Process Engineer
Posted Oct 2, 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
This role focuses on selecting and specifying field instruments like valves, sensors, analyzers and transmitters. What draws you to instrumentation and controls?
What they are checking: Whether they understand and want the I&C focus, not PLC programming or panel design, which this role excludes.
Tell me about a project where you had to apply a code or standard you had not used before.
What they are checking: Whether they can find, read and apply unfamiliar codes and customer specifications with growing independence.
Tell me about a time you worked on a team deliverable with a hard deadline.
What they are checking: Whether they can contribute reliably to proposals and project deliverables that have fixed due dates.
What would you do
You are reviewing vendor documentation and the submitted valve does not match the specification. What do you do?
What they are checking: Whether they catch mismatches and raise them clearly before equipment is ordered or installed.
A lead engineer gives you a calculation to check, and you get a different answer. How do you handle it?
What they are checking: Whether they can respectfully challenge a senior engineer with their work shown instead of staying quiet.
How do you keep track of revisions when a customer changes requirements halfway through a project?
What they are checking: Whether they manage change carefully so outdated specs do not end up driving purchases.
About the work
How would you choose a flow meter for a process line? What information would you need first?
What they are checking: Whether they know to gather fluid properties, flow range, pressure, temperature and accuracy needs before picking a device.
What goes into an instrument data sheet, and why does each detail matter?
What they are checking: Whether they understand that data sheets drive purchasing, and a wrong detail means the wrong part arrives.
How would you build an instrument list or equipment schedule so others on the project can trust it?
What they are checking: Whether they think about consistency, tag numbering and revision control in shared engineering documents.
Walk me through how you would size a pump or a pipe for a given flow rate.
What they are checking: Whether they have the basic process calculations that lead engineers will ask them to support.
What engineering software tools have you used, and how did they help your work?
What they are checking: Whether they can use the software tools the posting mentions to speed up calculations and documentation.
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As published by JBT Marel.