I would like to hire a Microcontroller Developer

I want to build a microcontroller to controll wireless sensors and these values ​​store locally and on a server and visualize. Currently the project is based on the arduino ide and many of the sensors already work. Everything must be controllable via tablet or a touchscreen local. The Sensors are PH/EC/Soil moisture/ultrasonic water level / temperature/humidity/ co2 the following Sensors are working PH/EC/Soil moisture/ultrasonic water level / temperature/humidity co2 is working but not for 100% the ph senor is a EZO™ pH Circuit [login to view URL] the ec senor is a EZO™ Conductivity Circuit [login to view URL]!/EZO%E2%84%A2-Conductivity-Circuit-EZO-EC/p/35906061 the co2 sensor is a COZIR Ambient 2 ( in one sensor unit are 2 sensors the second sensor is online power for calibrate the other every day) [login to view URL] temperature and humity is a dht22 the ultrasonicsensor is a HC-SR04 Each sensor can be exchanged by another if this is better for this application! Each value of each module must be collected by a master module, preferably 433 mhz, and stored locally and transferred to a server. Every adjusted value / offset must be retained after power failure. Each sensor is a separate unit. With one display and 3 buttons to set the address and offset or other values. the ph /ec Modul needs a display. minimum 3 buttons 1 to go to next menü and the other for change sensor adress and ( in cal menü 10 sec press button plus for calibrate ph sensor 10 seconds to calibrate ec sensor booth 1 point (code for calibration is in the atlas sample code) The co2 module requires 1 display and 3 buttons. Every day sensor 2 has to calibrate with its value sensor 1 with its value and 3 minutes warmup. Otherwise sensor 2 must be de-energized if it is not needed for calibrating. A point in the menü must be selectable for calibrating at 450 ppm of both sensors with 3 minutes warmup. and one point in the menü to the address of the modul. another ponit in the menü must be adjustable point x ( between 500-1500ppm) from sensor 1 below a relay must be switched on (and off above) (minimum 10 ampere 230volt ac) And a point will be required to automatically switch off after an ON time x (1min to 60min) The co2 module was addressed by me about softwareserial and communication works also ready inclusive calibrate at 450 ppm The air humidity module requires 3 buttons with one display. For addressing the module and setting an offset for temperature and air humidity The ground moisture module requires a display and 3 buttons. 1 for menu 2 for settings. It must be possible to set a relay (230 volts ac 16 amp) if a value x is fallen below. It must also be possible to set a switch-off point which must not be adjustable below the switch-on point. And a point will be required to automatically switch off after an ON time x (1min to 60min). The ultrasound module needs 3 buttons and 1 display. It must be possible to adjust the following. Calibrate tank with level 1 liter. Calibrate container filled. And maximum content (for example, 1-1000 liters) The module must calculate how many liters are present in the tank. The touchscreen / tablet must have the following settings. The individual values ​​/ offsets The number of sensors per type to prevent unnecessary interrogation and speed up communication. All current values ​​must be displayable. The values ​​of the sensors must be stored for one minute every minute. Ph / EC / Temp / Co2 soil moisture / air humidity. A diagram must be displayed selectable values ​​last minute / last hour / whole day values ​​ph ec temp co2 ground moisture air humidity must be on and off selectable. For all modules, only one functional modul pro type has to be built. No PCB: All prototypes must be ready and installed. SOFTWARE AND HARDWARE. Money for material and costs is gladly already paid before.