Open to opportunities

john jairo quispillo

@johnjairoquispillo

Message

Full Stack Engineer building real-time, offline-first enterprise apps with React, Flutter, .NET, and Python.

Ecuador

Message

What I'm looking for

I’m looking for a fully remote role where I can build end-to-end enterprise systems—real-time and offline-first—using clean architecture, strong CI/CD, and AI-assisted development (SDD with opencode/Claude Code) to deliver stable, maintainable features.

I’m a Full Stack Engineer with 2+ years building end-to-end enterprise software, including ERP modules, mobile apps, and cloud infrastructure. I specialize in React and Flutter on the frontend, and .NET (ASP.NET Core, SignalR) and Python (FastAPI, Flask) on the backend, with a strong focus on real-time systems and offline-first architectures.

In my recent work, I led a POS module migration to the web with React 17, Redux Toolkit, MUI, and .NET 6, including real-time stock updates via SignalR and SRI e-invoicing integration (XML and digital signatures). I also designed an offline-first Flutter field workforce app with Clean Architecture, queued sync retries, and evidence capture workflows, while standardizing CI/CD and Docker-based deployments on Ubuntu using Dokploy, Docker Compose, and Nginx/Apache. I bring Spec-Driven Development (SDD) and AI-assisted development workflows (opencode and Claude Code) to keep systems stable, clean, and well-architected.

Experience

Work history, roles, and key accomplishments

POS Module (ADMenterprise ERP)

ADMenterprise ERP

Nov 2025 - May 2026 (6 months)

Led development of a POS module for ADMenterprise ERP, migrating a legacy desktop app to a React-based web experience. Built real-time stock/inventory updates with SignalR and implemented invoicing flow plus .NET backend services including SRI e-invoicing integration.

Redux toolkit MUI Datagrid ASP.NET Core SignalR SQL Server JWT Swagger Barcode Generation

Full Stack Engineer & DevOps

Birobid S.A.

Mar 2024 - May 2026 (2 years 2 months)

Developed and maintained frontend and backend for multiple apps and key ERP modules, including e-invoicing/SRI and accounting logic. Owned CI/CD and infrastructure (Docker, Ubuntu, Nginx/Apache, load balancing) and implemented secure REST APIs with JWT/OAuth/API keys plus SignalR real-time features.

React Flutter Python Accounting Logic Dokploy Docker Docker Compose Ubuntu Nginx Apache Load Balancing REST APIs JWT OAuth SignalR GitHub Organizations Code Review Scrum Agile

Freelance Web Developer

Freelance

Jan 2025 - Dec 2025 (11 months)

Built and maintained performance- and SEO-optimized websites and landing pages for clients. Delivered turnkey projects (hosting, domain setup, deployment, maintenance) and used automation plus CI/CD workflows.

Astro SEO Optimization WordPress Performance Optimization CI CD Hosting Domain Setup Deployment OpenCode Claude Code

Food & Beverage Team Member

Cabana Bay Beach Resort

Feb 2025 - May 2025 (3 months)

Worked in a high-volume food and beverage environment supporting restaurant, bar, and events operations. Managed orders and kitchen coordination while strengthening English customer communication.

Customer Service English Communication Order Management Restaurant Operations Events Coordination