As a freelance software developer and IT consultant, I have been active in the industry since 1999 and bring over 25 years of programming experience.
My career began with Windows applications and database frontends (Embarcadero Delphi, Microsoft SQL Server) and later expanded to web-based applications using LAMP systems, primarily with PHP and the Symfony framework.
Today, I focus on modern technologies: Python/Django for backend solutions, Vue.js for interactive frontends, and Bootstrap for responsive designs. My workflow is streamlined with tools like npm, Docker, and VS Code.
I am particularly fascinated by the integration of AI functionalities. The combination of many years of experience and modern web technologies enables me to develop both proven and innovative solutions.
Skills
Frontend
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HTML 5
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CSS 3 (Flexbox / Grid)
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JavaScript (ES6+)
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Vue.js 3
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Vite
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Bootstrap 5
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WordPress
Backend
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Python
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Django
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Django REST
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JSON-API
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Node.js
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PHP
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Symfony
DevOps & Tools
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git
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GitHub
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GitHub Actions
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Docker
- Docker compose
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VSCode
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Delphi
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Vercel
Datenbanken
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MariaDB
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MySQL
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SQLite
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Microsoft SQL Server
- phpMyAdmin
Betriebssysteme & Server-Administration
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Ubuntu
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Bash/Zsh
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Webmin/Virtualmin
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Apache
- Nginx
- LAMP-Stack
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Windows Server (Active Directory)
- Windows IT-Systemadministration
Projekterfahrung
ImDoc – Medical Image Database (since 1999)
Client: Hospital Association
Technologies: Delphi, MS SQL Server
Development of a comprehensive medical image database for clinical operations, enabling efficient storage, querying, and management of medical imaging data across multiple healthcare institutions.
HL7 Interface Systems (since 1999)
Client: Hospital Association
Technologies: Delphi, MS SQL Server
Implementation of HL7 interfaces for processing patient admission data from hospital information systems and providing standardized data exchange capabilities for other medical applications.
Operating Room and Outpatient Scheduling System (since 2003)
Client: Hospital Association
Technologies: Delphi, MS SQL Server
Cross-hospital Windows application for comprehensive scheduling of operating room and outpatient appointments, enabling optimized resource allocation and improved patient flow management.
Patient History Archive (since 2004)
Client: Hospital Association
Technologies: Delphi, MS SQL Server
Digital archiving solution for patient data management. The system indexes and archives scanned patient records, ensuring secure long-term storage and efficient access to medical documentation.
PartnerWeb CMS (since 1999)
Client: Major Lubricant Manufacturer
Technologies: Debian Linux, Apache, PHP, MySQL
Comprehensive content management system with dedicated frontend and backend environments for managing automotive workshop partnerships and service provider relationships.
Meeting Management Platform (since 2006)
Client: Major Lubricant Manufacturer
Technologies: Linux, Apache, PHP, Symfony Framework, MySQL
Enterprise platform for scheduling, organizing, and documenting business meetings, with integrated workflow management and reporting features.
Dynamic Price List System (since 2008)
Client: Major Lubricant Manufacturer
Technologies: Linux, Apache, PHP, Symfony Framework, MySQL, IBM iSeries
Advanced pricing management system for generating individualized price lists across various sales channels. Automated data export from IBM iSeries systems with sophisticated import and processing workflows.
IT Administration – Car Dealership (since 2000)
Client: Car dealership with multiple branches
Technologies: Windows Server, Windows Clients, IBM iSeries, Active Directory
Comprehensive IT administration for a multi-branch car dealership network, including centralized server infrastructure management, client support, and integration of IBM iSeries systems within an Active Directory environment.