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Hi there! I’m a Software Developer with strong full‑stack experience in JavaScript, Python, Angular, and REST API development. I design scalable web apps and automation systems, including hardware‑integrated solutions, with a focus on robust backend architecture and real‑time user interfaces. I thrive in international teams, bring solid project management and leadership skills, and am fluent in English and Spanish. I enjoy tackling cross‑discipline challenges and continuously learning new technologies to deliver value.…Hi there! I’m a Software Developer with strong full‑stack experience in JavaScript, Python, Angular, and REST API development. I design scalable web apps and automation systems, including hardware‑integrated solutions, with a focus on robust backend architecture and real‑time user interfaces. I thrive in international teams, bring solid project management and leadership skills, and am fluent in English and Spanish. I enjoy tackling cross‑discipline challenges and continuously learning new technologies to deliver value.

EFRÁIN CASARELLO VELÁZQUEZ

Full Stack Developer, Web Developer, Back-End Developer, +2

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Hi there! I’m a Software Developer with strong full‑stack experience in JavaScript, Python, Angular, and REST API development. I design scalable web apps and automation systems, including hardware‑integrated solutions, with a focus on robust backend architecture and real‑time user interfaces. I thrive in international teams, bring solid project management and leadership skills, and am fluent in English and Spanish. I enjoy tackling cross‑discipline challenges and continuously learning new technologies to deliver value.…Hi there! I’m a Software Developer with strong full‑stack experience in JavaScript, Python, Angular, and REST API development. I design scalable web apps and automation systems, including hardware‑integrated solutions, with a focus on robust backend architecture and real‑time user interfaces. I thrive in international teams, bring solid project management and leadership skills, and am fluent in English and Spanish. I enjoy tackling cross‑discipline challenges and continuously learning new technologies to deliver value.

Available to hire

Hi there! I’m a Software Developer with strong full‑stack experience in JavaScript, Python, Angular, and REST API development. I design scalable web apps and automation systems, including hardware‑integrated solutions, with a focus on robust backend architecture and real‑time user interfaces.

I thrive in international teams, bring solid project management and leadership skills, and am fluent in English and Spanish. I enjoy tackling cross‑discipline challenges and continuously learning new technologies to deliver value.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Language

Spanish; Castilian

Fluent

English

Fluent

Work Experience

Administrator / IT Lead at La Obra MSPI

September 1, 2015 - Present

Led IT operations and managed digital infrastructure including websites and Microsoft 365 environments. Optimized organizational workflows and supported digital transformation initiatives. Managed and trained teams while coordinating national and European‑level events.

Software Developer Intern at AndreaLab

April 1, 2024 - December 1, 2024

Developed Angular web application to monitor and manage industrial machine downtime. Improved application security and code quality by identifying and fixing vulnerabilities. Adapted UI/UX design to align with corporate branding requirements. Implemented multilingual support and English localization.

Software Developer at Autolab Ltd.

February 1, 2025 - March 1, 2025

Developed factory testing and monitoring applications using Python. Integrated RS232 communication protocols for hardware and sensor interaction. Designed and implemented GUI applications using PySide6 to enhance usability and monitoring efficiency.

Software Developer at Autolab Ltd.

April 1, 2025 - Present

Designed and developed a full‑stack web application for automated irrigation control integrating JavaScript frontend, Python (Flask) backend, and ESP32 microcontroller. Built RESTful APIs for real‑time device configuration and monitoring. Implemented backend architecture with background task processing, schema migrations, and persistent configuration storage using SQLite. Developed an interactive UI for real‑time hardware relay management with asynchronous API communication. Delivered end‑to‑end validation from user interaction to physical device control.