Description

👨‍💻 Senior Full-Stack JavaScript Developer · React · Next.js · Node.js

I'm a full-stack developer with 10+ years of experience, focused on building modern, scalable, and user-centered web applications. I've worked with startups, enterprise clients, and remote-first teams across Europe and Latin America.

My expertise lies in React, Next.js, Svelte, TypeScript, and Node.js, bridging frontend and backend development with clean architecture and performance-first thinking.

🧠 Tech stack: React, Next.js, Svelte, Node.js, TypeScript, GraphQL, Prisma, MongoDB, PostgreSQL, Docker, Kubernetes

☁️ DevOps & cloud: Docker, Vercel, Azure, GitHub Actions

🧩 Domains: fintech, e-commerce, SaaS, real-time dashboards, developer tools

✅ I work 100% remotely, communicate clearly, and deliver reliable, high-quality code.

I'm currently based in Spain and available for freelance projects across Europe.

Industry field of expertise

Languages

Spanish
Native or bilingual
English
Fluent
Portuguese
Fluent

Workplace preferences

Can work on-site

Madrid (up to 50km)

Paramo Technologies
Senior Javascript Engineer | Contractor
June 2023 - July 2025 (2 years and 1 month)
Developed high-performance frontend applications using React.js and TypeScript, and scalable backend services with Node.js and Docker.

Built and maintained a complex BFF dashboard for traders at betonline.ag, featuring advanced real-time data management and microservices architecture.
Collaborated with a fully remote, international team, following Agile/Scrum methodology and engineering best practices.

Deployed services using Docker and Kubernetes, integrating backend APIs built with .NET to ensure stable and reliable communication.
Focused on clean architecture, code quality, system scalability, and performance optimization in a high-velocity environment.

Tech stack / keywords: React.js, TypeScript, Node.js, Docker, Kubernetes, .NET, Microservices, Remote, Agile
Node.js React.js Next.js React Native Docker
Marssan,
Senior Software Engineer | Freelance
April 2022 - May 2023 (1 year and 1 month)
Delaware, USA
Developed scalable, high-performance frontend components using React.js, Next.js, and Svelte, focused on modularity and responsiveness.

Designed and implemented backend APIs with Node.js, integrating both REST and GraphQL services to ensure robust data flow across systems.
Managed complex application state with Redux and React Context, enabling consistent UI behavior and improving maintainability.

Optimized frontend performance through code splitting, lazy loading, and bundle analysis, leading to faster load times and better UX.
Refactored and modernized legacy codebases to reduce technical debt and align with modern development standards.

Tech stack / keywords: React.js, Next.js, Svelte, Node.js, GraphQL, REST APIs, Redux, Remote, Frontend Optimization, Full Stack, Code Refactoring
Node.js Next.js GraphQL React PostgreSQL
Banco de Crédito BCP,
Technical Leader
August 2020 - December 2021 (1 year and 4 months)
Lima, Peru
Led end-to-end development of Yape digital payment app - Peru's leading fintech solution serving millions of users, driving technical strategy for both frontend (Angular) and backend (Java) development teams through agile sprint planning and delivery.

Architected and delivered scalable financial APIs using Spring Boot and Hibernate, ensuring high-performance data models that supported critical banking operations and regulatory compliance in a demanding financial environment.
Automated cloud infrastructure and deployments with Docker containerization and Azure cloud services, reducing deployment time by 80% and ensuring 99.9% uptime for mission-critical financial services.

Collaborated cross-functionally with product, design, and business teams to deliver reliable, secure solutions that processed thousands of daily transactions while maintaining strict financial sector security and compliance standards.
Key Technologies: Angular • Java • Spring Boot • Hibernate • Docker • Azure • RESTful APIs • Agile/Scrum

Impact: Successfully delivered scalable fintech solutions for one of Peru's largest banks, managing complex financial workflows and ensuring seamless user experience for digital payment platform.
Docker Node.js Angular GraphQL React Native