Freelancer profile translated to English.

Description

Full Stack Developer with over 15 years of experience building SaaS products and AI-based solutions.

I help companies design, develop, and launch digital products, combining software development, automation, and AI integration with LLMs and agents.

I have developed my own SaaS from scratch, which allows me to understand not only the technical side but also the business needs, prioritization, and evolution of a product in real-world environments. I am accustomed to working from initial phases (MVP) to production systems, with a practical and results-oriented approach.

My experience includes developing document processing systems, email ingestion, workflow automation, and scalable architecture design. In recent projects, I have worked on integrating AI into existing processes to increase operational capacity without requiring clients to change their tools.

I am comfortable participating in discovery phases, understanding business problems, and proposing clear architectures and technical solutions, as well as implementing systems from start to finish.

I have worked with startups and companies in various sectors, adapting to different types of projects and needs.

Industry field of expertise

Languages

Spanish
Native or bilingual
English
Conversational

Workplace preferences

Remote only

Primarily works remotely

Ardilla Core S.L.
Founder / Full Stack Developer
CONSULTING AND AUDITS
January 2025 - Today (1 year and 7 months)
Barcelona, Spain
Full development of the SaaS platform for processing tickets and invoices through a smart email:
End-to-end development (frontend and backend)
SMTP server development
AI-based logic development (LLMs) for information extraction and structuring
Agent implementation for data processing and validation
Fine-tuning and model adjustment for specific cases
Backend architecture design for document and data processing
API integration and workflow automation
Implementation of a scalable system with queues and workers
Cloud deployment with Docker and system maintenance
Node.js SMTP AI Automation Software as a Service (SaaS) JavaScript
Friedrich-Ebert-Stiftung
Frontend Developer
PUBLIC SECTOR
January 2025 - November 2025 (10 months)
Barcelona, Spain
Development of interactive platforms for data visualization and digital infrastructure analysis.

I participated in the frontend implementation of various applications focused on analyzing technological dependency in Europe and the impact of large tech companies on institutional environments.

I worked on presenting complex data through interactive components, dynamic structures, and multilingual support, improving the clarity and accessibility of information for the end-user.

The projects were oriented towards research environments, combining structured content with interfaces designed to facilitate data exploration and understanding.
JavaScript Data visualization Web Applications Svelte d3.js
Farmaval
Full Stack Developer
PHARMACEUTICALS INDUSTRY
September 2019 - October 2025 (6 years and 1 month)
Barcelona, Spain
Development of a platform for pharmacies focused on managing health services and patient tracking.

I designed and developed the application comprehensively, including internal back-office, operation, and automation tools, building a system prepared for real-world use in a pharmaceutical environment.

The platform allowed pharmacies to offer digital services for disease management and patient tracking, with a practical approach adapted to their daily operations.
JavaScript PHP MySQL Software as a Service (SaaS) UI Web Design