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Cleanroom Technician, 2nd shift/Mon-Fri/2 pm to 10 pm

Entegris · Aurora, IL · $25.00–$28.00 an hour · Full time

Posted Jul 8, 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 suggested a change to an experiment design based on what you saw hands-on.

What they are checking: Whether they offer practical insight to engineers, which the posting asks technicians to provide.

Tell me about a time you worked with engineers who wanted results faster than the tools allowed.

What they are checking: Whether they can communicate realistic timelines while still helping the team move quickly.

How have you contributed to continuous improvement in a lab or cleanroom?

What they are checking: Whether they help improve the lab beyond their own experiments, as the role expects.

What would you do

You're on second shift and a polisher fails partway through an important experiment. What do you do?

What they are checking: Whether they protect the samples, document what happened, and troubleshoot or escalate appropriately.

About the work

Tell me about your experience setting up and running CMP polishers like the Mirra or Reflexion.

What they are checking: Whether they have hands-on CMP tool experience, which is central to running polishing experiments here.

Walk me through how you'd prepare wafers for a polishing experiment, including measurements.

What they are checking: Whether they know pre-measurement of thickness and defects is what makes before-and-after results meaningful.

Removal rates are drifting from run to run during an experiment. How would you track down the source of variation?

What they are checking: Whether they can troubleshoot systematically across pad, slurry, conditioning, and tool settings.

How do you program a polishing recipe, and what checks do you do before running it?

What they are checking: Whether they verify recipes carefully to avoid wasting wafers and experiment time.

How do you organize data from a set of polishing runs so engineers can quickly see what happened?

What they are checking: Whether they produce clear charts and records that help engineers spot yield problems.

What cleanroom habits do you follow to keep contamination off wafers?

What they are checking: Whether they consistently practice contamination control, since defects can ruin an experiment.

Practice this interview out loud.

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The full job description

As published by Entegris.

Job Title: Cleanroom Technician, 2nd shift/Mon-Fri/2 pm to 10 pm Job Description: Engineering Technician II Job Description: Are you an experienced engineering professional looking for an exciting new opportunity? Currently, we are seeking a CMP Technician to join our team on 2 nd shift . In this role you will perform technical tests and experiments for process engineering within R&D. You will also process test runs and prepare records, charts, and graphs of results for presentation to the engineering team to identify yield problems or test new products . Duties & Responsibilities: • Owns experiment preparation activities, including wafer preparation (measurements - thickness and defects), log sheet preparation, recipe programming • Handles set-up and operation of polishers (Mirra, Reflexion ), cleaners and wafer metrology tools • Conducts polishing experiments using blanket and patterned wafers • Performs process and equipment troubleshooting activities during experiments, including identification of sources of polish variation • Owns data collection and analysis • Guides and provides recommendations to polish experiment feasibility and design based on hands-on experience • Actively participate in planning and execution of internal Cleanroom and product line based continuous improvement activities • Acts as a resource and collaborator with Engineers and Scientists • Finds opportunities to improve Cleanroom and experimental efficiency • Assists with evaluation and process development activities on new Cleanroom tools, including polishers, metrology equipment, or cleaning equipment • Keeps detailed records of experimental data and experimental methods, updating for improvements as they are made • Shares in responsibility for the safety of shift-coworkers Education & Experience: Education: Bachelor’s or Associates degree in an Engineering field is preferred. HS diploma or GED equivalent is required. Experience: • Proven knowledge and experience in CMP preferred • Experience working on engineering projects, or equivalent, required • Ability to operate and interpret results from wafer metrology equipment. • Defectivity metrology experience a plus. • Ability to interpret polishing end-point traces. Skills and Abilities: • Ability to operate in a highly independent manner • Tolerance of ambiguity • Strong skills in planning and organization • Attention to detail • Strong teamwork and communication skills • Highly accountable • Recognize and respond to customer needs in a collaborative efficient manner • Microsoft Office applications skills (Word, Excel, PowerPoint) required • Statistical analysis software skills a plus (JMP, Minitab, SAS) What We Offer: At Entegris, we invest in providing opportunity to our employees and promote from within. The new hire in this role will have the potential to grow and create relationships across the organization and be recognized for demonstrated success and adherence to company PACE values. 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. • Generous 401(K) plan with an impressive employer match. • Excellent health, dental and vision insurance packages to fit your needs. • Flexible work schedule and 11 paid holidays a year. • Paid time off (PTO) policy that empowers you to take the time you need to recharge. • Education assistance to support your learning journey. • Values-driven culture with colleagues that rally around People, Accountability, Creativity and Excellence. • Compensation range for this role depends on level of experience. Our starting compensation range for this role is $25 to $28 per hour. • Eligibility for annual incentive plan. 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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