Freelancer profile translated to English.
Back to original languageAbout Karl
Hello!
I am Karl – a passionate Full Stack Developer – and I look forward to supporting you and your company with well-thought-out technical solutions.
My range of services extends from the backend, APIs, and middleware to modern frontends. General IT support and individual consulting are also part of my offerings.
My previous projects include, among others:
- Custom websites and apps, including backend and server setup,
- Customization and expansion of CRM and CMS systems (e.g., WordPress),
- Small helper scripts for automation and efficiency improvement,
- As well as troubleshooting and bug fixing for existing software.
Feel free to contact me with any questions or for a non-binding conversation!
Best regards,
Karl
German
Native or bilingual
English
Fluent
Spanish
Conversational
Chinese
Basic
Remote only
Primarily works remotely
Experience
- HAVWIndividual further development of a CRM system for real estate managementMarch 2023 - Today (3 years and 5 months)In a long-term collaboration, I support a real estate management company with the technical support and further development of its CRM system.My tasks include:
- Development of new functions and individual plugins to map specific business processes
- Maintenance and troubleshooting during ongoing operation
- Performing system updates and technical optimization
- Contact person for IT questions and problems in daily business
The focus is on stable, maintainable solutions and fast, direct support during ongoing operation. - InterfonDynamic product selection tool for WordPress & WooCommerceMarch 2024 - May 2025 (1 year and 2 months)For an existing WordPress site, I developed an interactive selection tool that allows users to configure individual product data and purchase it directly.Technical framework:
- Development of a React frontend, integrated via shortcode into the WordPress theme
- Integration into the WooCommerce shopping cart with dynamic price calculation
- Creation as a modular WordPress plugin (activatable/deactivatable, clearly structured code)
- Setup of a configurable backend for maintaining data sources and adjusting parameters
Functions & Highlights:- Dynamic price calculation with multiple conditions
- Data relationships from different sources
- Visual feedback & responses to the user
- Customizable, responsive design
- Maintainable and expandable through clear plugin architecture
- WCKLogistics & Coordination Software for Aid OrganizationMarch 2023 - April 2023 (1 month)For an organization that provides aid supplies in crisis areas, I developed a software solution to significantly improve logistics, internal communication, and processes.Project goals:
- Simplification of complex processes for planning and distributing aid supplies
- Increase in efficiency and reliability in critical situations
- Optimization of interdepartmental collaboration
Implemented functions:- Provision of real-time information on storage and transport situation
- Offline mode with limited functions for use in regions with poor network coverage
- Intuitive user interface, even for less technically savvy users
- Customized views for different user groups and roles (e.g., warehouse, coordination, operations management)
The system was developed with a focus on robustness, ease of use, and quick learnability.
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Education
- Bachelor of ScienceHamburg University of Technology2021Bachelor of Science - BS, General Engineering Science - Energie- und Umwelttechnik
- AbiturMaristengymnasium Fürstenzell2015Abitur