IoT & Cloud Connectivity - Networked Embedded Systems

Modern embedded systems are increasingly defined by their ability to connect, communicate, and collaborate. Whether you are building a smart building sensor network, an industrial predictive maintenance system, or a fleet of agricultural IoT devices, the bridge between your hardware and the cloud is critical. Poor connectivity design leads to data loss, security vulnerabilities, and costly field updates.

I specialize in building secure, scalable, and maintainable IoT architectures from the sensor node to the cloud dashboard.

IoT Gateway Development

The gateway is the nerve center of any IoT deployment. It aggregates sensor data, manages local processing, and relays information to the cloud. I develop gateways on platforms like ESP32, STM32/NXP with Wi-Fi/Bluetooth modules, Raspberry Pi, and Linux-based SoCs.

ESP32 LilyGO – Ideal for IoT gateway prototyping with WiFi, Bluetooth and LoRa.

Key features I implement:

  • Protocol translation — bridging Zigbee, Z-Wave, Modbus, or CAN to MQTT/HTTP.
  • Edge processing — filtering and aggregating data locally to reduce cloud costs.
  • Offline buffering — storing data locally when connectivity drops and syncing on reconnection.

Cloud Integration (On-Premise, AWS IoT, Azure IoT, Google Cloud IoT)

Connecting your device to a cloud platform unlocks remote monitoring, analytics, and device management. I have hands-on experience with:

  • MQTT/REST/GraphQL APIs — On-Premise, everything under your full control.
  • AWS IoT Core — device shadows, MQTT topics, and IoT rules for data routing.
  • Azure IoT Hub — device twins, direct methods, and automatic device provisioning.
  • Google Cloud IoT Core — MQTT bridge, device registry, and Cloud Pub/Sub integration.

Every integration includes retry logic, exponential backoff, and connection health monitoring to ensure robust operation under real-world network conditions.

Secure Data Transmission (TLS/SSL)

Security is not an afterthought in IoT — it is a fundamental requirement. I implement:

  • TLS 1.2/1.3 for all device communication.
  • TLS performance optimization e.g. boosting TLS hardware acceleration for XMC7200 with +33% faster than the Infineon library with full compatibility.
  • Certificate-based authentication using X.509 certificates or pre-shared keys (PSK).
  • Secure boot and firmware signing to prevent unauthorized code execution.
  • Encrypted storage for secrets, keys, and configuration data on the device.

I also conduct threat modeling sessions early in the design phase to identify and mitigate attack vectors before they reach production.

Over-the-Air (OTA) Updates

Field devices must be updatable. OTA updates allow you to fix bugs, patch vulnerabilities, and add features without physical access. I design OTA pipelines that include:

  • Delta updates — transmitting only changed binaries to minimize bandwidth usage.
  • Rollback protection — keeping the previous firmware version for safe fallback.
  • Staged rollouts — updating devices in batches to catch issues early.
  • Integrity verification — SHA-256 checksums and cryptographic signatures on every update package.

Data Visualization & Dashboards

Raw sensor data is useless without actionable insights. I build dashboards and visualization layers using:

  • Grafana with InfluxDB or Prometheus for time-series monitoring.
  • Node-RED for rapid prototyping of data flows and low-code dashboards.
  • Custom web frontends (React, Vue.js) for branded user interfaces.
  • Real-time WebSocket feeds for live sensor updates.

Each dashboard is tailored to your domain — whether that means temperature trends for cold chain logistics or motor vibration analysis for predictive maintenance.

Let Us Connect Your Devices

From a single prototype to a thousand-device deployment, I deliver end-to-end IoT connectivity with production-ready code and support in English, Italian, or German.

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