Renos is an External Senior Software Engineer working with CLOUD-EX on mobile products and their connected backend systems. His career spans more than 25 years of end-to-end software engineering, from Oracle banking platforms and point-of-sale systems to native iOS and Android applications, Flutter products, Laravel APIs, PostgreSQL backoffices, cloud messaging, and app-store delivery.
His main strength is full-system ownership. Renos can work from database schema and server infrastructure through API design and administrative workflows to the final mobile experience delivered through the Apple App Store and Google Play. That breadth is especially valuable for products where mobile interfaces, payments, real-time events, offline behavior, and operational backoffices must behave as one coherent system.
What Renos brings to CLOUD-EX
Cross-platform mobile leadership
Architects and builds production mobile applications with Flutter and Dart, backed by Laravel and PostgreSQL, while drawing on substantial earlier native iOS and Android experience with Swift, Objective-C, Kotlin, and Java.
Backend and data architecture
Designs maintainable APIs, normalized and scalable database structures, access-control models, localized content, operational dashboards, and the administration tools needed to run a mobile product.
Payments and integrations
Implements embedded Stripe flows, global payment-system support, Firebase services, RabbitMQ messaging, QR scanning, Google Maps, social login, OTP registration, push notifications, and external platform integrations.
End-to-end delivery discipline
Works across server setup, implementation, testing, release preparation, Apple and Google store processes, production diagnostics, and long-term support rather than stopping at application code.
Recent architecture and product delivery
SteamIt Cy mobile car-wash platform
Architected and developed a Flutter and Laravel service-booking ecosystem with PostgreSQL, dynamic pricing by vehicle classification and service tier, OTP registration, Apple and Google sign-in, embedded Stripe payments, and a mobile-responsive backoffice with real-time operational notifications.
Melody Mixer Remote
Developed a low-latency Flutter controller for multi-zone audio, volume, and announcement management in commercial hotel environments. The architecture uses RabbitMQ on AWS to connect remote mobile actions with local Windows-based audio-server software.
Kawacom’s delivery ecosystem
Led full-stack delivery of a multi-application franchise platform comprising a customer ordering app, kitchen-management display, driver-delivery app, and table or waiter terminal, supported by a Laravel and PostgreSQL backoffice.
PokerLoad event and tournament booking
Delivered a cross-platform booking application for casino poker events and tournaments, with QR-code venue check-in, Google Maps discovery, Firebase services, and dynamic multi-language content managed by a Laravel backend.
Retail and betting mobile products
Led and contributed to large native iOS and Android initiatives, including Playtech’s Retail Mobile App, OPAP Bring Your Own Device libraries, and mobile betting companion products using Swift, Objective-C, Kotlin, Java, and connected .NET services.
Banking and payment processing
Developed optimized Oracle PL/SQL for the PRIME 3 banking platform, delivered core modules for the DNB Nor project from inception through deployment, and later provided technical analysis and Tier-3 support for global payment-processing systems.
Professional career
- CLOUD-EX Information SystemsExternal Senior Software Engineer, 2025 – presentArchitects and develops cross-platform mobile applications and connected Laravel systems, including SteamIt Cy and Melody Mixer Remote.
- GDEK ConsultantsSenior Software Engineer, 2021 – presentLeads end-to-end Flutter and Laravel mobile delivery, develops React and TypeScript interfaces for AI chatbot solutions, and provides technical analysis and Tier-3 support for payment-processing platforms.
- PlaytechSoftware Engineer / Mobile Apps Developer, 2014 – 2021Designed, built, and maintained iOS and Android betting-exchange applications, led retail-mobile delivery, developed OPAP BYOD native libraries, and implemented supporting .NET and SQL Server services.
- BetologicSoftware Engineer / Web Developer, 2010 – 2014Designed and developed high-volume betting-exchange websites and mobile companion products with .NET C#, TypeScript, Angular, HTML5, and SQL Server.
- Global Payments / TSYSProgrammer Analyst, 2007 – 2010Developed Oracle PL/SQL for PRIME 3 banking systems and delivered modules for the DNB Nor implementation, including on-site setup, development, support, and staff training in Oslo.
- InfoTEX Software SolutionsSoftware Developer, 2002 – 2006Developed and supported restaurant point-of-sale and dispatch systems with Delphi and SQL Server, including on-site conversion and setup work in Bucharest.
- SEK OrganizationData Analyst, 2001 – 2002Maintained and optimized regional Oracle databases, establishing the data-management foundation for his later application and platform work.
Technical capability
Primary full-stack mobile platform
Flutter and Dart, Laravel and PHP, PostgreSQL, RESTful API design, backoffice PWAs, localization, access control, offline synchronization, release management, and connected operational workflows.
Native mobile engineering
Swift, SwiftUI, Objective-C, Kotlin, Java, Xcode, Android Studio, Apple Developer Portal, Google Play Console, platform libraries, store submissions, and production diagnostics.
Backend, data, and cloud
MySQL, PostgreSQL, Oracle, PL/SQL, SQL Server, AWS, RabbitMQ, Firebase, Stripe, .NET C#, CodeIgniter, database modelling, cloud messaging, and scalable API architecture.
Web and delivery tools
React 18, TypeScript, Angular, HTML5, CSS3, JavaScript, jQuery, XML and JSON, GitHub and GitLab, Postman, Visual Studio Code, Photoshop, and Illustrator.
Additional project depth
Earlier work includes restaurant management and dispatch platforms, hotel-employee provident-fund services, betting and financial websites, and independently delivered air-quality and medical-business websites with companion native mobile applications. Across these projects Renos has repeatedly moved between legacy environments and modern stacks, giving him a practical understanding of migration, integration, and the operational realities of long-lived software.
International delivery experience includes banking-system work in Oslo and point-of-sale conversion and setup in Bucharest. These assignments covered development, configuration, troubleshooting, support, and personnel training in live client environments.
Education and professional foundation
- Bachelor’s Degree in Computer Science – Cyprus College, 2000-2004.
- Languages – Greek native speaker and fluent professional English.
- Current engineering focus – Cross-platform mobile products, Laravel APIs and backoffices, PostgreSQL data design, payments, real-time messaging, and production release.
Renos strengthens CLOUD-EX with senior mobile specialization backed by a much broader systems career. He understands not only the app a user touches, but also the database, API, messaging, payment, administration, and support layers required to make that app dependable.