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rubendariolugo

Ruben Dario

@rubendariolugo

Full Stack Developer for SaaS Web Apps and APIs

Argentina
About me
I am a Full Stack Developer focused on building web applications, SaaS platforms, APIs, and custom software solutions. I work with React, TypeScript, Node.js, NestJS, Python, FastAPI, PostgreSQL, Prisma, and Docker. I can help you build MVPs, dashboards, backend systems, REST APIs, integrations, and business applications. I also fix bugs, troubleshoot existing projects, improve backend systems, and deploy applications. My approach focuses on clean architecture, maintainable code, security, testing, clear communication, and reliable delivery.... Read more

Skills

r
rubendariolugo
Ruben Dario
Offline • 

See my services

Bug Fixes
I will bugs in your react nodejs or typescript application
From$25 / projectMore details

Portfolio

Work experience

Self_Employed

Full Stack Software Developer

Self Employed • Freelance

Mar 2024 - Present • 2 yrs 4 mos

I work as an independent Full Stack Software Developer, designing and building web applications, SaaS platforms, backend systems, APIs, databases, internal tools, and custom software solutions. My work covers the complete software development lifecycle, including requirements analysis, technical architecture, database design, backend and frontend development, API integration, testing, debugging, containerization, deployment, monitoring, maintenance, and continuous improvement of existing systems. I build modern web applications using React and TypeScript for frontend development, Node.js and NestJS for backend services, and Python with FastAPI for APIs, automation, data processing, and specialized backend services. I work with PostgreSQL, Prisma ORM, REST APIs, authentication and authorization systems, third-party integrations, and Docker-based environments. I have practical experience developing SaaS products, administrative dashboards, content management platforms, data processing pipelines, research and monitoring systems, CRM-related solutions, and experimental mobile communication software. I also work on existing software projects by investigating bugs, identifying root causes, improving backend services, resolving database and API issues, reviewing application architecture, configuring Docker environments, and preparing applications for reliable deployment. My development approach emphasizes clean architecture, modular design, maintainable code, security, testing, observability, technical documentation, and reliable software delivery. I continuously design, build, test, and improve real software products and prototypes, gaining hands-on experience solving technical problems across frontend, backend, databases, infrastructure, and application deployment.