I'm a PHP and React-Native engineer with more than 20 years of experience assisting businesses' growth:

• To ensure secure server-client communication, I sign JWT keys with HS256 algorithms and give them  short lifespans to ensure frequent renewal.

• I am extremely careful with the available resources. For apps that utilize GPS, for instance, I create a pull-request on the server that only activates the mobile sensors when necessary. And in the case of the device, I do not activate it until my algorithms detect substantial motion (through the Haversine Formula).

• I am accustomed to collaborating with service and API providers like Apple, Google, and Microsoft, so I am familiar with their policies and security concerns. I take their compliance very seriously by utilizing recommended best practices, secure protocols, and implementing hack-proof servers with the help of ethical hackers.