
DMC Automation / Controls Engineer Interview Questions
& Process
Real candidates share what happened, how many rounds they had,
and how the experience turned out.
Based on 27 interview experiences · FREE TO READ
Candidate interview experiences
First-hand accounts from people who interviewed at DMC.
Automation Engineer
Got an on-campus interview after a career fair chat that I didn't think went great. The on-campus interview was virtual, and I had to answer technical questions on a blackboard site. The questions were pretty easy. Then, they invited me for an in-person interview in Chicago. This included a tour, three rounds of technical questions, and lunch. I didn't hear back about the final decision until at least a week after they said I would. Overall, the interviews are way more technical than behavioral. They give you a few problems on paper and expect you to explain how you'd solve them.
- Could you write pseudocode for an algorithm that adds or subtracts a number based on the input?
- Describe the process for designing a confetti cannon that would activate at the finish line of a model racetrack when the first-place car crosses.
- How would you consider potential sources of error, like someone unexpectedly crossing the track near the finish?
Automation Engineer
I interviewed for an Automation Engineer role at the Houston office. Just a heads-up on this one. The process kicked off with a 1-hour online whiteboard technical interview covering general engineering and coding. Then, there was a final ~4-5 hour block which included a technical physics/engineering part, a debugging section, and a general behavioral part, each with different interviewers. Most of the experience was great, and people were generally nice and friendly. BUT, after the final round, I had a follow-up call with the hiring manager who was quite insulting, which was really unexpected and disappointing. Honestly, I'm glad it didn't work out and I won't be applying here again.
- How would you troubleshoot an industrial system if the indicator LED wasn't lighting up, given an image and system brief?
- Can you explain concepts related to pressure and velocity profiles within a pipe?
- Could you answer some basic questions about ladder logic?
Automation Engineer
So I had this interview, first with HR. It was about 30 mins of basic screening questions, then another 30 mins for a 4-question exam taken over webcam. They said it tested "fundamentals of an engineering education" - like, one simple math problem, a pseudocode problem, a fermi estimation, and then this random question about building a fridge control system. I think I did okay, maybe a little math error 'cause I only had like 7.5 mins per question. Got a generic rejection email a week later. Annoyed 'cause I actually know the software they use and they didn't ask about it, just this rushed technical test.
- What is your approach to designing a control system for a refrigerator?
DMC Automation / Controls Engineer Interview Questions
Quoted word for word from DMC interview reports.
“Regarding a brick and a balloon submerged in water at depth h1, what happens when they are moved to depth h2?”
Read reports →“Regarding a stationary balloon in water, would it go up or down if you push it down?”
Read reports →“Write pseudocode to output a number if the input is x and a different number if it is not x.”
Read reports →“What is the equation to find the force to tip over this box?”
Read reports →“Given a plot of an encoder's A and B phases, can you reconstruct the code from the waveforms?”
Read report →“How many balloons do you think would fit inside a college dorm room?”
Read report →“How many golf balls would fit in a school bus?”
Read report →“Given an [NxN] matrix where black is 0 and white is 1, write code to estimate the center of a white circle within a black square.”
Read report →“Given a 2D NxN array representing a black and white image with a solid white circle on a black background (0=black, 1=white), can you write a program to find a reasonable approximation for the center?”
Read report →Formats, difficulty and experience
Across all 27 DMC interview reports.