The best region to outsource mobile app developer expertise is Latin America, and your company can find mobile app developer expertise by:
Use freelance platforms like Upwork, Freelancer, or Guru.
Hire through staff uugmentation companies like Jalasoft
Network on professional sites like LinkedIn or Stack Overflow.
Attend industry events or tech conferences like Web Summit or TechCrunch Disrupt.
Seek referrals through platforms like LinkedIn or industry-specific forums such as Clutch