Freelancer profile translated to English.
Back to original languageAbout Maria
Full Stack Developer specialized in React, Python, WordPress, and integrations
I am a freelance developer with over 4 years of experience creating, optimizing, and maintaining web applications for companies in various sectors.
I work with React, Next.js, Node.js, Python (FastAPI and Django), WordPress, WooCommerce, SQL, Docker, and AWS, developing everything from corporate websites and online stores to SaaS platforms, internal applications, and custom management systems.
I have participated in projects involving hotel management, process automation, system integrations, e-commerce, and business applications, helping companies improve their processes and reduce manual tasks.
Custom web development
Complete applications with React, Next.js, Node.js, FastAPI, and Django.
WordPress and WooCommerce
Creation of corporate websites, landing pages, online stores, theme and plugin customization, maintenance, and optimization.
APIs and integrations
Design of REST APIs and integration with ERPs, CRMs, Stripe, Twilio, cloud services, and third-party platforms.
Optimization and maintenance
Performance improvement, code refactoring, incident resolution, and evolution of applications in production.
Technical audits
Security, performance, code quality, database, accessibility, and technical SEO analysis.
Cloud and deployments
AWS, Docker, CI/CD, and application deployment.
I enjoy getting involved in projects beyond development, providing technical expertise to build scalable, maintainable solutions aligned with business objectives.
If you need to develop an application, improve an existing system, optimize a WordPress website, or automate processes, I will be happy to help.
Spanish
Native or bilingual
English
Fluent
French
Conversational
Remote only
Primarily works remotely
Experience
- SolviumSenior Backend DeveloperTECHNovember 2025 - Today (9 months)Madrid, SpainDesign and implementation of the backend security architecture, definition of new endpoints and improvement of existing ones, with a focus on production environments, stability, and best practices.Responsible for implementing advanced rate limiting per user and endpoint, with exceptions for critical flows and validation through E2E tests. Development of a complete log sanitization and encryption infrastructure, protecting sensitive data (credentials, JWT tokens, and personal data) without affecting application functionality.Leadership in the evolution of models and databases to support encrypted credentials and logs, compatibility with legacy systems, and improved error handling. Management of complex merges, production fixes, and improvements to authentication endpoints.Responsible for technical alignment and integration, adapting models, webhooks, and databases, and generating technical documentation, SQL scripts, and Postman collections.
- GanamaFull Stack DeveloperLOGISTICS AND SUPPLY CHAINSeptember 2025 - Today (11 months)Córdoba, SpainDevelopment and maintenance of the platform's backend, designing the API architecture and data models in PostgreSQL. Implementation of secure endpoints, business logic, and query optimization.Responsible for integrating the backend with the frontend, ensuring consistency in API contracts and validating Pull Requests from the frontend team in React + TypeScript, maintaining standards of quality, readability, and best practices.Agile environment work, version control with Git, CI/CD, and direct coordination with the technical team to prioritize deliverables.Main Stack: Python · Django · PostgreSQL · React · TypeScript ·AWS · Git
- InfinityAppsFREELANCE FULL STACK DEVELOPERTECHJanuary 2025 - January 2026 (1 year)Madrid, Spain🚀 Infinity Apps – Freelance Full Stack DeveloperWeb and mobile development with React, React Native, Django, FastAPI, and PostgreSQL.Creation of secure REST APIs, authentication, and deployments on AWS and the App Store.Additional tasks such as community manager and tech content creator.
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Education
- DEGREE IN COMPUTER ENGINEERINGUNEDGRADO EN INGENIERÍA INFORMÁTICA
- VOCATIONAL TRAINING IN WEB APPLICATION DEVELOPMENTUniversae2026