Hi, my name is
Alexander Zylla.
Full-Stack IoT Developer
I build end-to-end IoT solutions — from embedded firmware on Zephyr and BLE/Zigbee devices to cloud platforms and web dashboards. Bridging the gap between hardware and software, one connected product at a time.
About Me.
A bit of background
I'm a full-stack IoT developer who thrives at the intersection of embedded systems and cloud software. From writing firmware for BLE and Zigbee devices on Zephyr RTOS to building the web platforms that manage them — I deliver connected products end-to-end.
At smart IoT I work on custommade connected products — hardware engineering, firmware, mobile apps, cloud infrastructure, and cybersecurity. 100% made in Germany.
Embedded & IoT
- ▸Zephyr RTOS
- ▸Bluetooth LE
- ▸Zigbee
- ▸C / C++
- ▸nRF Connect SDK
- ▸Silicon Labs (Blue Gecko)
Full-Stack & Cloud
- ▸TypeScript
- ▸React / Next.js
- ▸Flutter
- ▸Node.js
- ▸Python
- ▸Docker / AWS
Projects.
Some things I've built
Children's Audio Streaming Box
Connected audio player for kids with NFC-triggered playback. Implemented USB-C Audio Class driver and OTG management as well as Bluetooth Classic audio streaming for wireless speaker and headphone connectivity.
- Embedded C
- Bluetooth Classic
- USB-C Audio Class
- USB OTG
Bluetooth Smart Lock
Bluetooth-enabled smart lock. Developed BLE firmware on a Silicon Labs BGM module handling secure pairing, access control, and low-power operation.
- Embedded C
- Bluetooth LE
- Silicon Labs BGM
- GATT
Smart Gardening Solution
IoT-powered gardening platform. Built Zigbee sensor nodes on nRF for environmental monitoring, a cloud backend using Parse, and a cross-platform mobile app in Flutter for real-time data visualization.
- Zigbee
- nRF
- Parse
- Flutter
- Embedded C
RTLS Indoor Positioning
Real-time location system using BLE fingerprinting and trilateration for indoor asset tracking. Built a Django backend, a React web dashboard, and an iOS companion app for beacon setup and calibration.
- BLE Beacons
- Django
- React
- iOS
- Python
Enterprise Device Management Portal
B2B platform for fleet management of smartphones. Built a custom Android update engine, an OCM config app for bulk device settings management, a Django backend, and a React web portal.
- Django
- React
- Android
- Python
- REST API
Lab Climate Chamber Automation
Desktop application automating lab workflows for climate chambers. View device logs, create chamber programs, sign documents, and manage the full lab process — built with a Flutter desktop frontend and Django backend.
- Flutter Desktop
- Django
- Python
- REST API
- IoT
Experience.
Where I've worked
Head of IoT Infrastructure
smart IoT
Leading IoT infrastructure strategy — defining technical architectures, working directly with customers, and managing projects end-to-end. Overseeing connected product delivery from embedded firmware and wireless protocols to cloud platforms and cybersecurity.
Senior Software Developer
smart IoT
Drove technical decisions on Flutter mobile apps and cloud infrastructure for IoT products. Architected solutions spanning Zephyr RTOS firmware, BLE/Zigbee connectivity, and scalable backend services.
Full-Stack Developer
Ble Solutions
Focused on Bluetooth and embedded development — built firmware for a BLE smart lock on a Silicon Labs chip and worked on connected medical devices. Prototyped companion iOS apps in Swift.
Get In Touch.
Let's work together
Have an IoT project in mind? Need help bridging the gap between embedded devices and the cloud? I'm always interested in discussing new connected product ideas — from concept to production.