02/15/2026 updated
100 % available
Senior Frontend Engineer & Architect
Barcelona, Spain
Only remote
Master of Science, Data ScienceAbout me
Senior Frontend Engineer with 9+ years of experience in developing digital products within dynamic startup environments. Expertise in frontend architecture, scalable design systems, and user experience optimization focused on conversion and retention.
User Experience (UX)ArchitectureMicrosoft AzureCloud ComputingConversion Rate OptimizationData ManagementExperimentationPostgreSQLMongoDBNode.jsQuality ManagementSystems DesignTypeScriptWeb Content Accessibility GuidelinesWeb Applications
- Frontend architecture and scalable design systems expertise with focus on conversion optimization and user experience
- React and TypeScript development with modern frontend frameworks and component-based architecture
- Cloud platforms expertise including Kubernetes, Docker, Azure, and GCP with microservices architecture
- Node.js and GraphQL expertise for backend API development and data management
- Database management with MongoDB and PostgreSQL for data storage and retrieval
- Testing frameworks and quality assurance methodologies for reliable software delivery
- Data analytics and experimentation strategies for growth-driven product developmen
- Accessibility compliance with WCAG standards for inclusive web applications
Experience
Professional experience5 - 10 years
Freelancer since2026
Languages
EnglishFluentSpanishNative speaker
Project history
Modernized legacy Rails React application into scalable React/Next.js architecture, led migration from PandaCSS to TailwindCSS, drove experimentation and A/B testing, partnered with cross-functional teams for accessible interfaces, and championed modern React features improving performance by 20%
Developed and maintained server-side applications using .NET Core, C#, and SQL Server, acquired Azure deployment expertise, transitioned to frontend development with Angular and React, and collaborated across teams for responsive user-centric UIs