Comment by Mikho

In every situation in a new environment, the best way is to just listen more and talk less -- pretty fast you'd get the social dynamic without pretending to be someone you are not or trying to wrongly impress people. And -- important -- keeping to yourself your weak spots during the timeframe when people form their opinion about you.

Soon you will see what the main struggles are in the company, who opinion leader is, and what the product development dynamic is. Only then, when you figured out the playing field and all mines you may start talking more if you really have something to say.