Michael Kraft
Developer
Experience
Bytec Medizintechnik
First successful solution by intensive filtering of analog signals in hardware, which reduced noise but drastically increased power consumption, cutting battery life from one year to about 10 days.
Proposed and implemented a combined high-speed sampling and digital firmware filtering solution, which extended calculated battery life to approximately 18 months.
Provided ongoing support through first clinical tests and TÜV approval for the final filaxOne device.
Developer
Azorean Biodiversity Group CE3C, University of the Azores
- Developed a pilot project for real-time communicating insect traps.
Co-founder
JSIO Lda
Developed a platform-independent interface to simplify and reduce the cost of new IoT hardware development.
Designed and launched a Modular Driver System (MDS) enabling standardized driver framework integration, automatic backend connectivity, and support for edge computing, AI, and ML modules.
Used JSON exclusively as the data protocol to allow configuration by web developers with JavaScript or Python skills.
Prototyped on Espressif 32-bit MCUs, with firmware portable to embedded-Linux systems.
Secured ESA BIC Portugal funding in September 2023.
Developer
ImpactWave
Developed a measurement device for LoRa(WAN) applications to optimize existing networks and detect planning weaknesses.
Designed hardware with Semtech LoRa module (433, 868, 915 MHz), RISC-V MCU with BLE radio and USB interface.
Created a native BLE Android mobile app with complex UI; later ported to iOS.
Implemented JSON-based USB (CDC ACM) communication via a custom Python module for user programmability.
Delivered the project independently.
Developer
Q-Connex
Analyzed undocumented low-cost Chinese SoC components to enable firmware development.
Developed firmware in C++ featuring TLS-protected TCP sockets, integrated MQTT server & client for simultaneous backend and mobile app connections.
Added UDP socket for provisioning broadcasts to facilitate device and app discovery.
Firmware Developer
Plexus
Developed an embedded USB high-speed driver for the X-act® 7000 device from Dräger using an ARM Cortex-M4, handling synchronized video data and control protocol up to 80% USB bandwidth.
Implemented the driver in C++ and integrated it into the device’s µC-RTOS.
Developed a Windows application for unit and production tests.
Firmware Developer and Interim CTO
3onics Systems Inc
Developed battery-powered DC motor control on ESP32-C3 with a self-learning, fast-adapting algorithm for precise speed regulation under variable conditions.
Integrated Bluetooth BLE GATT server for data transmission and Android/iOS app control.
Created a genetic algorithm (AI) in firmware for control optimization.
Served twice as consultant and interim CTO for production.
Firmware Developer
Società Italiana di Biologia Marina
Developed an underwater audio recorder with hydrophone, 24-bit delta-sigma ADC, and up to 220 kHz sample rate.
Implemented a ring buffer for 80 seconds of continuous audio recording and triggered SD card logging.
Designed a custom memory-management scheme for FAT32 filesystem to handle high data rates and prevent fragmentation.
Summary
Experience in software and firmware development:
- Programming languages: C and C++ (20+ years), Java and Embedded Java (2 years), Kotlin (2 years), Rust (1 year), C# (1 year), various assembly, scripting languages: Python (4 years), JavaScript/TypeScript (4 years), LUA (1 year)
- RTOS: FreeRTOS, µC/OS, embOS, mbed OS, Zephyr, VxWorks
- Bare metal: ARM Cortex M4 (STM), processor-optimized audio DSP applications
- Microcontrollers: ARM Cortex M0 to M7 (STM, NXP, Infineon, etc.), AURIX (Infineon), ESP32 (Espressif), RISC-V (Espressif), Tensilica Xtensa, (audio-)DSPs (Texas Instruments, SHARC), various 8-bit and 16-bit MCUs
- Register-level drivers: DMA, USB, SPI, I2C, UART/USART, I2S and TDM, CAN, LIN, RS485, and more
- Single-board computers: Raspberry Pi, BeagleBone, various ARM Cortex A derivatives
- Work under certification: ISO 13485 and IEC 62304 (medical device software)
- Embedded Linux: Yocto, Pantavisor (pantavisor.io/)
- Networking: SSL/TLS encryption, AES etc., low-level TCP and UDP sockets, HTTP(S), WS(S) (WebSockets), OTA secure firmware updates, WebView API (HTML5, CSS, AngularJS)
- Desktop apps: Linux, Windows
- Cross-platform GUIs: Qt/QML
- Communication hardware: Wi-Fi (IEEE-802.11), Ethernet including TSN, Bluetooth & BLE, GSM: LTE Cat 1 to 4 and NB-IoT, ZigBee, NFC, LoRa & LoRaWAN
- Native mobile apps for Android: in Kotlin or Java, including C++ integration
- Version control: Git (GitHub, GitLab, Bitbucket), SVN (reluctantly…)
- All common data protocols: JSON, MQTT, Modbus & ProfiBus, AT, Matter (CSA-IoT), and more, please ask
- Unit and integration testing
- Hardware bench testing
Experience in hardware development:
- Product development from prototype to production ready
- Own lab for prototyping and testing with all common lab equipment
- Circuit design digital, analog, mixed signal, SPICE, PCB layout and board bring-up
- EDA tools: Altium, KiCad, Eagle, OrCAD and Target
- Robotics: stepper, servo, sync and BLDC motors
- All kinds of sensors
- 3D CAD: Rhino, MOI, Plasticity
Additional skills and experience:
- Software architect in various projects and product developments
- Confident in dealing with customers and stakeholders
- Leadership roles in international teams, extensive experience with interns
- Management tools like Polarion, Confluence, Agile/Scrum, Jira
- Multiple startup experiences, strong problem solver
- Author of English documentation and fiction (novel: "The Bomb")
Languages
Education
TU Berlin
Telecommunications · Berlin, Germany
Certifications & licenses
IEC 62304
ISO 13485
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