Freelancer profile translated to English.
Back to original languageAbout Manuel
Freelance Software Engineer specializing inPython**, **Django**, **DRF, and FastAPI**, with **+7 years of professional experiencein enterprise projects for Public Administration and private clients. I have worked in technical teams solving complex problems (Public Health Agency of Barcelona, Barcelona City Council, Movistar+, Cosentino) and in parallel, I have created5+ own products in productionas the sole developer: backend, frontend, mobile apps, and infrastructure. I integrate **AI and LLMs as part of my daily workflow**, relying on them from a solid technical foundation to deliver faster and with higher quality — not as a substitute for judgment, but as an experience multiplier.
Spanish
Native or bilingual
English
Fluent
Remote only
Primarily works remotely
Experience
- FreelancerFreelance Software EngineerPHARMACEUTICALS INDUSTRYJanuary 2026 - Today (7 months)Granada, Spain
Summary
Consulting, functional analysis, and Odoo ERP implementation for industrial sector companies: **Grupo Barosa**, **Akumal Sport Nutritions**, and **NATUCAP**.Development of custom Odoo modules (Python + XML) to adapt business flows to the client's real needs.Work Performed
Consulting and functional analysis.Complete audit of the client's existing product, processes, and systems: identification of inefficiencies, functional gaps, and improvement opportunities.Technical documentation and source of truth.Creation of a Confluence wiki verified with the client, documenting all business processes as a solid foundation for the technical implementation phase.Manufacturing and production.Development of custom Odoo modules: manufacturing sheets, bills of materials (BOM), production orders, and customer interactions — covering the complete flow from raw material purchase to final product delivery. - Nazaries IntelligeniaDjango Backend EngineerSOFTWARE PUBLISHINGMarch 2021 - April 2026 (5 years and 1 month)Granada, Spain
Profile and Achievements
Development in enterprise projects (Public Administration and private sector) managing multiple initiatives in parallel. Rapid promotion from Junior to Mid-level in 2 years. Mentorship of +10 developers and technical code review.Technical Stack
REST API design, complex data modeling in PostgreSQL, zero-downtime production migrations, asynchronous operations with Celery, and Docker deployments.Featured Projects
• ASPB (Public Health Agency of BCN) | Backend Lead (~2.5 years)Architect from scratch the backend for the sanitary inspections platform. Management of complex business rules, conditional flows, digital signatures, and critical tasks. Creation of an integral ETL (Python/pandas) to migrate and unify data from obsolete legacy systems.• NFGE (Barcelona City Council) | Backend Dev (~2 years)Official platform for citizen entity registration. I single-handedly took on and resolved the most critical technical piece: uninterrupted integration with +5 Administration APIs (GeoBCN, PDIB, OpenText), orchestrating different contracts and authentications.• AWA (Irrigation Telecontrol) | Backend Dev (1 year)Distributed IoT system in microservices (Python). Code restructuring to maximize efficiency and zero-based design of an interoperability microservice (UNE standard) to connect third-party systems.• Private Ecosystem (Movistar+ & LinkMusic)Agile development of new features, advanced filters, transactional systems, and bug resolution on mass consumption platforms and social networks. - Proyectos PropiosLead Software EngineerTECHFebruary 2023 - Today (3 years and 6 months)Granada, Spain
Integral Engineering
Architecture, development, and deployment of +5 own products from scratch. Solely responsible for the entire cycle: backend, frontend, mobile apps, infrastructure, and go-to-market strategy.Technical Ecosystem
Proficiency in Django, FastAPI, Angular, and React. Cross-platform compilation with Ionic/Capacitor and desktop solutions with Electron. Management of own infrastructure with +15 Docker services, Nginx, SSL, and automated backups.SaaS and High-Impact Products
• cAIman — Hospitality Management SaaSIntegral platform in production with multiple clients. I designed a hybrid multi-tenant architecture (real-time cloud/local synchronization) and integrated the Verifactu system (Tax Agency). Includes an AI assistant with LLM and complex electronic invoicing management.• Taxy — Fleet Management (Launch 2026)Intelligent system for the taxi sector with full integration of Stripe (subscriptions and webhooks). I implemented an AI engine with computer vision for automatic expense ingestion through image analysis of receipts.• Feats — Social Network for FoodiesProject that consolidated my transition to Full-Stack Engineer, covering everything from the first line of code to App Store deployment and CI/CD management.• Microservices Ecosystem (GlobalAuth)Development of a suite of applications (CashFlow, Yurnal, Sento) connected via a proprietary JWT-based centralized authentication service (SSO), designed for independent scaling.
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Education
- Advanced Technician Degree in Multiplatform Application DevelopmentAdvanced Technician Degree in Multiplatform Application Development