Raspberry Pi Educational Apparatus Code Development

I'm looking for an experienced programmer to develop code for a Raspberry Pi system that operates an educational apparatus. This code will integrate with an existing GUI to run on an HMI touchscreen. The system needs to take inputs from various sensors (specifically a temperature sensor, flow sensor, and %CO2 sensor) and use these to control pumps. There's also a requirement for data to be downloadable onto a USB data stick.

Key Requirements:
- Proficient in Python, as this will be the language used for the Raspberry Pi system.
- Experience with Raspberry Pi and HMI touchscreen integration.
- Ability to develop a control interface for pumps.
- Skills in creating real-time data displays and graphical data analyses within a GUI.
- Knowledge of calibration procedures and how to incorporate these into a GUI.
- Capable of designing a system that allows for data to be saved onto a USB stick.

I would like the GUI to provide a range of functionalities:
- Real-time data display
- Control panel for pumps
- Graphical data analysis
- Calibration

This project would be ideal for someone with a mix of programming skills and experience with educational technology, particularly using Raspberry Pi systems.