This issue is strongly related to the vision of your product and the capacity of your teams. If you wonder whether outsourcing Node.js brings you any benefits, think of lower development and operation costs, wider access to experienced developers and assured quality built thanks to understanding the key objectives and the platform itself. Also, if you don’t have an experienced team of Node.js developers at your disposal, it’s probably more profitable to outsource such a service rather than hire the whole team just for the development of one project.