Each and every day you are presented with new and interesting challenges. I consider this a 'pro', but I understand it's not for everyone.
In the true startup spirit, Portnox runs lean. That means there are high expectations placed on everyone. There's also no place to hide for those who may be accustomed to skating by doing just the minimum required.
Change is constant and inevitable. For those who might be change adverse, Portnox could make you uncomfortable. Not all change is bad though. At Portnox, leadership takes responsibility for mistakes, learns from them, and addresses them quickly. Mistakes are a byproduct of experimentation, and without experimentation, Portnox would stagnate as a company.