Projects

Complete P2P vehicle rental platform with integrated payment system and comprehensive security features

• Complete P2P vehicle rental system with owner-renter approval workflow
• Integrated payment system with Wompi (Colombian payment gateway)
• Advanced security with identity verification and license checking

Mobile data payment platform enabling direct data top-ups to specific mobile numbers with secure transaction processing and real-time delivery confirmation

• Direct mobile data top-up system for specific phone numbers
• Real-time transaction processing and delivery confirmation
• Multi-carrier integration with automated routing

Modern healthcare platform for a Costa Rica medical clinic, featuring patient management, appointment scheduling, and medical services showcase with intuitive user experience

• Modern and responsive healthcare platform design
• Intuitive patient information and services showcase
• Medical specialty and doctor directory display

Enterprise partnership and collaboration platform enabling business networking, resource sharing, and secure B2B interactions with advanced management tools

• Enterprise partnership management and networking
• Secure B2B collaboration and resource sharing
• Real-time messaging and project coordination

Comprehensive payment processing platform similar to PayPal, enabling secure multi-currency transactions, peer-to-peer payments, and merchant services with advanced fraud detection

• PayPal-like payment processing with multi-currency support
• Secure peer-to-peer and merchant payment transactions
• Real-time transaction tracking and notifications

Comprehensive international logistics management system for efficient shipment, driver, vehicle, package, payment and user administration

• Complete shipment, driver, vehicle and package management system
• Multi-method payment processing (PayPal, Card, Cash, Transfer)
• JWT-based authentication system with secure user management

Intelligent Telegram bot that generates categorized message summaries for community chats, organizing content into links, wallets, finances and general messages

• Automatic message categorization into Links, Wallets, Finance, and General
• 24-hour rolling summaries with intelligent content filtering
• 5-message limit per category to maintain concise summaries

Backend service for stress testing, load testing, and controlled failure injection into HTTP systems. Acts as an intelligent proxy that intercepts traffic and applies configurable chaos rules to discover breaking points and vulnerabilities before production.

• Chaos engineering with configurable latency, timeouts, outages, and intermittent failures
• Advanced stress testing: DDoS flood, Slowloris, HTTP flood, connection exhaustion
• Load testing modes: ramp, spike, stress, soak, and automatic breakpoint detection

Complete real estate management API for property listings, agents, visits, contracts, payments, and user administration with advanced filtering and search capabilities

• Comprehensive property, agent, and visit management system
• Payment processing and contract administration with secure workflows
• JWT-based authentication with role-based access control

Production-grade traffic shadowing and replay system for Node.js applications that duplicates requests to shadow services and compares responses to detect behavioral differences before deployments

• HTTP proxy middleware that forwards requests to primary upstream service
• Asynchronous shadow dispatch with strict timeouts to prevent impact on production
• Response comparison engine analyzing status codes, normalized bodies, and latency