Technical Lead / Senior Front End Developer at Astropay

Owned critical payment modules and a PCI-certified Web SDK, focusing on performance, security, scalability, and cross-squad collaboration. Built the Cards Web Module (React/TypeScript + Redux + Sass) and led design, implementation, and certification of a web SDK for card tokenization and PAN reveal. Implemented security measures (postMessage origin validation, HttpOnly/Secure/SameSite cookies, CORS, Referrer-Policy), improved performance via code-splitting, lazy loading, memoization, and data caching with IndexedDB. Drove Jenkins/AWS pipelines for faster releases and mentored QA across squads.

Semi Senior Programmer Analyst at Accusys Technology (Consultant Banco Hipotecario)

Migrated the Office Banking UI from a legacy Java stack to a modern React + Redux front end, leading from project startup to production. Implemented IndexedDB caching, skeleton screens, and progressive hydration to improve performance and perceived speed. Fixed production issues, supported daily banking operations, and collaborated with Product/Design to validate feasibility. Back-end work included Java services.

Systems Analyst at Tarjeta Data

Maintained a debt recovery Java system; built middleware APIs bridging Java 8/Spring backends with React/Vue front-ends; added authentication, input validation, logging, and error handling to improve reliability. Contributed to a React Native app for payments and card display.

Junior Software Developer — Healthcare Platform at Excelencia Software

Implemented UI enhancements for a hospital information system (.NET + Angular v2); wrote SQL queries/stored procedures for reporting and patient workflows. Assisted in mobile migration to React Native and supported modernization efforts.

Freelance Projects at Independent

Legal Events Scraping Platform: Built a scraping pipeline with FastAPI, React (Vite), Node.js and MongoDB. Exposed REST endpoints to orchestrate scraping tasks, implemented idempotent ingestion and scheduled jobs, and normalized data for reliable search and analytics. Mobile & Web Apps: Real-time app suite with React Native (Expo) and Next.js, SSR/ISR web frontend, WebSockets, authentication, and shared REST API. Challenge Podcast (v2): Podcast discovery/listening app built with Next.js, TypeScript, and Tailwind, featuring dynamic routes, per-episode views, and accessible UI.

Mobile & Web Apps — React Native (Expo), Next.js, WebSockets at Independent

Real-time app suite: React Native mobile app (Expo) with push notifications and local storage; Next.js web frontend with SSR/ISR; WebSocket channels for bidirectional messaging; authentication and cross-platform data sharing.

Challenge Podcast (v2) at Independent

Discovery & listening app for podcasts built with Next.js + TypeScript + Tailwind, featuring dynamic routes and per-episode views. Data layer with caching, SSR/ISR, accessible UI, and testing strategies; deployed on Vercel.

Technical Lead / Senior Front-End Developer at Astropay

Owned critical payment modules and a PCI-certified Web SDK, focusing on performance, security, scalability, and cross-squad collaboration. Implemented Cards Web Module (React + TypeScript) and led the PCI Web SDK tokenization project with zero regressions. Improved security with iframe messaging, cookies, CORS, SSO/OAuth2, and CORP/COOP isolation. Drove architecture decisions, code-splitting, lazy loading, memoization, and data caching with IndexedDB; introduced progressive hydration, skeletons, virtualization, and accessible UI patterns. Supported CI/CD improvements, introduced cross-squad QA practices, and mentored engineers.

Semi Senior Programmer Analyst at Accusys Technology (Consultant Banco Hipotecario)

Supported daily banking operations while migrating Office Banking UI from legacy Java to React. Delivered a React + Redux + React Router v5 front end, with IndexedDB caching, skeleton screens, progressive hydration, virtualization, and improved UX. Participated in CI/CD setup with Jenkins; ensured reliability and frequent releases.

Systems Analyst at Tarjeta Data

Maintained debt recovery platform with Java/Spring; built middleware REST APIs in Node.js/Express bridging back-end services with front-ends; implemented data protection, authentication, and API contracts; contributed to migration and production stability.