Websites and web apps
Sites and applications with Next.js or SvelteKit and TypeScript. Headless CMS so clients edit their own content, internationalisation, and forms that land where they should.
Full-stack developer
I build websites, mobile apps and the infrastructure that holds them up.
I'm Arnau. I sign as nauran. I design and build products end to end: from the API contract to the phone screen, and from the container to the backup.
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What I do
Mobile apps
Native clients with React Native and Expo for iOS and Android, built to work offline and to share the data contract with the server.
Self-hosted infrastructure
Docker, Cloudflare Tunnel, CI/CD on self-hosted runners, backups and monitoring. Services that run on a Raspberry Pi at home and are reachable from anywhere.
Automation and AI agents
Workflows built on language models: extracting data from images, bots, and coding-agent sessions coordinated under clear rules.
02
Projects
What I have going on. Some are for clients, others are personal products I use every day and that double as my testing ground.
Lade Faction
In productionMultilingual website with a CMS for a tattoo artist
Sales landing for her online course, gallery, blog, booking and contact in four languages (EN, RU, HY, JA). The artist manages every piece of content from an embedded Sanity Studio, no code involved.
VisitGastos Nauran · Naufull
Personal usePersonal expense manager with receipt OCR and bank reconciliation
Replaces a years-old spreadsheet. Snap the receipt, a vision model extracts the data and you review it before saving; bank statements are imported and matched against what was logged. Naufull is the native mobile client, sharing an API contract across repos.
Gym Tracker · Pyreon
Personal useReal-time workout logging with stats
Sets, reps, weight and technique notes from your phone, with rest timer, supersets and a plate calculator. Keeps working on flaky gym Wi-Fi thanks to an idempotent write queue. Pyreon is the Expo app consuming the same API.
Guardrail
In progressA personal digital self-control platform
A Raspberry Pi signs blocking policies and native agents on Windows and Linux enforce them locally. The server is never on the browsing path: no VPN, no proxy, no history collected, and blocking keeps working offline.
Mercator
In progressMaritime trade simulator set in the 3rd-century-BC Mediterranean
Cities, goods, markets, ships and routes in a pure Rust simulation core with no graphics engine, consumed by the UI layer. In the spirit of Patrician and Port Royale.
Rasp Downloader
Personal useDownloads and an ebook library, self-hosted
Self-hosted app on the Raspberry Pi to download from hosters and keep a classifiable book library, served with Calibre-Web. Spec-driven and Docker-first from day one.
Agent Platform
In progressControl plane for autonomous coding agents
A deterministic orchestrator, not an LLM, that hands out tasks to agent sessions, demands a green gate before integrating and leaves a trail of everything it does.
Shinzo
Personal useMusic bot for Discord
Playback with audio filters, genre autoplay and sticky messages. Runs on the Raspberry Pi and deploys from the home runner.
03
How I work
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Spec first
Every non-trivial change starts with a short document: what, why and how it is verified. Architecture decisions are written down as ADRs.
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Green gate
Nothing gets integrated without typecheck, lint, tests and build passing on the actual commit. Linear history, one task per branch.
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Secure by default
No secret in a commit or on the command line. One identity per machine, keys in hardware, and an audit trail of what goes in and out.
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Documentation people read
Every repo states where it stands and what is missing, so anyone, human or agent, can pick up where it was left.
04
Contact
Have a project, or want to talk about one of these? Drop me a line.