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      3SI Security Systems

      Engaged employer

      3SI Security Systems reviews

      Growing company - Marketing 3SI Security Systems Employee Review

      4.0
      Nov 6, 2025
      Marketing
      Recommend
      CEO approval
      Business outlook

      Pros

      Fast-growing company; opportunities for growth; good compensation and benefits

      Cons

      Going through some growing pains but they will get past it.

      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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