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Juan Diego Reyes User

@juandiegoreyesuser

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Backend & DevOps Developer at Self-employed, taking three web platforms to production with payment integration.

Colombia

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As a freelance Backend & DevOps Developer, I’ve taken three web platforms to production for clients in real estate, clinical psychology, and technology. I built REST APIs consumed by an Angular frontend and integrated Wompi payments and Google APIs.

For my capstone project with Pontificia Universidad Javeriana and UGPP, I developed FastAPI services to classify citizen petitions with AI models and deployed them on Google Cloud Platform. I also built Python data applications using PostgreSQL and Pandas.

Experience

Work history, roles, and key accomplishments

Current

Freelance Backend & DevOps Developer

Current

Self-employed

Jan 2026 - Present (9 months)

Designed and built domain-decoupled REST APIs for web platforms, implemented CI/CD pipelines, and integrated payment and Google APIs. Managed team repositories and launched three production websites.

Python fastAPI Flask REST APIs Docker CI CD GitHub Actions Linux SSH Vercel Render Hostinger Wompi Google API Git GitHub Angular

Capstone Project – Citizen Petition Classifier

Pontificia Universidad Javeriana

Feb 2026 - Jun 2026 (4 months)

Developed FastAPI backend services for AI-based classification of citizen petitions, deployed on Google Cloud Platform. Exposed classification via REST APIs and automated validation and storage in SQLite.

Python fastAPI Google Cloud Platform REST APIs SQLite AI Agile

Freelance Programmer – Automation & Data Applications

Self-employed

Aug 2025 - Feb 2026 (6 months)

Built Python desktop applications with layered architecture on PostgreSQL for data consolidation and validation. Automated data processing and distribution with Pandas and SMTP, packaged as executables.

Python PostgreSQL Pandas SMTP PyInstaller Repository Pattern Service Layers