Pros
Zscaler offers ambitious, creative individuals the opportunity to be part of history in driving the company's disruptive direct-to-cloud network to overtake the stale, appliance-based model that dominates today's enterprise security space. In just 5 years, Zscaler has achieved a $1B+ evaluation, leader status in the Gartner Magic Quadrant for Secure Web Gateways, an enviable Fortune 500 customer base and a patent portfolio that will keep it in the innovation driver's seat for years to come. At Zscaler you are given the resources and the opportunity that any self-starter would kill for. Work hard, contribute to the culture and enjoy the ride. This company will IPO in less than 18-24 months and since there is very little dilution, employee stakeholders won't get screwed post IPO like they do at so many other companies.
Cons
Senior management has a low threshold for incompetence. Don't come to work here unless you want to kick ass and be the best at what you do. Low-achievers and slackers need not apply.