Unfortunately, things are getting worse....
Verbesserungsvorschläge
While the tech is still good, the people made Zscaler successful. Take care of them.
Arbeitsatmosphäre
Highly depends on your manager. But, also managers have either very limited means to change anything (again: top down), or are indoctrinated very well...
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Not the best, customer often complain about frequent changes in the account team, or Zscalers arrogant and annoying way of doing what they call "business".
Work-Life-Balance
You are a resource, just like office supplies. If your life is not Zscaler, you can have a bad time.
Karriere/Weiterbildung
If you are close to management and don't have an own opinion, you can get far.
Gehalt/Benefits
I would say it's industry standard.
Umwelt-/Sozialbewusstsein
Flying around for meaningless 1hr meetings is fine!
Kollegenzusammenhalt
That's what Zscaler used to be, and still is in a very limited extent (e.g. your direct team members).
Umgang mit älteren Kollegen
Not sure, guess it's OK. But the older you get, the more you usually value your personal life. That does not fit the culture.
Vorgesetztenverhalten
If you are lucky, it's OK.
Arbeitsbedingungen
A joke.
Shared offices are tiny, stuff you need to do you work are limited to ridiculous $ amounts or specs (if they could, they would limit monitors to SVGA).
Kommunikation
Communication is usually top down. Any criticism is either put down with the argument “how would YOU do that?” or “You all earn at shit load of money!"
Interessante Aufgaben
In the end, it's still a web proxy. Everything that's interesting will be handled by "special teams".