration • Manufacturing Engineering with Industry 4.0 / digital manufacturing coursework • Mechanical Engineering with a mechatronics, controls, or robotics focus • Chemical Engineering with process systems engineering or process data analytics (very relevant to your milling/lamination/coating process data) • Mechatronics or Robotics Engineering • Computer Science (AI, ML, or intelligent-systems track) • Coursework or interest in data/AI applications in manufacturing is a plus. • Desire graduation year 2027 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 • Adherence to PPE requirements (safety glasses, safety shoes, and other PPE as needed). • Capable to lift at least 25 lbs. 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 role • Values-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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