From idea to production, cleanly.

Full-stack with Next.js, TypeScript and Supabase. Architecture, product and interface, with a focus on clarity, performance and code that stays maintainable.

Restrained systems. Considered decisions.

Based in Spain, working remotely. Available for new projects.

Next.jsTypeScriptSupabaseSanityTypesenseInngestshadcn/ui

Black-and-white portrait of Roberto Ríos, full-stack developer specialised in Next.js, Supabase and AI-assisted workflows.

Quietly steady.

Personal logomark — Roberto Ríos, full-stack developer.

Quietly steady.

About

How I work: judgement, structure and continuous improvement. Full-stack developer in Spain, working remotely for companies that build digital products.

I'm a full-stack developer with a way of working built on judgment, structure, and continuous improvement. I'm drawn to building systems that are understandable on the inside and pleasant on the outside: clean architectures, coherent data models, and interfaces that stay out of the user's way.

I see development as a craft: listening, ordering, deciding, shipping, iterating. Without dramatizing the process. Without adding unnecessary complexity.

Designing is making good decisions.
Building is reducing friction.
Iterating is improving with discipline.

Apps & libraries

My own projects, from design to code — each with its own identity, in real use.

macOS app · Open source

quill

Leave every meeting with the minutes done — and rewrite any text in the voice its reader expects.

Join a meeting — in Teams, Zoom, Meet or whatever app you use — and Quill transcribes it on your Mac, puts a name to every voice and translates it live if it's in another language. When you hang up: decisions, tasks with owner and date, risks and disagreements, weighted by each person's role. No bot in the call and no audio kept. And select any text and press ⌃⌥R to rewrite it for work, formal, friends or spelling only.

macOS 26
Apple Silicon
Free
MIT
Meeting minutes
Live translation
Rewriting
No account

Discover Quill Download

A meeting in Quill once it ends: the people with their roles, the analysis with the options on the table and who argued for each, and the transcript.

Quill's live panel during a meeting in Spanish: each sentence with its English translation underneath, and the voices of Lucía (Tech Lead) and Andrés.

Live, voices by name and translated; when you hang up, the minutes.

macOS app · Open source

ámbar

Your clipboard history, and voice dictation that costs nothing and learns your words.

Everything you copy — text, images, files — comes back with ⌘⇧V, and it finds the text inside your screenshots. Hold the shortcut and talk: it uses the dictation engine macOS already has, so there is no subscription and no per-minute bill, and it keeps a dictionary of your own that learns every name you correct. Nothing leaves your Mac.

macOS 26
Apple Silicon
Free
MIT
Free dictation
Your own dictionary
No cloud

Discover Ámbar Download

Search the clipboard…

Image 900 × 420Screenshots · 1 min ago
https://www.apple.com/macos/Safari · 3 min ago
#FF9F0AFigma · 12 min ago
quarterly-report.pdfFinder · 20 min ago
See you tomorrow at 10:30Messages · 2 h ago

INVOICE 2026

Recognised text

INVOICE 2026

5 entries⌘⇧V

macOS app · Open source

tessera

A tiling window manager for macOS that never leaves holes.

Every window of each desktop tiled, by keyboard or by mouse. It measures what the window server really draws and learns what each app accepts.

v0.2.1
Swift 6
Free
MIT

Discover Tessera Download

Systems

Architecture, data modelling, reliability and security — real trade-offs, not theory.

Architecture

Clear responsibilities, no mixing layers just because.
Low coupling between modules, services, and components.
Manageable changes without rewriting half the system.

Data

Models faithful to the real domain.
Explicit rules where they prevent future bugs.
Simple queries and data that stays easy to maintain.

Reliability

Repeatable processes, especially for jobs and critical tasks.
Controlled errors — visible and easy to diagnose.
Fast recovery when something breaks.

DX & Security

Predictable environments, easy to spin up and reason about.
Clear validation at the points where it matters.
Well-defined permissions, with sessions and access handled carefully.

Work

Web platforms, design systems and Web3 products for clients in very different sectors. Expand each project for context, constraints and decisions.

Uriach You — B2B platform for pharmacies

B2B platform for pharmacies: training, updates, analytics.

Context: A single place to educate, launch, and support pharmacy partners.

Constraints: Clarity for partners, fast content updates, reliable delivery.

Role: End-to-end ownership: build, ship, iterate.

What I did

Next.js + TypeScript + Sanity foundation, deployed on Vercel.
Training areas for pharmacies and healthcare audiences.
Analytics and internal tooling to support adoption.

Next.jsTypeScriptSanityVercel

Visit

Yuma — ISDIN UI kit & design system

Design system and component library focused on consistency and accessibility.

Context: Shared UI base across multiple ISDIN products.

Constraints: Pixel-accurate UI, a11y, performance, smooth DX.

Role: UI components, architecture, and integration support.

What I did

Reusable components built with Styled Components.
Accessibility-first patterns and strict visual fidelity.
Support work for real adoption in production.

ReactStyled ComponentsDesign SystemAccessibility

Visit

Vinci — Web3 music funding with ERC-20 tokens

Web3 funding for artists with ERC-20 tokens and perks.

Context: Direct fan-to-artist funding with on-chain ownership.

Constraints: Low-friction UX, wallet auth, reliable contract reads.

Role: Frontend, Web3 auth, contract integration.

What I did

Wallet-based authentication and user flows.
Ethereum reads to unlock benefits by ownership.
Clean purchase and discovery experience.

ReactTypeScriptEthereumWeb3 Auth

Visit

Selfcare — Self-service portal for telecom customers

B2B self-service portal for lines, subscriptions, and usage insights.

Context: Customers needed control over their lines without going through support.

Constraints: Dense data, predictable UX, maintainable UI at scale.

Role: Frontend delivery, shared libraries, platform stability.

What I did

Core flows for managing lines and subscriptions.
Improved data views with reusable UI patterns.
Contributed to shared libraries to reduce regressions.

ReactTypeScriptB2B PortalUI Libraries

Visit

Stack

Next.js, Supabase, Sanity, Typesense and the rest of the tools I ship production web applications with.

Next.js (App Router)

Server/client boundaries with predictable patterns
ISR and on-demand revalidation when content matters
Performance and accessibility by default

Next.jsApp RouterRSCISR

Vercel

Serverless deployments with previews by default
Isolated environments, clean releases, one-click rollbacks

VercelServerlessPreviewSecurity

shadcn/ui

Composable primitives that live in your repo, not in a dependency
Fast builds, consistent visual language

shadcn/uiRadixTailwindUI System

Sanity CMS

Structured content modeling
Editorial flow + webhook revalidation

SanityWebhooksContent

Vercel AI SDK + OpenRouter

Streaming, tool calling and structured outputs, one API for every model
The right model for each task, swapped without touching the product
Outputs validated before they reach the user

AI SDKOpenRouterStreamingStructured output

Supabase + Postgres

Relational schemas, constraints, ownership rules
Auth/storage patterns that ship fast
RLS and row-level permissions where they matter

PostgresSupabaseRLS

Inngest

Durable workflows: steps that retry and survive a deploy
Queues, crons and fan-out without running infrastructure

InngestWorkflowsCronsRetries

Typesense

Fast, typo-tolerant search with instant results
Simple indexing and predictable relevance tuning

TypesenseSearchIndexingRelevance

Next.js (App Router)
- Server/client boundaries with predictable patterns
- ISR and on-demand revalidation when content matters
- Performance and accessibility by default
Next.jsApp RouterRSCISR
Vercel
- Serverless deployments with previews by default
- Isolated environments, clean releases, one-click rollbacks
VercelServerlessPreviewSecurity
shadcn/ui
- Composable primitives that live in your repo, not in a dependency
- Fast builds, consistent visual language
shadcn/uiRadixTailwindUI System
Sanity CMS
- Structured content modeling
- Editorial flow + webhook revalidation
SanityWebhooksContent
Vercel AI SDK + OpenRouter
- Streaming, tool calling and structured outputs, one API for every model
- The right model for each task, swapped without touching the product
- Outputs validated before they reach the user
AI SDKOpenRouterStreamingStructured output
Supabase + Postgres
- Relational schemas, constraints, ownership rules
- Auth/storage patterns that ship fast
- RLS and row-level permissions where they matter
PostgresSupabaseRLS
Inngest
- Durable workflows: steps that retry and survive a deploy
- Queues, crons and fan-out without running infrastructure
InngestWorkflowsCronsRetries
Typesense
- Fast, typo-tolerant search with instant results
- Simple indexing and predictable relevance tuning
TypesenseSearchIndexingRelevance

Contact

Open to new projects: web applications, design systems and AI integration. Tell me what you need.

roberto@rrios.dev