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Fernando N
@fernandonava193
Full Stack Engineer for web and mobile apps
Argentina
English, Spanish
About me
Full-stack Software Engineer with 5+ years of experience and a degree in Computer Engineering. I build web and mobile products end to end: Next.js and React frontends, .NET and Node.js APIs, PostgreSQL databases and Flutter apps for Android and iOS. I spent 3+ years as engineer and tech lead at a fintech company and I ship my own products: a multi-tenant SaaS, a real-time location-sharing app and e-commerce sites for small businesses. Clear communication, realistic estimates and clean, maintainable code. I work in English and Spanish.
Skills
Fernando N
Offline •
Average response time: 5 hours
See my services
Full Stack Web Applications
I will build a modern nextjs website or landing page
Full Stack Web Applications
I will build your online store or product catalog with nextjs
Portfolio
Work experience
Freelance Full-Stack Developer
Freelance
Nov 2025 - Present • 11 mos
I run Deseo Contenidos, a freelance web and content studio. I design and build websites, online stores and web apps for small businesses and brands, end to end: discovery, UI design, development and deployment. Stack: Next.js, React, Supabase (PostgreSQL), Tailwind CSS and Vercel, plus payment integrations (Mercado Pago). Projects include e-commerce sites, product catalogs, landing pages and a multi-tenant SaaS.
Software Engineer and Tech Lead
Facturante
Nov 2022 - Mar 2026 • 3 yrs 4 mos
Backend development in .NET 6/8 with Domain-Driven Design and hexagonal architecture at a fintech product company. Led the subscriptions and billing system (Mercado Pago), the notification center and the CI/CD pipelines. Designed REST APIs with JWT authentication and role-based access, worked with RabbitMQ and Docker, and spent 6 months building data pipelines in Databricks. Acted as tech lead: architecture decisions, code reviews and mentoring junior developers.
