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Process Engineer Intern (Year-Round)

Charter Manufacturing · Saukville, WI · Part time

Posted Sep 9, 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 used root cause analysis on a problem, in school or at work.

What they are checking: Whether they can apply root cause methods, which are central to this internship.

Tell me about a team project where you had to work with people from different backgrounds.

What they are checking: Collaboration skill, since the internship is built around cross-functional teams.

How will you manage part-time hours during the school year?

What they are checking: Reliability and time management for a year-round internship.

Why are you interested in steel manufacturing?

What they are checking: Whether their interest is real and specific enough to keep them engaged.

What would you do

You find data that suggests an operator is doing a step differently than the standard. What do you do?

What they are checking: Whether they investigate respectfully and consider that the standard may be the problem.

How would you present your findings to a plant manager who has five minutes?

What they are checking: Ability to be brief and clear about the problem, the evidence and the recommendation.

About the work

How would you collect data on a production process to find out why it varies?

What they are checking: Practical thinking about what to measure, how often and how to keep data reliable.

What statistical tools have you used, and what did they tell you?

What they are checking: Comfort with basic statistics like control charts or regression for real analysis.

What does Lean mean to you, and can you give an example of waste you have seen?

What they are checking: Understanding of Lean ideas beyond the textbook definition.

How comfortable are you in Excel, and what is the most complex thing you have done in it?

What they are checking: Readiness to handle data analysis tasks from the first week.

Practice this interview out loud.

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The full job description

As published by Charter Manufacturing.

Charter Manufacturing is a fourth-generation family-owned business where our will to grow drives us to do it better. Join the team and become part of our family! Charter Steel is a leading American supplier of carbon and alloy steel bar, rod and wire products, and the largest steel coil processor in North America. As a fully integrated steelmaker with locations in Ohio and Wisconsin, Charter Steel offers a full range of grade and size coiled products and vast technical service experience. About the Process Engineer Internship: Gain hands-on experience supporting manufacturing operations through root cause analysis, data collection and statistical analysis, and Lean continuous improvement initiatives. You'll partner with cross-functional teams to solve real-world engineering challenges and drive operational excellence. Program structure: • Schedule: Part-time (15-20 hours/week) during the academic year and full-time (40 hours/week) during the summer. • Location: Saukville, WI • Start Date: May 2027 • Duration: Year-round internship What we're looking for: • Enrollment in a four-year degree program in Industrial/Manufacturing Engineering or a related field with current status of at least a Sophomore standing. • Cumulative GPA of 2.75 or higher. • Proficient in Microsoft Office software: Excel, Word, and PowerPoint. • Strong verbal and written communication skills. • Strong interpersonal and relationship building skills. • Ability to succeed in a team environment. • Ability to handle multiple tasks. Preferred experience: • Basic Lean Manufacturing/Six Sigma Skills • Experience working in a manufacturing environment. What you'll focus on: • Work in the draw departments to improve production efficiency, product quality, and assist in the implementation of standards. • Performing time studies, working with operators on how to improve the process, and identifying root causes of production issues. • Process analysis and optimization What Sets Our Internship Program Apart: Work on meaningful projects while receiving mentorship, professional development, and networking opportunities that help launch your career. Our paid internship program also includes signature experiences like Charter's Intern Kickoff Day, volunteer opportunities, professional development workshops, and the Intern Summer Showcase. #LI-AF1 #LI-Onsite #CharterSteel Internship positions are not benefits-eligible.

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