Hi!

   Being hired as a product manager is to maintain the quality product carries along with improving what is missing. Understand the product, its market, competitors, its need and cost factors. Internally understand your team and strength each member carries. If it is not agile, it is on a high risk, so have daily to weekly meetings on that status, use team and task management software to target the deliveries. 

Responsibilities always encourage to meet it!  It is sure that, it will be a great fun!

Thanks,

*FJC