Embedded Systems | Embedded Linux | Test Automation | Python | C/C++ | HiL

5/2023 – 9/2026

Design of a scalable Hardware-in-the-Loop (HiL) test infrastructure for an Embedded Linux platform used across multiple household appliance product lines.

The project focused on enabling continuous integration testing of Linux platform releases before deployment to the product development teams.

Responsibilities

* Designed and developed a modular 19” Hardware-in-the-Loop test rack architecture replacing existing prototype setups with a maintainable and scalable solution.
* Integrated new hardware targets into an existing GitLab CI / Labgrid infrastructure.
* Designed and implemented a cross-platform Python driver for an FT4232-based Debug Board featuring
* Command Line Interface (CLI)
* Desktop GUI
* REST API
for automated testing, developer workflows and laboratory use.
* Supported the hardware development of the Debug Board and designed an extension PCB using KiCad.
* Developed python based validation environments for complete household appliances including washing machines, ovens, dishwashers and coffee machines.
* Automated testing of
* Bootloader
* OTA software updates
* System startup
* Network stability
* Linux platform integration
* Analysed integration issues across Linux platform, application software and hardware in close cooperation with hardware and software development teams.
* Supported continuous delivery of Embedded Linux platform releases to multiple product development teams.

Results

* Designed a scalable test infrastructure supporting approximately 40 embedded Linux target systems with additional expansion planned.
* Test infrastructure operates continuously within GitLab CI and nightly regression testing.
* Improved maintainability, scalability and hardware integration compared to previous setups.
* Enabled reliable validation of new Linux platform releases before deployment to product development teams.

Continuous Integration, Embedded Linux, Test Automation, Git, Python, Representational State Transfer (REST), Engineering Technician

10/2020 – 3/2023

o Embedded software driver for Trinamic controllers to control stepper motors used in coffee machines
o Software low level hardware drivers for components like sensors, different motors and water pumps

Software engineering / -technik, Softwareentwicklung (allg.)

1/2019 – 6/2020

OPCua Gateway für Produktionslinie eines Haushaltsgeräte-Herstellers
Am Ende der Produktionsstraße unseres Kunden werden alle Geräte, bevor sie ausgeliefert werden, in einem End-Of-Line-Tester geprüft.
Um die Kommunikationsprotokolle dieser Geräte (z.B. CAN oder LIN) an die Industrie4.0 Kommunikation OPCua anbinden zu können, wurde hier eine Gateway-Service-Box entwickelt.
Nun kann auf Geräteseite mit z.B. CAN gesprochen werden und auf der anderen Seite mit dem ethernet-basierenden Protokoll OPCua das zu testende Gerät an das Firmen-Netzwerk angebunden werden.
Von diesen Geräten laufen nun ca. 2000 Geräte pro Tag vom Band.

Embedded Entwicklung / hardwarenahe Entwicklung