Yordi Castro

Lead and Full Stack development across web, mobile, and desktop projects for B2B/B2C in agile settings. Focused on efficient architecture, continuous improvement, cross-team collaboration, and top-tier user experience within the 4Geeks ecosystem.

• Led the end-to-end development of the official 4Geeks mobile application (Flutter), integrating secure authentication, sales management, and real-time payment link generation through REST API consumption and UX optimization.
• Directed the full creation of MARKET-APP (Electron + React), a self-service solution with secure session handling, internationalization (i18n), and a robust authentication and payment architecture.
• Developed a real-time messaging system (Angular + Firebase) with modern chat features, enabling direct communication, notifications, and intuitive conversation management between candidates and recruiters.
• Redesigned the ERPNext hospital system by adapting its UI to the 4Geeks visual system using modular CSS, achieving consistent branding and better experience across all devices.

Development and delivery of a comprehensive inventory management system for the National Institute for Innovation and Technology Transfer in Agriculture, covering all key software lifecycle phases.

• Collaborated closely with stakeholders to gather requirements and led architectural design, laying the technical foundation for a scalable, secure, and maintainable system.
• Developed and deployed frontend and backend modules using Blazor and C#, implementing multi-level user access management and optimizing SQL Server database performance.
• Implemented automated testing, incident monitoring, technical documentation, and production deployment to ensure quality, user adoption, seamless data migration, and continuous system operation.

Designed and developed a professional website to enhance the digital presence and branding of Lácteos El Torito, showcasing their product catalog and providing a modern, attractive user experience.

• Led client sessions to define brand values, business goals, and functional requirements, ensuring strategic product alignment.
• Designed and implemented a complete visual system—color palette, typography, and UI components—consistent with brand identity and fully responsive across devices.
• Developed and launched the website using Astro and optimized JavaScript, integrating validated forms and email marketing services, achieving a Google Lighthouse performance score above 90.