Performance first
I design for real devices and networks. I consider the first load, asset weight and every interaction so the product feels responsive from the first touch.
/ Portfolio — Alejandro ChavarriaI build modern
I build modern
that work.
( full-stack engineering · Costa Rica )
I design and build marketplaces, internal platforms and web tools. I own the whole product journey, from the first screen to deployment.
/ MethodHow I approach
How I approach
every project?
Performance first
Clean & scalable code
I build with reusable components, clear responsibilities and the dependencies the product needs. Fewer parts to maintain, more room to grow.
Modern UI & UX
I start with the flows people need. Then I shape a coherent, responsive interface with intentional motion, from navigation to error states.
SEO & best practices
Semantic HTML, readable content, keyboard navigation and page-specific metadata. Clear foundations that help people and search engines find what they need.
/ Toolkit
What I build with.
- UI design
- UX design
- Interaction design
- Wireframing
- Design systems
- Motion & micro-interactions
- Brand direction
/ About the studio
I design the interface, build the backend and bring the product to production. One person responsible for the whole journey, from start to finish.
· Vue 3 · Nuxt · React · TypeScript · Tailwind · Laravel · NestJS · Django · PostgreSQL · PostGIS · Redis · Stripe · Docker · AWS · Vercel
/ Selected
A few recent projects.
WellFred
Service marketplace for Costa Rica. Customers find providers and book services; providers manage their calendar, catalog and clients.
- Bookings, escrow payments and provider calendars in one product.
- Static analysis and end-to-end tests cover the application flows.
AutoVentaCR
Vehicle marketplace for Costa Rica. Buyers search and compare cars; dealers manage inventory and import listings in bulk.
- Compare up to four vehicles side by side.
- Search handles typos in make and model without a separate search service.
Planora
Event ticketing platform for Costa Rica — discover events, buy tiered tickets, and carry verifiable QR passes. One React Native codebase shipping to iOS, Android, and web.
- One frontend for iOS, Android and web.
- Ticket and QR flows run on a typed mock API while the backend is in development.
/ How I work
Five principles I apply.
- [ 01 / 05 ]
Start with the problem
Not the solution. Understand the user and the business before touching Figma or the editor.
#problem-first - [ 02 / 05 ]
Few pieces, done well
Fewer abstractions, fewer dependencies, fewer surprises. Simple scales further.
#simplicity - [ 03 / 05 ]
Ship early, ship often
Validate flows early and learn from real use. Real-world feedback beats any assumption.
#delivery - [ 04 / 05 ]
Performance is design
A fast page feels right before it reads. Latency is a product decision.
#performance - [ 05 / 05 ]
Document the decision, not the code
Code explains itself. What's hard to recover later is the why.
#documentation
Ready to build something
that actually works?
Clear design, solid engineering, and focused strategy — working together as one system.