Freelancer profile translated to English.
Back to original languageAbout John
jocapps GmbH. Made in Germany since 2014. ISO 9001 certified.
App development, psychology, innovations – these are the areas where I enjoy working on exciting projects. More information about me & my background: see my website and LinkedIn. I look forward to hearing from you for a non-binding contact.
German
Native or bilingual
English
Fluent
French
Conversational
Remote only
Primarily works remotely
Experience
- jocapps GmbHCEOSOFTWARE PUBLISHINGDecember 2014 - Today (11 years and 7 months)High-quality apps and digital solutions for over 15,000 customers and over 45,000,000 end-users worldwide since 2014 – from governments and public institutions to medium-sized companies and one-person businesses. We combine technological excellence with pragmatic implementation and scalable architectures.
- John CaffierWeb/iOS/Android DeveloperDIGITAL AND ITJanuary 2010 - December 2014 (4 years and 11 months)Freiburg im Breisgau, GermanyApp and mobile app development with Objective-C (later Swift), Java, PHP, and other technologies (later e.g. React Native and Flutter for hybrid mobile apps). Additionally, app design, app marketing, and technical project management – across industries and for diverse target groups.
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Education
- Ph.D. – Behavioral Data Science / PsychologyTilburg University / University of Mannheim(ongoing)
- Master of Science (M.Sc.) & Bachelor of Science (B.Sc.) – PsychologyUniversity of Konstanz2022
Certifications
- 19th International AAAI Conference on Web and Social Media (ICWSM-25)The Association for the Advancement of Artificial Intelligence2025