Hector Rosales OrtizSenior AI & Full Stack Engineer

Enterprise AI applications using Large Language Models, RAG systems, AI assistants, and OpenAI-based workflow integrations.

Delivered production-ready AI-powered business solutions and enterprise knowledge management systems powered by LLMs.

A modern food delivery and super app platform inspired by large-scale on-demand ecosystems, with restaurant discovery, promotional sections, dynamic content modules, and mobile-first UX.

Delivered a production-ready food delivery platform with modern UX standards, reusable frontend architecture, and optimized Lighthouse performance.

Large-scale native iOS and Android consumer platform work across ordering, logistics, mobile performance, monitoring, and analytics in a massive enterprise mobile codebase.

Contributed to native mobile applications serving millions of users while working with a 100+ member engineering organization and a source codebase larger than 10 GB.

Enterprise SaaS products for international clients, including scalable frontend and backend architectures, microservices, and cloud-native applications.

Delivered digital transformation projects, improved engineering efficiency through reusable frameworks, and reduced deployment times with CI/CD automation.

Enterprise software solutions for banking and retail clients, including REST APIs, backend services, responsive interfaces, and legacy modernization.

Delivered multiple enterprise projects, improved system performance, and contributed to modernization of legacy applications.

Large open-source React Native expense management platform where I contributed bug fixes and improvements across UI, functionality, Markdown rendering, and mobile app workflows.

Contributed targeted bug fixes and product improvements to a large GitHub open-source project powering cross-platform expense management, chat, payments, and accounting workflows.

Swiss wealth protection platform with gold and silver vaulting, global payments, native mobile banking features, and a Nuxt.js web platform for wealth management.

Built secure native mobile and Nuxt.js web experiences for wealth protection, vaulting, global payments, multi-currency workflows, and real-time financial data synchronization.

Cryptocurrency collective token on BSC with reflection rewards, BNB redistribution, an ABC referral system, LP acquisition mechanics, and presale/community engagement flows.

Built token mechanics and supporting web flows for a BSC cryptocurrency project, including holder rewards, transfer redistribution, referral incentives, liquidity acquisition, and presale engagement.

A complete shopping experience built around a product catalog, a persistent cart, and a guided checkout. It models the everyday retail flow end to end, from discovery through order confirmation and history, all served by a mock API.

End-to-end e-commerce storefront covering catalog discovery, cart management, guided checkout, order tracking, and wishlist flows across mobile and desktop platforms.

A cross-platform real-estate platform with linked map and list search, rich listing detail, saved searches, and tour booking—backed by a production-ready FastAPI + PostgreSQL API and a Next.js + Material UI admin dashboard for complete property and user management.

End-to-end real-estate product spanning map-driven discovery, tour scheduling, and agent contact on six platforms, with a matching backend API and admin dashboard for listings, agents, tours, inquiries, and analytics.

A patient-facing healthcare app for doctor discovery and appointment booking, walking users from browsing specialists through slot selection to managing upcoming and past visits—with a production-ready NestJS + MongoDB API and Next.js + Material UI admin dashboard for platform management.

End-to-end telehealth platform covering doctor discovery, appointment booking, patient profiles, and consultation flows across six platforms, with a matching backend API and admin dashboard for doctors, appointments, specialties, articles, and analytics.

A cross-platform food-delivery app for browsing restaurants and menus, building orders, checking out, and tracking couriers live on a map—with a production-ready Django REST Framework + PostgreSQL API and Next.js + Material UI admin platform for restaurants, orders, and couriers.

End-to-end food-delivery product spanning restaurant discovery, cart checkout, live courier tracking, and order timelines across six platforms, backed by a custom API and admin dashboard for restaurant, order, and courier management.

A personal-banking app built around accounts, transfers, and spending insight—presenting balances and transaction history, supporting money movement, and visualizing spending through interactive charts backed by a mock REST API.

Cross-platform fintech experience covering account overview, transfers, transaction history, spending insights, card management, and budgets across six platforms.