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      Software Engineer Interview

      16 Aug 2019
      Anonymous interview candidate
      McLean, VA
      No offer
      Neutral experience
      Average interview

      Application

      I applied online. The process took 4 weeks. I interviewed at Alarm.com (McLean, VA) in Apr 2019

      Interview

      This process was a few months ago, so apologies if I forget anything. The interview process starts with a short HR screening and then an online assessment through Hackerrank, I don't remember exactly what my question was but I didn't think it was difficult. After that they asked for my college transcripts. I was then directly moved on to the onsite interviews at their headquarters. The onsite consisted of 4 interviews, plus lunch with two junior engineers. The first interview was a design question, the second was a straight Leetcode one (two questions, neither were very difficult). After lunch (which was a casual sort of environment with the two engineers, basically just chatting about their work and all that) was my third interviewer, who was absolutely awful and really the sole reason I'm leaving a review. She came in late, and seemed very flustered and new to interviewing. She proceeded to whip out a literal notebook containing her interview questions, in plain sight of me on the table. First question: "do you know FizzBuzz?" I answered yes, because literally everyone knows FizzBuzz and I didn't think she was asking me to do it. Then she acted surprised and said she was going to ask me to solve it. Yikes...then she seemed very flustered because she didn't expect me to know FizzBuzz, and moved onto a very contrived and unclear piece of pseudocode she came up with on the spot. She kept changing what she was asking when I asked for clarification, because it was clear this wasn't a question she had beforehand (in a notebook of interview questions, she really basically only had FizzBuzz?). Eventually it became clear she was asking about inheritance, but her example code was really poorly written. After that, she was fresh out of technical questions (and admitted it) so she just started asking me about my project experience to "fill time". Finally, my fourth interview was pretty short. He just asked another design question, and that was it. The process was fairly smooth with HR, and my recruiter contact was a nice guy and pretty responsive. All my interviewers were nice and good to talk to, even though the third interviewer was a bit of a mess. The office seemed pretty hip and had some standard tech company amenities, and I appreciated being taken out to lunch. Now, that being said, I still have to wonder if I would have received an offer if I had just pretended I had never heard of FizzBuzz before...

      Interview questions [3]

      Question 1

      Design questions: design a parking garage, design an elevator system
      Answer question

      Question 2

      Algorithm questions: coin change to make a certain value (greedy algorithm works for this one), given an array of numbers, find the max span of indices between two numbers
      1 Answer

      Question 3

      General coding questions: debugging for issues caused by pass by reference vs pass by value, a question about using inheritance
      Answer question
      6

      Other Software Engineer interview reviews for Alarm.com

      Software Engineer Interview

      26 Mar 2026
      Anonymous interview candidate
      No offer
      Neutral experience
      Average interview

      Application

      I interviewed at Alarm.com

      Interview

      Initial recruiter screen, mostly behavioral and past projects and discussion of background. Friendly process thus far. Recruiter was very nice. Only did the first initial phone screening thus far. Hopefully will get a call back.

      Interview questions [1]

      Question 1

      What is a past project that you worked on?
      Answer question
      1

      Software Engineer Interview

      28 Mar 2026
      Anonymous interview candidate
      No offer
      Positive experience
      Average interview

      Application

      I applied online. I interviewed at Alarm.com in Mar 2026

      Interview

      I completed a recruiter screening. It was a positive experience with standard questions about my experience and skills. Conversion was straightforward and focus on my resume, technical background and career goals.

      Interview questions [1]

      Question 1

      Tell me about your background.
      Answer question

      Software Engineer Interview

      8 Aug 2025
      Anonymous interview candidate
      Tysons Corner, VA
      No offer
      Negative experience
      Average interview

      Application

      I applied online. The process took 3 weeks. I interviewed at Alarm.com (Tysons Corner, VA) in May 2025

      Interview

      Steps were: OA -> HR Screen -> Phone Interview -> In Person Interviews (3 back to back) When I arrived at one of the engineering areas for the in person interview, I was struck by the atmosphere. Most of the engineers at their cubicles seemed disinterested and had unpleasant expressions. Many of the engineers were on their phones, appeared bored, one even looked upset. There was a sectioned off area for interns which I found a bit strange considering it was decorated for children (and I wasn't surprised to find they were just on their phones with their shoes off and feet on the chairs). I found this extremely distasteful since myself and many others I knew worked extremely hard for internships during university, and it appears they are given to children who it seemed don't care or value them. The first interviewer seemed as though they did not want to be there, and came in unprepared which wasted time and made me feel unwelcome. To me it appeared as if they did not even want me to succeed, which set a negative tone for the rest of the interviews. From this I got a pretty big wave of performance anxiety which carried out to the other in person interviews, to where I eventually mostly gave up trying half way through. The last interviewer asked probing questions about my most recent work experience project, and I ended up just lying and saying someone else worked on it and I didn't know the details which was untrue. The first interview task was relatively simple and I was disappointed in myself for not being able to fully complete it, although I would like to mostly write it off to the interviewer not being welcoming, and we ran out of time at the end just as I started getting the hang of it. To top it all off, the same first interviewer gave me a snarky comment at the end of the interview, saying something along the lines of "You said you had a few weeks of experience?". I never said this, I have a little over a year at this point. I do not believe I was the only one who had a terrible experience with the manager, since a week or two after being denied, I found the same position reposted. If you want the best performance out of the people you are interviewing, I'd suggest creating a more welcoming environment. It was bittersweet to have been declined a week after the interview since I genuinely was interested in the position (a rarity for me), and I felt I connected and aligned with one of the other managers I interviewed with who seemed like a real mentor, and would have still seriously considered accepting the position even after the negative experience. Some pros: -Quick responses from the recruiter, although a tad slow at times when asked what the next interview would consist of. -Most people I interacted with were very nice and friendly. -Their system for scheduling online and the in person interview was smooth. -Their HQ was neatly decorated and had a great vibe. Overall: If you hate your job and enjoy being on your phone all day at work, I would say this is the team/role for you! And to be completely fair, I can't speak for the other teams or positions, only my own experience for this particular one.

      Interview questions [1]

      Question 1

      Basic and simple software engineering questions, there wasn't anything too specific or difficult.
      Answer question

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