Juan Jose Tellez

Freelance (Full Stack Developer)

Professional profile

Industrial Engineer and Full Stack Developer with 2 years of experience in project management and web development . Specialized in backend/frontend , database management , and delivering solutions for public institutions . Professional level of English

Work experience

Full Stack Developer

freelance (own projects) | January 2023 - Present (3 años 10 meses)

Used skills

Created projects like Grinding Coffee (e-commerce), Mercado Liebre (marketplace clone), Expresify (full stack app), and JappWorkout (ReactJS).

Major achievement

Developed e-commerce and web apps using JavaScript, Express, Node.js, MySQL, ReactJS, and JSON.

Web Developer And Database Manager With Mysql

quindio department government | January 2024 - June 2025 (1 año 5 meses)

Used skills

Managed data for Medical Billing, developed APIs and interfaces per Resolution 2335/2023, reconciled SISPRO and billing databases, maintained Governor’s Office website.

Major achievement

Led data cross-referencing and management for Medical Billing, developed backend APIs and frontend interfaces, ensured database accuracy using MySQL, improved official website functionalities.

Web Developer

mayor's office | June 2023 - December 2023 (6 meses)

Used skills

Improved mayor’s office website functionality and security, implemented data validation, designed efficient interfaces, increased user process efficiency.

Major achievement

Enhanced website security with robust data validation, improved user interface and experience, streamlined user processes for efficiency.

Education experience

Industrial Engineer
Alexander von humboldt university | Profesional

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