Freelancer profile translated to English.
Back to original languageAbout Daniel
I am a fullstack developer with over 5 years of experience creating, maintaining, and modernizing business web applications, primarily with PHP, Laravel, MySQL/MariaDB, and JavaScript.
In recent years, I have worked as a technical product manager, handling development, maintenance, support, legacy migrations, third-party integrations, and internal automations.
I have migrated platforms from PHP 5 to PHP 8.3, modernized old intranets to Laravel, developed over 100 integrations with tools like Zoho, Salesforce, Zapier, and custom APIs, and created automations with OpenAI API, Gemini API, Python/FastAPI, and n8n.
I am particularly interested in the intersection of web development, product, and applied AI: automating manual processes, improving internal operations, and building tools that save business teams real time.
Spanish
Native or bilingual
English
Conversational
Remote only
Primarily works remotely
Experience
- FormazionLead Fullstack Developer / AI Automation EngineerEDUCATION AND E-LEARNINGMay 2022 - Today (4 years and 2 months)MadridResponsible for the programming area in an EdTech company with its own product, leading the development, maintenance, and technical evolution of internal platforms and critical business systems.I work as a fullstack profile with a focus on backend, architecture, automation, and system integration, combining traditional web development with AI-first solutions applied to internal processes.Main responsibilities and achievements:
- Development, maintenance, and evolution of business web applications with PHP, Laravel, MariaDB, JavaScript, HTML, and CSS.
- Complete migration of legacy platforms from PHP 5 to PHP 8.3, incorporating performance improvements through caching, query optimization, and stored procedures.
- Migration of an old ASP Classic intranet to Laravel, progressively evolving towards a layered architecture with DTOs, Actions, Services, Repositories, Requests, and Traits.
- Development of a client panel in CodeIgniter for managing courses, master's degrees, content, and descriptions, reducing the operational load of the internal team.
- Implementation of over 100 integrations with centers, clients, and external platforms using Zoho, Salesforce, Zapier, and custom APIs.
- Automation of internal processes with OpenAI API, Gemini API, Python, FastAPI, and n8n, including information extraction from HTML, PDF, or URLs, generation of personalized emails, and automatic content uploading.
- Training and technical support for over 30 interns, defining tasks, reviewing code, and supporting their professional progression.
- Direct technical support to the business, prioritization of internal needs, and coordination of technical solutions with operational impact.
- Evidenze S.LFullstack Web Developer / Client-facing DeveloperHEALTH AND WELLNESSSeptember 2021 - May 2022 (8 months)Alcobendas, SpainFullstack developer in a technology consultancy specializing in healthcare projects, digital events, and web solutions for clients.I participated in both technical development and client communication, helping to translate business needs into functional solutions and technical deliverables.Main responsibilities and achievements:
- Participation in client meetings to understand requirements, define functionalities, and coordinate deliveries.
- Development of an internal application to quickly create event presentation websites, significantly reducing development time.
- Development of a PWA for health tracking used by approximately 1,000 patients, allowing them to record progress, daily exercise, and diet.
- Implementation of over 10 product presentation websites for healthcare clients.
- Development of internal tools used by the development team to accelerate deliveries and standardize projects.
- Work in fullstack environments with Laravel, PHP, JavaScript, Vue, Angular, jQuery, Ajax, and SQL databases.
- Sesortea | CloverhutJunior Fullstack Web DeveloperBANKING AND INSURANCEJanuary 2020 - September 2021 (1 year and 8 months)Madrid, SpainFullstack developer in a startup, participating in the development of new functionalities, maintenance of the internal CRM, and evolution of the web platform.It was my first professional experience as a developer, working in a dynamic environment focused on product, business, and user growth.Main responsibilities and achievements:
- Development from scratch of a friend/referral code system with discounts and commissions, contributing to the increase in purchases.
- Complete development of the website for the opening of the English market, adapting functionalities and content to the new country.
- Implementation of a virtual balance or wallet system for users.
- Development of new functionalities and maintenance of the custom-built internal CRM with Laravel.
- Integration with external tools such as PayPal and Zoho.
- Work with Laravel, PHP, MySQL, JavaScript, jQuery, Alpine.js, Ajax, Docker, and Git.
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Education
- Higher National Diploma in Cross-Platform Application DevelopmentColegio Los Naranjos2019- Sistemas informáticos. - Bases de Datos. - Programación. - Lenguajes de marcas y sistemas de gestión de información. - Entornos de desarrollo. - Acceso a datos. - Desarrollo de interfaces. - Programación multimedia y dispositivos móviles. - Programación de servicios y procesos. - Sistemas de gestión empresarial. - Proyecto de desarrollo de aplicaciones multiplataforma. - Formación y orientación laboral. - Empresa e iniciativa emprendedora. - Formación en centros de trabajo
Certifications
- FastAPI: Create Efficient APIs with PythonUdemy2026
- Astro: The Framework for Content-Oriented WebsitesUdemy2026