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      3SI Security Systems

      Engaged Employer

      3SI Security Systems reviews

      They say the right things... - Marketing 3SI Security Systems Employee Review

      4.0
      Jun 19, 2025
      Marketing
      Recommend
      CEO approval
      Business Outlook

      Pros

      Great hybrid schedule - 1 day in office / week. Varies by department.

      Cons

      Not loyal to existing staff. It is a business, I understand, but there is no loyalty.

      Explore other reviews about 3SI Security Systems

      5.0
      Oct 10, 2022
      Internship
      Recommend
      CEO approval
      Business Outlook

      Pros

      Everyone that worked there was amazing and so friendly. The job provided so much hands on job experience. I was included in relevant discussions and issues.

      Cons

      I dont really have any cons from my time there.

      1.0
      Jun 9, 2026
      Anonymous employee
      Recommend
      CEO approval
      Business Outlook

      Pros

      Newly renovated office in PA

      Cons

      Leadership needs to be more engaged

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