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      S21sec

      Part of Thales

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      S21sec reviews

      Digital security company, great and smart people - Anonymous employee S21sec Employee Review

      3.0
      Jan 9, 2015
      Anonymous employee
      Recommend
      CEO approval
      Business Outlook

      Pros

      Great company for internships. Good R&D department. Very good atmosphere. Great people

      Cons

      A little disorganized and difficult to grow

      Explore other reviews about S21sec

      4.0
      Feb 4, 2026
      Penetration tester
      Recommend
      CEO approval
      Business Outlook

      Pros

      Good team, flexible work time

      Cons

      Wage is not u to industry

      4.0
      May 11, 2025
      Cybersecurity engineer
      Recommend
      CEO approval
      Business Outlook

      Pros

      Good working environment, good colleagues and in general a very pleasant atmosphere.

      Cons

      Few interesting customers in spain in terms of technology stack and few growth opportunities.

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