Field Service Engineer
Posted Aug 6, 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
Walk me through a system installation and commissioning you handled from arrival on site to handoff.
What they are checking: Whether they understand the full sequence of mechanical, hydraulic, electrical and controls work on a real install.
You will lead the customer's maintenance crew and contractors on site. Tell me about a time you led people who did not report to you.
What they are checking: Whether they can earn cooperation and keep control of a job site through respect and clarity.
How would you train customers and staff in both a classroom and hands-on at the machine?
What they are checking: Whether they can explain complex equipment simply and check that people actually learned it.
What would you do
The project is running over budget because of an issue nobody planned for. How do you handle it with the project team and the customer?
What they are checking: Whether they raise problems early and honestly instead of hiding overruns until the end.
When you are not on a customer site, you support platform testing and other departments. How do you stay useful between trips?
What they are checking: Whether they can shift into in-house work productively rather than treating home time as downtime.
How do you handle a customer who is unhappy with how the equipment is performing after install?
What they are checking: Whether they listen, find facts and protect the relationship while solving the real problem.
About the work
An intensifier on an ultra-high pressure system is leaking. How do you approach it safely?
What they are checking: Whether they respect stored energy at up to 120,000 psi and isolate and depressurize before any work.
How would you troubleshoot a directional valve that is not shifting on a 3,000 psi hydraulic system?
What they are checking: Whether they check electrical signal, pilot pressure and spool condition in a sensible order.
How comfortable are you going online with ControlLogix using RSLogix 5000 to diagnose a fault?
What they are checking: Whether they can read ladder logic and trace inputs and outputs, not just reset faults and hope.
You are working on systems from 24VDC to 480VAC. What are your lockout and electrical safety habits?
What they are checking: Whether they practice verified isolation every time, since high voltage leaves no room for shortcuts.
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Practice this out loudThe full job description
As published by JBT Marel.