Orestis Faltakas
R&D, Technical and Sales Support Expert @ Castles Technology
About
Android Payments Engineer with 5 years of experience working on EMV transaction flows, SDK integrations, and Android POS terminal architectures. Specialized in Castles and PAX devices, with hands-on experience in payment certifications (Mastercard, Visa, CUP) and real-world terminal deployments. Built internal tools and modular platforms (Castles/PAX Utility, CasMonitor) to simplify development, testing, and multi-vendor integrations. Background in R&D, developing Android applications using AR, IoT, and spatial audio for FORTH. Passionate about payment devices, embedded Android systems, and scalable solutions for the payments ecosystem.
Poland
Łódź
Computer Software
EMV, Payments, PostgreSQL, Android, Android Development, English, Java, Kotlin, Model-view-viewmodel (MVVM), Retrofit, Room, Firebase, HTML, Figma (Software), Android Studio, Git
Experience
R&D, Technical and Sales Support Expert
Castles Technology
EMEA
Android Software Engineer
Worldline Greece
Greece
Android Developer
Foundation for Research and Technology - Hellas (FORTH)
Greece
Education
University of Crete, Department of Computer Science
Computer Science
Orestis Faltakas's Contact Information
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