Full-Stack Development

Starting at

$

40

/hr

About this service

Summary

I specialize in building custom web apps from idea to deployment, using both AI builders for rapid iteration and traditional code for precision and scalability.
I will develop a modern, responsive UI built with React/Next.js, and a secure, scalable backend powered by Supabase and Node.js.
What you’ll get:
✅ Custom full-stack app (frontend + backend)
✅ Authentication & user roles ✅ Database design with Supabase (Postgres) ✅ APIs & integrations (REST/GraphQL/AI APIs) ✅ Deployment ready for production
Fast, reliable, and scalable—your app will be delivered as a complete, production-ready solution.

What's included

  • Full-Stack App

    Your app will include a modern, responsive UI built with React/Next.js, and a secure, scalable backend powered by Supabase and Node.js. What you’ll get: ✅ Custom full-stack app (frontend + backend) ✅ Authentication & user roles ✅ Database design with Supabase (Postgres) ✅ APIs & integrations (REST/GraphQL/AI APIs) ✅ Deployment ready for production Fast, reliable, and scalable—your app will be delivered as a complete, production-ready solution.

  • Website Prototype

    I will create a clickable website prototype that brings your idea to life before full development. The prototype will showcase your site’s layout, user flow, and design, allowing you to validate your concept and share it with stakeholders or investors. What you’ll get: ✅ Interactive website prototype (desktop + mobile views) ✅ Modern, clean UI design ✅ User flow & navigation preview ✅ Ready-to-use file in Figma or similar tool A fast and cost-effective way to visualize your website before committing to full development.

  • No-Code App

    I will build a complete no-code application using platforms like Bubble.io to deliver fast, functional, and scalable results without traditional coding. Perfect for startups and businesses that need an MVP or internal tool quickly. What you’ll get: ✅ Custom no-code app (web or mobile) ✅ Database setup & workflows ✅ User authentication & roles ✅ API integrations (Stripe, Google, AI, etc.) ✅ Responsive design, ready to launch A rapid, cost-effective way to turn your idea into a fully functional app.

Recommendations

(5.0)

5/5***** We worked with several other low code developers before meeting Sergio. We discovered a true collaborator who took the time to understand our business, clients and vision. He and his team bring years of formal dev training to the low code approach, delivering on time, high quality code and efficient well designed solutions that work, even if we are not clear about the exact requirements up front. He continues to be one of the best devs we have partnered with.

Sara Peral • Mind-1-1

Client • Sep 8, 2025

Sergio has been incredibly helpful and diligent in managing our web app. After a poor experience with a big Bubble company, he stepped in and completely turned things around. He’s reliable, knowledgeable, and consistently delivers high-quality work. From adding new features to improving existing ones, his dedication and problem-solving skills have made a huge difference. We’re very happy with his work and grateful for his expertise.

Sergio is one of the most talented developers I have ever met and had the pleasure of building ideas / tools with. My work with Sergio yielded a six figure grant and we were able to impact many nontechnical people with our pioneering innovations. I’m honored to have known, met, and worked with Sergio. He’s a very hard worker and able to get the job done no matter what!


Skills and tools

Frontend Engineer

Software Engineer

Fullstack Engineer

Node.js

Node.js

React

React

TypeScript

TypeScript

Industries

Computer Software