Freelancer profile translated to English.
Back to original languageAbout Juan Francisco
Full-Stack Developer with over 6 years of experience building digital products for companies and startups. I work 100% remotely and continuously with my clients, some of whom have trusted me for over 5 years.
I currently work in a professional agency mode, integrating AI tools in every phase of development. I use Claude (Anthropic) as my primary assistant for architecture and technical reasoning, and Cursor as an AI-powered development environment. This combination allows me to deliver projects with a speed and quality not possible with a traditional workflow.
My main stack is Node.js, Python, TypeScript, and Vue/Next.js for the frontend. I have solid experience in integrating external APIs (OpenAI, Stripe, REDSYS, GLS, Firebase, Google Cloud) and in clean, scalable architectures.
I have worked for companies like BBVA, Orange, and Everis, which has given me the necessary vision to develop serious products in terms of scalability, stability, and maintenance.
If you are looking for a developer who combines solid experience with the professional use of the most advanced AI tools on the market, let's talk.
Juan Paulino
Spanish
Native or bilingual
Remote only
Primarily works remotely
Experience
- Travel With GastonFull-Stack DeveloperTRAVEL AND TOURISMJanuary 2025 - Today (1 year and 5 months)Madrid, SpainClient in the luxury travel sector with whom I have collaborated regularly and continuously since 2025. With a strong presence on social media, they wanted to move their community to a proprietary booking platform.I developed a complete luxury hotel booking platform: an online store where users search and book hotels under a renewable annual subscription model, providing exclusive access to preferential rates and high-end accommodation experiences.I set up a completely self-manageable solution: a proprietary CMS to manage hotels, content, and bookings without technical dependency, with a decoupled frontend and backend on modern technologies. The system integrates the hotel provider's API and manages the complete booking and subscription flow.Active relationship with development and recurring support.
- techsociety
On Malt
Full-Stack DeveloperMEDICALJune 2022 - June 2022Madrid, SpainTechsociety needed a voice recognition solution that worked offline: a critical requirement for environments where connectivity is not guaranteed.I developed a custom Voice Commander capable of functioning 100% offline, integrating the Vosk voice recognition library with a Node.js and Python backend. The system listens to voice commands in real-time, processes them locally without relying on external services, and executes the corresponding actions.The main technical challenge was to achieve recognition accuracy without perceptible latency, something that cloud models solve easily but which requires model and audio pipeline optimization offline. My previous knowledge in Chatbot development and NLP allowed me to build a tailor-made solution that met all the client's requirements. - Quantion, S.L.Tech Lead - Alexa ChatbotPUBLIC SECTORApril 2022 - June 2022 (1 month)Madrid, EspañaTogether with the Quantion team, we built an Alexa Chatbot.This Chatbot needed to calculate certain data before it could be delivered through Alexa.Therefore, using CronJobs and MongoDB aggregations, we prepared the data that would later be served as calculated responses to end-users.In this project, I participated in the role of Tech Lead, where my mission was to ensure that the technical team met the deliveries and quality standards to develop a project properly.
Reviews
Sara
techsociety
Reviewed on 7/7/2022
It has been a pleasure working with Juan. I want to highlight the professionalism with which he has undertaken the development and his commitment to the project from the beginning. The organization has also been impeccable, presenting development phases that demonstrate his extensive knowledge in software development.
On a technical level, the proposal far exceeds the initial requirements. Furthermore, the code presented is of high quality, including documentation that allows for understanding all the development carried out.
Laura
Quantion, S.L.
Reviewed on 6/2/2022
It has been a pleasure working with Juan. Beyond the expected knowledge, I wanted to highlight his commitment to the project's goals and deadlines and his ability to adapt to project setbacks. A great colleague, he has integrated perfectly into our team and has provided technical support to the more junior team members whenever necessary.
Recommendations
GP
FU
+1
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Education
- Higher Degree in Cross-Platform Application DevelopmentIES Francisco de Goya2017Formación reglada que me permitió aprender a progranar y desarrollarme como profesional en el sector.