Freelancer profile translated to English.
Back to original languageAbout Alexander
Hello, my name is Alex Claes. For nine years, I have been working as a freelance Lead/Senior Full-Stack Developer, with a total of almost 20 years of professional experience in web development.
My job is to help teams build sophisticated web applications. I have been able to contribute my expertise in a wide variety of software projects for clients ranging from small agencies to large corporations.
As a teacher, I love sharing my knowledge of web technologies with my students or your team. As a learner, I am always curious and enjoy diving deep into the latest technologies.
I work as a freelancer on a contract basis. Let's collaborate and make your project a success. I can support you with:
- Full-Stack Web Development
- Software Design and Architecture
- Engineering Management
- Technical Consulting
- Technical Training
I live and work in the beautiful city of Hamburg. I am happy to support your team on-site or work remotely.
German
Native or bilingual
English
Fluent
Can work on-site
Hamburg (up to 50km)
Experience
- Dachorganisation deutscher SportvereineSenior Full-Stack DeveloperSPORTSJuly 2025 - September 2025 (2 months)Hamburg, GermanyDevelopment of a CMS-based online platform as a central point of contact for multimedia brand communication with a focus on accessibility, web performance, and data privacy.
- Veranstalter im Bereich Live-EntertainmentSenior Full-Stack DeveloperOctober 2024 - March 2025 (5 months)Development of a multi-tenant capable marketing platform for musicals, theaters, and concerts with a strong focus on highly individualized UI theming based on the headless CMS Contentful.
- Hersteller eines digitalen MedizinproduktsFrontend ArchitectMarch 2023 - April 2024 (1 year and 1 month)Development of a touchscreen application to accompany and analyze during the execution of physiotherapeutic training with live feedback from sensors.TypeScript React Tailwind CSS
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Education
- B.Sc. Business InformaticsNorthern Business School / Hochschule Wismar2016B.Sc.
- Vocational training Media Designer for Digital and Print MediaOGVIT Internet Technologies2011Mediengestalter für Digital- und Printmedien