Available to hire
I’m Belén Sánchez, a versatile full stack developer with a passion for technology and artificial intelligence. I’m curious, resourceful, and solution-oriented, and I value teamwork, clear communication, and delivering polished software.
In my free time I teach music, stay active, and pursue lifelong learning. I enjoy building meaningful projects that combine creativity with solid engineering.
Skills
Language
Spanish; Castilian
Fluent
English
Intermediate
Catalan; Valencian
Intermediate
Work Experience
Full Stack Developer - Personal Project at Rural Marketplace
October 31, 2024 - August 28, 2025Developed a full stack solution with React, Tailwind CSS, Python, Django, and PostgreSQL using MVC architecture and REST API with JWT authentication. Managed inventory, automatic notifications (Mailtrap), and role-based permissions in the backend. Applied Git flow and worked with version control in GitHub, following best development practices. Implemented tests with 30% coverage in frontend (Jest) and 50% in backend (Pytest).
Full Stack Developer - Freelance at Intelligent Chatbot for Businesses
May 31, 2025 - August 28, 2025Developed an intelligent chatbot focused on businesses using MySQL, Node.js, Express, and OpenAI (GPT-3.5). Implemented conversation management per user, personalized context, and token control, integrating OpenAI API for optimized responses. Integrated a backend with efficient routes and asynchronous processing to improve response speed and scalability.
Full Stack Developer - Freelance at Multilanguage Translator with Generative AI
May 31, 2025 - August 28, 2025Developed a multilanguage translator using Postman, Node.js, Express, and OpenAI (GPT-3.5), focused on multilingual users. Designed an interactive frontend with HTML5, CSS3, and JavaScript, allowing a smooth experience to enter text and select languages. Achieved 92% accuracy in generated responses and reduced response time by 40%.
Music Teacher at La Escuela de Guitarra / Freelance
April 30, 2025 - August 28, 2025Designed personalized music learning experiences for students aged 4 to 60. Promoted active listening, creativity, and disciplined thinking through music. Established clear communication to facilitate technical and expressive processes.
Full Stack Developer at Personal Project | Rural Marketplace
October 31, 2024 - August 28, 2025Developed a full stack solution with React, Tailwind CSS, Python, Django, and PostgreSQL using MVC architecture and REST API with JWT authentication. Managed inventory, automatic notifications (Mailtrap), and role-based permissions in the backend. Applied Git flow and version control on GitHub following best development practices. Implemented tests with 30% coverage in frontend (Jest) and 50% in backend (Pytest).
Full Stack Developer - Freelance at Intelligent Chatbot for Businesses
October 31, 2024 - August 28, 2025Developed an intelligent chatbot focused on businesses using MySQL, Node.js, Express, and OpenAI (GPT-3.5). Implemented conversation management per user, personalized context, and token control, integrating OpenAI API for optimized responses. Integrated a backend with efficient routes and asynchronous processing to improve response speed and scalability.
Full Stack Developer - Freelance at Multilanguage Translator with Generative AI
May 31, 2025 - August 28, 2025Developed a multilanguage translator using Postman, Node.js, Express, and OpenAI (GPT-3.5), focused on multilingual users. Designed an interactive frontend with HTML5, CSS3, and JavaScript, allowing a smooth experience to enter text and select languages. Achieved 92% accuracy in generated responses and reduced response time by 40%.
Music Teacher at La Escuela de Guitarra / Freelance
April 30, 2025 - August 28, 2025Designed personalized music learning experiences for students aged 4 to 60. Promoted active listening, creativity, and disciplined thinking through music. Established clear communication to facilitate technical and expressive processes.
Music Teacher at La Escuela de Guitarra / Freelance
March 1, 2018 - PresentTeach guitar and music theory; develop lesson plans; conduct individualized instruction to students; foster progress and musical literacy.
Full Stack Developer at Rural Marketplace (Personal Project)
October 1, 2024 - September 16, 2025Designed a personalized music learning experiences for students aged 4 to 60. Promoted active listening, creativity, and disciplined thinking through music. Established clear communication to facilitate technical and expressive processes.
Full Stack Developer at Intelligent Chatbot for Businesses
November 1, 2024 - September 16, 2025Developed an intelligent chatbot focusing on businesses using MySQL, Node.js, Express, and OpenAI (GPT-3.5). Implemented conversation management per user, personalized context, and token control, integrating OpenAI API for optimized responses. Integrated backend with efficient routes and synchronous processing to improve response speed and scalability.
Full Stack Developer at Freelance - Multilingual Translator with Generative AI
March 1, 2018 - PresentDesigned an interactive frontend with HTML5, CSS3, and JavaScript, enabling multilingual user interfaces; built a multilingual translator using Generative AI; achieved 92% accuracy in generated responses and reduced response time by 40%.
Full Stack Developer - Personal Project at Rural Marketplace
October 2, 2024 - September 16, 2025Developed a full-stack solution with React for the frontend, Tailwind CSS for styling, Python with Django for the backend, and PostgreSQL for data storage. Implemented an MVC architecture and a RESTful API protected with JWT authentication. Built inventory management features, automated notifications using Mailtrap, and role-based permissions on the backend. Adopted GitFlow and collaborated via GitHub, following best development practices. Implemented automated tests with 30% frontend coverage using Jest and 50% backend coverage with Pytest, enabling earlier detection of regressions.
Music Teacher at La Escuela de Guitarra / Freelance
April 1, 2025 - September 16, 2025Designed personalized music learning experiences for students aged 4 to 6. Promoted active listening, creativity, and disciplined thinking through music. Established clear communication to facilitate technical and expressive processing, and supported progress with ongoing feedback and practice routines.
Education
Bachelor’s Degree in Music at Universidad Nacional de La Plata
April 1, 2014 - March 1, 2020Bachelor’s Degree in Music at Universidad Nacional de La Plata
April 1, 2014 - March 1, 2020Bachelor's Degree in Music at Universidad Nacional de La Plata
April 1, 2014 - March 1, 2020Backend Development Certification at IBM SkillsBuild
March 1, 2025 - May 1, 2025Bachelor's Degree in Music at Universidad Nacional de La Plata
April 1, 2014 - March 1, 2020Full Stack Web Development Bootcamp at Bootcamp F5
April 1, 2024 - November 1, 2024Qualifications
Backend Development Certification: Python, Flask, Django
March 1, 2025 - May 31, 2025Google Cybersecurity Certification
November 1, 2024 - February 28, 2025Backend Development: Python, Flask, Django
March 1, 2025 - May 31, 2025Google Cybersecurity Certification
November 1, 2024 - February 28, 2025Google Cybersecurity Certification
November 1, 2024 - February 1, 2025Google Cybersecurity Certification
November 1, 2024 - February 1, 2025Industry Experience
Education, Software & Internet, Professional Services, Media & Entertainment, Other
Skills
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