About
From agency brand to freelance practice
- Name
- Jesús Manuel Cristancho
- Based in
- Medellín, Colombia — remote, serving clients across the US & Canada
- Timezone
- GMT-5 — overlaps with US & Canada business hours
- Working with
- Clients across the US, Canada & Latin America
- GitHub
- github.com/jesuscriss301
I'm Jesús Manuel Cristancho, a systems engineer and full-stack developer working remotely with clients across the US, Canada and Latin America. I've shipped production software for healthcare, mining, hospitality and e-commerce — including integrations with Colombia's Ministry of Health (MIPRES), real-time monitoring platforms built on microservices, and online stores that grew organic traffic by 40%.
My core stack is Java (Spring Boot) and PHP (Symfony/Laravel) on the backend, with React/TypeScript on the frontend. I integrate applied AI using OpenAI, Gemini and Claude APIs, plus local deployments of open-source models like DeepSeek and Qwen for clients who need data privacy. Every project ships with organic SEO built in. Easy Pro Digital started as an agency brand — today it's my independent practice, so you're talking directly to the person writing the code.
Core stack
Track record
Professional experience
Full-Stack Developer
Offimedicas
- Built and maintained logistics and distribution system modules (PHP 7.2 / Symfony), improving operation time by 5% while processing 3,000 daily queries.
- Integrated Colombia's Ministry of Health MIPRES API for prescription reporting and dispensing control, cutting response times by 40%.
- Designed the MariaDB database for inventory, traceability and pharmaceutical supply chain, ensuring compliance with Colombian Ministry of Health regulations.
- Built the day-to-day operations interfaces (JavaScript/HTML/CSS) for warehouse and distribution staff.
Full-Stack & AI Developer
Freelance (independent projects)
- Implemented online stores with Bagisto (Laravel) — catalog, payment gateway and order management — with on-page SEO that grew organic traffic by 40% and ranked 30 keywords on page one.
- Built an AI chatbot (OpenAI API) integrated with WhatsApp Business that cut response time from 10–40 minutes to under 1 minute and automated 85% of customer inquiries.
- Ran local deployments of open-source LLMs (DeepSeek, Qwen) for clients requiring private AI with no cloud dependency.
- Built a Python + Gemini API application for SEO article generation at scale, producing 150 articles/week.
- Automated business workflows with n8n, AI agents and REST APIs; built React/TypeScript frontend components and hybrid mobile apps.
Full-Stack Developer
Rasi Soluciones S.A.S
- Built frontend and backend modules for healthcare applications (Java Spring Boot, JavaScript, Bootstrap), prioritizing usability for medical staff.
- Implemented unit and end-to-end tests with Cypress, raising coverage to 10% and cutting production defects by 45% in mission-critical healthcare environments.
Systems Lead & Full-Stack Developer
Carbones de Exportación de Colombia
- Technically led a 2-developer team building an enterprise web application from scratch.
- Designed a microservices architecture (Java Spring Boot, MySQL, RESTful APIs) for real-time monitoring, ensuring data integrity and scalability.
Education
Education
- Systems Engineering
- Universidad Francisco de Paula Santander · 2018 — 2022
- Systems Technician
- SENA · 2018