Seeking Experts to Develop QR Code Product Scanning System with Database Integration and User App

Description:
I am looking for skilled professionals to help build a system that includes both hardware and software components. The goal is to create a complete solution that can:

Scan QR Codes: A hardware device with an integrated QR code reader.
Communicate with a Database: The device will send scanned data to a cloud-based database via Wi-Fi.
Display Product Information: The scanned data will be shown on a user application and a hardware display.
Provide Audio Feedback: The hardware will include a speaker for notifications or feedback.
Key Requirements
Hardware Development
Selection and configuration of QR code scanner, display screen, speaker, and Wi-Fi module.
Integration of hardware components using platforms like Raspberry Pi, Arduino, or other suitable alternatives.
Backend Development
Design and implementation of a database to store product information (e.g., MySQL, MongoDB).
Development of secure and efficient APIs for data exchange between the hardware, database, and user application.
Frontend Development
Creation of a user-friendly mobile app (iOS/Android) to display product details in real-time.
Development of a responsive UI for the hardware’s display screen.
System Integration
Seamless communication between hardware, database, and app.
Implementation of security protocols for data transmission.
What I’m Looking For
I’m open to hiring individuals or a team with expertise in the following areas:

Hardware Engineering and Embedded Systems
IoT Development and Hardware-Software Integration
Backend Development (Database Design, API Development)
Mobile App Development (Android/iOS)
System Architecture and Full-Stack Development
Experience with similar projects (QR code systems, IoT, or smart devices) is highly preferred.

Deliverables
Fully functional hardware prototype with the listed features.
Backend system (database and APIs) to process and store data.
Mobile application with a clean and intuitive UI.
Documentation for all components for future scalability.
If you’re confident in delivering this solution or providing guidance on the best approach, please share:

Relevant experience and past projects.
Proposed timeline and milestones.
Estimated cost for consultation or full development.