
Johnson Controls Field / Application Engineer Interview Questions
& Process
Real candidates share what happened, how many rounds they had,
and how the experience turned out.
Based on 29 interview experiences · FREE TO READ
Candidate interview experiences
First-hand accounts from people who interviewed at Johnson Controls.
Application Engineer
So I interviewed for the Sr. Application Engineer job at Johnson Controls. It was a good experience overall. They had 3 rounds: first a virtual technical interview with the Delivery Manager (L1), then another virtual technical interview with the Engineering Manager (L2), and finally a tool test with a face-to-face interview with both managers (L3). The whole thing took less than a week and they sent the offer after the background checks. It was pretty efficient and the team was professional. Great experience!
- Could you answer some questions about fire alarm system design according to NFPA 72?
Field Engineer
You didn't get the job at Johnson Controls because of sponsorship requirements. Companies often have their own rules about work visa sponsorship. It's good to be upfront about needing sponsorship when you apply and keep looking for other jobs. Networking and talking to immigration or career experts could also help.
- Tell me about your experience with [specific technology or software relevant to the role]?
- How do you go about fixing technical issues you find in the field?
- Can you share an instance of a tough project or issue you faced as a field engineer and how you sorted it out?
Applications Engineer
The recruitment team was really efficient and scheduled everything considering my availability. The first round had a good mix of technical questions, quantitative assessments, and aptitude tests. The second round was all about technical evaluation. The HR round was the last step, and I was happy to get an offer with a good package. They were very professional and organized, making me feel confident about growing my career at Johnson Controls.
- Could you explain your knowledge of HVAC systems, specifically AHUs, FCUs, and VAVs?
- What are your thoughts on the basic aspects of the controls part of these systems?
Johnson Controls Field / Application Engineer Interview Questions
Quoted word for word from Johnson Controls interview reports.
“As per NFPA standards, what should the pump suction velocity be?”
Read reports →“Can you explain how a 4-wire RTD sensor is wired?”
Read reports →“Can you explain everything about AHU and its related equipment?”
Read reports →“How would you approach C code questions using flowcharts?”
Read reports →“Can you provide an example of a ladder type PLC program?”
Read report →“Can you discuss technical details related to brake systems?”
Read report →“Could you answer some questions about fire alarm system design according to NFPA 72?”
Read report →“Can you discuss systems level, system network, and raiser in detail?”
Read report →“How do you keep up with what's new in field engineering tech and industry changes?”
Read report →Formats, difficulty and experience
Across all 29 Johnson Controls interview reports.