Advice on cloud platform to implement Home automation, Remote Patient Monitoring

Job ID: 33311660

Budget: €30 – €250 EUR

I would like an advice on which PLATFORM should I use to implement an upcoming project.
I need to implement a home automation using Alexa, Remote patient monitoring and elderly care.
I need to upload data from SPo2 meters, Heart pressure meters etc for remote patient monitoring.
I will use emergency button wearable for elderly (BLE or Zigbee) .
The target is to develop one mobile app that we can receive notifications (via cloud) for example if emergency button pressed. We should be able to read room temperature, lights, doors etc.
Also is needed to develop a desktop app on which I could get analytics, for example how many times during week a specific motion detector was triggered, etc. Via this dashboard I should also to be able to read-display all sensor states.
The freelancer that will come up with the best suggestion, will be able to work on the upcoming project for those described above.
Alexa, home assistant cloud, AWS iot core, IFTTT, AYLA, thingsboard , MQTT, are “things” that would be appreciated if you are familiar with.