IoT (Internet of Things) refers to physical objects equipped with sensors, electronics and a network connection, able to collect data and transmit it to other systems.
A complete IoT system spans several layers:
- the device: sensors, microcontroller, embedded software, power management
- connectivity: Wi-Fi, Bluetooth Low Energy, cellular networks, LoRaWAN
- the platform: receiving, storing and processing data, often in the cloud
- the application: dashboards, alerts, remote control
It shows up in the connected home, but above all in industry (predictive maintenance, machine monitoring), energy (smart meters), healthcare (monitoring devices), logistics and agriculture.
IoT's specific challenges are securing large numbers of poorly protected devices, power consumption, remote updates and data volume.
Why it matters when hiring
Hiring in IoT means hiring at the boundary between hardware and software, and few profiles cover the whole chain. Identify the layer you are missing: electronics and embedded, connectivity, or cloud and data platform. A web developer does not become an embedded engineer in a few months. The right signal: having deployed devices in the field, with their power and update constraints.