Full Stack Developer in Calgary – React, Node.js & Mobile Apps

I help startups and businesses build fast, scalable, and user-friendly web and mobile applications using modern technologies like React, Node.js, and React Native.

Whether you need a high-performance web app, a robust backend API, or a cross-platform mobile solution, I deliver clean, maintainable code designed for real-world growth.

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Services

What I build for startups and teams

From high-performance web apps to APIs and mobile — shipped with clean, maintainable code.

  • Web Development

    Custom, responsive web applications built with React and modern frontend tools. Optimized for performance, SEO, and user experience.

  • Backend Development

    Scalable APIs and backend systems using Node.js and NestJS. Secure, efficient, and built to handle real-world traffic.

  • Mobile App Development

    Cross-platform mobile apps using React Native, delivering native performance on both iOS and Android.

  • Full Stack Solutions

    End-to-end development — from idea to deployment — including UI, backend, database, and cloud integration.

Technologies

Technologies I work with

A focused stack for building production web apps, APIs, and mobile clients — end to end.

  • Frontend

    • React
    • Next.js
    • TypeScript

  • Backend

    • Node.js
    • NestJS
    • Express

  • Mobile

    • React Native

  • Databases

    • PostgreSQL
    • MongoDB

  • Tools

    • Docker
    • Git
    • REST APIs
    • GraphQL

Why work with me

Why work with me

I don't just build apps — I build solutions that help businesses grow.

  • Clean, scalable, production-ready code
  • Strong focus on performance and user experience
  • Clear communication and fast turnaround
  • Experience building real-world applications

Location

Based in Calgary, working worldwide

I work with clients in Calgary, across Canada, and remotely worldwide. Available for freelance projects, contract work, and long-term collaborations.

Recent work

Projects & case studies

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Insights & articles

I share notes on software development, backend architecture, and modern frameworks like React and NestJS.

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Contact

Let's work together

Have a project in mind or need a developer to bring your idea to life? Let's talk. Email contact@horaciosapato.com or reach me on social media.