Process Engineering Intern
Posted Sep 30, 2026 · We last checked this listing on Oct 6, 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 project where you used data to improve a process.
What they are checking: Whether they have real problem-solving experience they can bring to plant projects.
Tell me about a time you worked with people who had more experience than you.
What they are checking: Whether they can learn from experienced engineers and operators while adding value.
Which of IFF's values, like integrity or innovation, matters most to you, and why?
What they are checking: Whether they connect personally with the values the posting asks interns to follow.
What would you do
IFF makes food ingredients. How might food safety rules affect a process change?
What they are checking: Whether they understand that changes in food plants must protect safety and quality.
An operator tells you your idea won't work on the floor. How do you respond?
What they are checking: Whether they listen to operators and treat their input as valuable.
About the work
What do you know about Six Sigma, and how would you use DMAIC on a manufacturing problem?
What they are checking: Whether they understand the method this internship uses for project work.
How would you find the bottleneck in a production line?
What they are checking: Whether they can analyze flow and find where capacity is limited.
How would you approach a capital project you were assigned, like adding new equipment?
What they are checking: Whether they can think about cost, timeline and safety for a capital project.
Which tools have you used, like Excel, Minitab, MATLAB or AutoCAD?
What they are checking: Whether they bring skills that help with analysis and design work.
How would you present your project results at the end of the summer?
What they are checking: Whether they can share findings clearly with business leaders.
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Practice this out loudThe full job description
As published by IFF.