Founder @ Catalyzer Startup Accelerator, Founder @ Project Ajahn, Founder @ EcoKoncepts, Advisor @ ADC2 Technologies Corporation, Advisor @ Adhya Educational Society. I am interested in supporting global startups with focus on India market.
The ideal way would be to hire the engineer while the project is still under development. You and the engineer should follow up with the outsourced partner in the process. This will give hold to the engineer and later more staff can be trained in upgrading or follow on versions of the product/service.