I am an experienced freelance Web, Desktop and Mobile developer based in Barcelona (Spain), with over 30 years of IT experience. I specialize in building websites and applications using modern languages. I have expertise in -Web: PHP, Javascript, jQuery, HTML, CSS, Ajax, mySQL, Bootstrap .... and -Desktop: Delphi, C++, .... and -Mobile Native App's (Delphi XE 10.2 Tokyo): Android e iOS. But I am preferring, Android/iOS native App's (and its API's: REST, ...) or Software for Complex Calculations (optimizations. etc..) projects, now. RMKS: (Spanish) No cobro hasta 100% satisfacción pero exijo cobrar el milestone (10%) al aceptar el proyecto ya que Freelancer.com me lo cobra a mí en ese mismo momento. (English) I do not charge up to 100% satisfaction but I demand to charge the milestone (10%) when accepting the project since Freelancer.com charges it to me at that moment.