HENSELLESPINOZA

CONTACT ME
Hensell working
About Me

Hensell Espinoza

Full Stack Engineer based in Nicaragua — building scalable products for web & mobile using Flutter, React, Node.js & .NET.
🚀 I ship robust apps fast, automate workflows, and love a challenge. Remote-friendly & ready for international collabs.

Projects that actually matter

Takofy POS

Takofy POS

Tako POS is a production-ready point-of-sale app built with Flutter for small businesses. It uses an offline-first architecture powered by PowerSync, ensuring sales keep running even without internet. It's already being used by a real client in Nicaragua, "Tropical Smoties", and it's coming soon to the Play Store and web.

Flutter
Supabase
Android App
Private project (not publicly available)
LazyWrap

Lazy Wrap (Flutter Library)

LazyWrap is a highly optimized Flutter package for rendering large, dynamic, and wrap-style lists efficiently. Supports lazy loading, viewport-aware rendering, and smooth scrolling for apps with thousands of items. Used in multiple client projects.

Flutter
Library
Open Source
nicafinanzas.com

nicafinanzas.com

Created NicaFinanzas, a Flutter web platform designed to improve financial literacy in Nicaragua through an AI-powered chatbot. Developed the frontend using Flutter Web and integrated the OpenAI API to provide real-time guidance on savings, loans, and personal finance. Focused on delivering localized, accessible content tailored to the Nicaraguan context, with emphasis on UX and educational impact.

OpenAI API
Flutter
SEO
quantixai

Quantix Chat bot AI API

Built an open-source API using Cloudflare Workers, Hono, and TypeScript to enable seamless integration between any frontend and OpenAI’s Assistant API. Designed to be lightweight, fast, and developer-friendly, the project serves as a plug-and-play backend for real-time AI-powered chatbots. Emphasized modular architecture and public documentation to support community adoption and extensibility.

OpenAI API
Cloudflare Workers
Node.JS
Hono.JS
demo for a chat bot with ai

Quantix Chatbot – Cloudflare-Powered OpenAI Demo

Developed a lightweight, open-source chatbot demo that connects a Next.js frontend to OpenAI’s Assistant API via a backend powered by Cloudflare Workers and Hono. Built with TypeScript and designed for fast deployment, the project showcases real-time AI interaction and can be easily adapted for custom use cases. Published on GitHub with clear documentation to support developers exploring OpenAI integrations.

OpenAI API
Cloudflare Workers
Next.JS
quantix page

quantix.software

Designed and developed the official website for Quantix, a Nicaraguan software company focused on inventory and sales management solutions. Led the UI/UX design, implemented SEO best practices, and deployed the project using Cloudflare Pages. Integrated Google Search Console for indexing and performance tracking. Also collaborated on building a custom AI assistant using the OpenAI API to enhance customer interaction.

Next.JS
Tailwind
SEO

Let’s build something amazing together.

I’m currently open to freelance opportunities and remote collaborations. Whether you have a project, a challenge, or just want to connect — I’d love to hear from you.

GET IN TOUCH

Or find me on LinkedIn or view my resume.

You can also check out my GitHub profile.