Horacio Sapato
Full stack developer in Calgary — React, Node.js & mobile apps
I help startups and businesses ship fast, scalable web and mobile experiences—clear scope, thoughtful UX, and codebases that stay approachable as you grow.
Whether you need a high-performance web app, a resilient API layer, or a cross-platform mobile product, you get production-minded engineering and communication that respects your time.
Services
What I build for startups and teams
From high-performance web apps to APIs and mobile—scoped clearly, shipped with maintainable code, and documented so the next engineer is not guessing.
Web development
Custom, responsive web applications with React and modern tooling—tuned for performance, SEO, accessibility, and a polished UX.
- React / Next.js
- Core Web Vitals
- Component systems
Backend development
Scalable APIs and services on Node.js and NestJS—auth, validation, observability, and patterns that stay healthy under load.
- REST & GraphQL
- PostgreSQL / NoSQL
- Secure by design
Mobile app development
Cross-platform apps with React Native—shared logic, native feel on iOS and Android, and store-ready release workflows.
- React Native
- Offline-aware UX
- Store releases
Full stack solutions
End-to-end delivery from discovery to deployment—UI, APIs, data layer, and cloud wiring so your team owns the roadmap.
- Idea → production
- CI-friendly repos
- Handoff docs
Have a product in mind or need help untangling an existing codebase? Share context—timeline, stack, and goals—and we can map a sensible first step.
Start a conversation
Stack
Technologies I work with
A focused toolkit for shipping production web apps, APIs, and mobile clients—typed, tested where it counts, and easy for teams to extend.
End-to-end delivery · pragmatic architecture
Frontend
Product UI & SSR
- React
- Next.js
- TypeScript
Backend
APIs & services
- Node.js
- NestJS
- Express
Mobile
Cross-platform apps
- React Native
Databases
Data modeling & ops
- PostgreSQL
- MongoDB
Tools
Delivery & integration
- Docker
- Git
- REST APIs
- GraphQL
Stack evolves with each product—if your toolchain is not listed, it is still a conversation worth having.
Why me
A clear path from rough idea to something users can rely on
I don't just assemble screens—I partner on outcomes: stable releases, measurable UX, and code your team can extend with confidence.
How we get there
Production mindset
Clean, scalable, production-ready code with reviews, types, and sensible architecture.
Speed that lasts
Strong focus on performance and user experience—not just shipping, but shipping well.
Partnership, not handoffs
Clear communication, predictable updates, and fast turnaround when it matters.
Battle-tested delivery
Experience building real-world applications end-to-end for teams and founders.
Location & availability
Based in Calgary, working worldwide
I work with teams in Calgary, across Canada, and remotely around the globe. Engagements range from focused sprints to long-term product partnerships—whatever fits the roadmap.
- Calgary baseMountain time (MT)
- WorldwideRemote · async-friendly
- OverlapNA · EU-friendly hours
Recent work
Projects & case studies
A snapshot of shipped work—stack, scope, and visuals. Open any card for the full story, gallery, and links.
Insights & articles
Longer-form notes on shipping software—architecture tradeoffs, framework patterns, and lessons from real projects. Written for builders who care about clarity as much as code.
- React & Next.js
- Node / NestJS
- API design
- DX & tooling
Contact
Let's work together
Have a product idea, a rescue mission on legacy code, or a team gap to fill? Send a note—brief context and timeline help a lot. You can also email contact@horaciosapato.com.
Calgary · remote worldwide