Freelancer profile translated to English.
Back to original languageAbout Antonio
Need to transform a complex idea into a scalable, secure, and market-ready mobile application?
I'm Antonio Lafuente, a developer specializing in high-performance mobile experiences and robust backend architectures. My focus goes beyond just writing code: I design engineering solutions that ensure the longevity and maintainability of your digital products.
My Differentiating Value: Mobile Full-Stack Developer
By mastering both frontend (native Kotlin and Flutter) and enterprise backend (Java/Spring Boot), I eliminate integration friction. I ensure seamless synchronization between your database and your users' hands.
What Sets Me Apart:
- Quality Architecture:I implement Clean Architecture, MVVM, and SOLID principles. Your application will grow without accumulating unmanageable technical debt.
- Critical Sector Specialist:Experience leading HealthTech platforms, managing sensitive data (GDPR), multi-tenant systems, and AI integration for professional workflows.
- Cutting-Edge AI:Expert in empowering apps with intelligence through LLM consumption and process automation.
- Agile Methodology:Scrum Certified. I guarantee transparent communication, timely deliveries, and alignment with your business objectives.
Projects I Manage:
- Development of native Android apps (Jetpack Compose) and cross-platform apps (Flutter).
- Design and deployment of scalable RESTful APIs with Spring Boot 3.
- Creation of high-fidelity MVPs for startups in record time.
Let's talk about your next technical challenge. I'm available for an initial consultation session where we'll analyze how my technology stack can accelerate your growth.
Spanish
Native or bilingual
Catalan
Native or bilingual
German
Fluent
English
Conversational
Can work on-site
Barcelona (up to 50km)
Experience
- PsicaidMobile DeveloperHEALTH AND WELLNESSFebruary 2026 - Today (6 months)Valencia, SpainI led the comprehensive development of the mobile experience for Psicaid, a B2B platform for psychologists, designing the support API in Java/Spring Boot. I implemented a robust architecture using Flutter and Riverpod, ensuring interface reactivity and efficient data invalidation after session creation or AI-generated summary generation. I designed and built an intuitive user experience for interacting with clinical summaries generated by LLMs, integrating 'force refresh' logic to bypass the cache and ensure up-to-date information for the therapist. a modern and clean interface oriented towards non-technical professionals, reducing cognitive load through a clear design that includes native support for Dark Mode and optimized layouts for tablets.• • Secure API Consumption: Integrated Dio for secure communication with microservices using JWT authentication, implementing strict client-side validations to prevent errors in recording dates and sensitive clinical data.
- Pukkas S.L.Junior Software DeveloperMarch 2025 - June 2025 (3 months)Barcelona, Spain• • Developed and implemented over 25 new Frontend and Backend features for corporate websites, ensuring 100% alignment with client specifications.• • API Development: Developed and implemented 5 RESTful API endpoints using PHP, enabling fluid data consumption for mobile applications.• • Agile Efficiency: Collaborated in a high-performance team through 12 full Scrum cycles (sprints), consistently completing 100% of assigned Jira tickets within deadlines.• • Code Quality: Participated in peer code reviews and technical documentation, contributing to the maintainability of 6 different corporate projects.
- Igrowker ISABackend DeveloperHEALTH AND WELLNESSJanuary 2026 - March 2026 (2 months)
- Desarrollo backend para plataforma SaaS B2B del sector HealthTech.
- Arquitectura Backend: Diseñé y desarrollé APIs RESTful escalables y seguras utilizando Java 17 y Spring Boot 3.
- Seguridad y Multitenancy: Implementé un sistema de autenticación basado en JWT con aislamiento estricto de datos (arquitectura multi-tenant) para garantizar la privacidad entre profesionales de la salud.
- Integración con IA (Microservicios): Diseñé la comunicación con un microservicio en Python (FastAPI) para el procesamiento de notas clínicas mediante LLMs, incluyendo la generación dinámica de prompts y filtrado inteligente de respuestas.
- Cumplimiento y Auditoría (RGPD): Desarrollé un sistema integral de trazabilidad y logs con clasificación de criticidad, garantizando el rigor técnico en la gestión de datos médicos sensibles.
- Optimización de Datos: Gestión de PostgreSQL (Supabase) optimizando el connection pool con HikariCP y aplicando el patrón DTO para asegurar payloads ligeros y paginados.
- Despliegue y DevOps: Lideré el despliegue en Render, orquestando la arquitectura distribuida y gestionando la configuración de entornos para asegurar la alta disponibilidad del producto.
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Education
- Master's DegreeUdemy2026Máster
- Higher Technical Degree in Cross-Platform Application Development (DAM)Jesuïtes El Clot2025Grado Superior en Desarrollo de Aplicaciones Multiplataforma (DAM)
Certifications
- Certified Agile Digital Product Practitioner™ (CADPP™)Igrowker2026