Freelancer profile translated to English.
Back to original languageAbout Karsten
I develop digital applications that deliver measurable impact, from idea to implementation.
I have been working in digital product development for over 16 years. I have been self-employed since 2026 and am happy to help you develop digital solutions that solve real problems and create measurable added value. I combine human-centered design with AI-powered web development.
With the AI boost from Claude Code, I can create what would have required an entire team a few years ago. Nevertheless, I don't do "vibe coding": I orchestrate the AI step by step, review every line, and supplement the results with my own code. This way, I leverage the speed advantage for simple tasks while still ensuring high quality.
German
Native or bilingual
English
Fluent
Spanish
Basic
Can work on-site
Hamburg (up to 50km)
Experience
- FreelanceUX Designer & Web DeveloperFebruary 2026 - Today (6 months)Hamburg, GermanyI develop web apps with measurable impact. I support my clients as a UX designer and frontend developer, preferably in combination.
- uxHH - User ExperienceOrganizer and Host for UX Roundtable HH and World Usability Day HHCIVIC AND SOCIAL ORGANIZATIONSMarch 2023 - Today (3 years and 5 months)Hamburg, GermanyI organize and moderate the UX Roundtable Hamburg, a meetup for everyone interested in UX.
- iteratecLead UX Designer & Frontend DeveloperDIGITAL AND ITJanuary 2023 - January 2026 (3 years)Hamburg, GermanyWorked as UX Designer and Frontend Developer in various client projects.Lead of the Excellence Group UX.
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Education
- Certified Professional for User Experience - Essentials in UX and HCD Management (CPUX-M) CPUX Foundation Level HSK Chinese Proficency Test LevelCertified Professional for User Experience - Essentials in UX and HCD Management (CPUX-M) CPUX Foundation Level HSK Chinese Proficency Test Level
- Master of Arts (M.A.)Goldsmiths College, U. of London2011Master of Arts (M.A.)