Freelancer profile translated to English.

Description

Test Automation & QA

My focus for the last 2+ years. I build complete test suites that automate testing of web apps, desktop applications, and physical hardware:

Selenium, Appium, UIAutomation — GUI tests for web and desktop
Python & FastAPI — Test frameworks and backend services
OpenCV & Tesseract — Image processing and OCR in test scenarios
Allure Reports — automated test reports and documentation
Robot Control — automated control and testing of physical devices (e.g., radios)
Performance Testing — measurement and evaluation of response times

Programming Languages

C# — Focus on industrial control & desktop apps

Python — current focus, test automation
JavaScript — React frontends, SharePoint web parts
PowerShell, SQL, HTML

Frameworks & Technologies

.NET / .NET Core, ASP.NET Core — Backend development and web APIs
WPF — Desktop applications with MVVM architecture (6+ years)
React — Frontend development in current projects
Entity Framework — ORM in almost all projects
MAUI — Cross-platform apps (desktop & Android)
FastAPI — Lightweight Python APIs

Industrial Control & Protocols

Special experience in connecting industrial plants and robots:
OPC UA / OPC DA — Communication with PLCs and plant controls
REST API, WCF — Interface development
Microservices — Distributed architectures with Docker

Databases

MySQL, MS SQL Server
Entity Framework as ORM
Power BI — Data visualization and reporting

DevOps & Tools

Docker — Container-based deployments and microservices
Git, GitLab, Azure DevOps — Version control and project management
CI/CD Pipelines — automated testing and deployment
Jira, Confluence — Agile project management

Methods & Workflow

Scrum, Agile
MVVM, MVC
Unit Testing, Moq

Languages

German
Native or bilingual
English
Fluent

Workplace preferences

Remote only

Primarily works remotely

Kundenprojekt
Automated Testing of Radios
November 2025 - Today (7 months)
Development of an automated test solution for radios. Construction and programming of several robots that physically control and operate radios automatically. This enables reproducible test scenarios that previously had to be performed manually.
Test Automation Python FastAPI API Design React.js
Kundenprojekt
Development of a Framework for Automated Workflows and Tests
February 2025 - October 2025 (8 months)
Development of an editor that allows users to create their own workflows and tests. The workflows automatically control web apps or Windows apps. All artifacts (screenshots, logs, etc.) are automatically uploaded to an S3 storage (MinIO). The infrastructure consists of various microservices running in a Docker container and are automatically rolled out via a CI/CD pipeline.
PostgreSQL Docker Python FastAPI SQLAlchemy
Kundenprojekt
Application Performance Measurement of a Windows APP
November 2024 - January 2025 (2 months)
Development of application performance measurement software for a Windows app. The software enabled fully automatic control of the application using Appium and UIAutomation. When performing specific actions, the time required for the application to respond was measured. The captured performance data was subsequently analyzed to identify optimization potential and bottlenecks in app performance. The system was designed for repeatable and reliable test runs.
Python FastAPI Appium Selenium PostgreSQL