Hi,
I have a few questions to better understand your project needs. Could you clarify if the job packs will be stored in a cloud service or locally on the device? Also, do you have a preferred framework for developing the platform, or are you open to suggestions? Based on your requirements, I believe we can build a robust solution for storing client data securely, integrating appointment scheduling, and ensuring engineers have easy access to their job packs. With skills in PHP, MySQL, mobile app development, and website design, I can ensure that the platform is efficient, user-friendly, and scalable. Let's start a chat to dive deeper into the technical details!