ESP32 Device Connection & Data Visualization Software Development

I'm looking for an engineer to assist in connecting an ESP32 device to a desktop, with the capability to display data in a visually appealing manner according to specific requirements. The firmware is available via Arduino, but it may require further iterations. ESP32 may change to custom MCU in the future

Key Responsibilities:
- Connect the ESP32 device to a desktop
- Visualize data using various types of graphs
- Optimize existing Arduino firmware as necessary

Future Development:
- Design a cross-platform desktop application to connect multiple sensors and visualize data on a dashboard
- Potentially develop this into a mobile or web application

Ideal Candidate:
- Proficient in Arduino and ESP32
- Experience in desktop application development for Windows, MacOS, and Linux
- Skilled in data visualization and creating user-friendly interfaces

Please provide a proposal detailing your approach, required budget, and timeline for each milestone.