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Multiplatform developer

SergiCantallopsPeré

Barcelona, Spain Multiplatform Development student Available

What I do

I automate thingsso I don't have tokeep an eye on them.

It's the part I enjoy most: set something up once and have it keep working without me in front of it. The rest is curiosity — I spend all day looking at what has just come out and talking to AIs to see how far they go.

Why

I got into this through video games. I played a lot, and going from playing to wanting to build what I played was a pretty short step.

What I want to build now is something else — an app, a SaaS, something of my own. But first I want to see how a company works from the inside: how it gets decided what to build, how things get prioritised, what happens when something breaks.

Learning from people who have already been through it seems like the most honest shortcut there is.

The last time I lost track of the time was building the Soniro website. I started at four in the afternoon and stopped at three in the morning.

01Coming soon to the App Store2026

Soniro

My own product · iPhone app

It's my own product and I've handled all of it: the app, the backend, the website and the brand. You tell it what you have to do and an AI pulls out the task, the time and the priority. What sets it apart isn't that it's louder — it's that an important reminder stops looking like an Instagram notification: it sounds different and it doesn't disappear when you clear the tray.

  • React Native with Expo, shipped through EAS
  • Supabase as the backend: Postgres, auth and Edge Functions
  • Subscriptions with RevenueCat and Sign in with Apple
  • A Siri shortcut that works with the app closed, plus a widget and a Live Activity on the lock screen
React NativeExpoTypeScriptSupabaseRevenueCat
soniro.app
soniro.app

02Live2025

Sa Mata Grossa

Holiday rental estate · Búger, Mallorca

The previous site had broken: the slider was rendering as plain text and the sections had lost the body of their content. I rebuilt it from scratch with a custom classic theme, around 6,800 lines of PHP. The most important design constraint wasn't visual: the person who runs the estate doesn't touch code, so everything that might need changing — text, photos, booked dates, rates — is edited from the WordPress admin, without touching a file.

  • Four languages, with the full legal texts in each one
  • Availability calendar and seasonal pricing, editable from the admin
  • A hand-drawn SVG map of Mallorca
  • A reproducible development environment with Docker
WordPressPHPJavaScriptMySQLDocker
samatagrossa.com
samatagrossa.com

03In progress2025

Miquel Moll Photography

Staged fine art photographer · Mallorca

Constructed portraits, period wardrobe, low light and warm colour. The work is vertical, and that shapes the layout more than anything else: the grid is built so a vertical photo can breathe on a wide screen without being cropped. The brief asked for black, minimal and clean, with nothing competing with the photos.

  • A grid designed for vertical format, with no cropping on wide screens
  • Custom classic theme, no page builders
  • Photo import pipeline with WP-CLI
  • An isolated Docker environment that coexists with other local projects
WordPressPHPDockerWP-CLI
miquelmollphotography.com · under construction
miquelmollphotography.com

Under construction

The domain is still serving a certificate that isn't its own, so I'm not showing it live until that's issued.

Craft

What I'm using right now. The list changes every few months, and that's part of the fun.

JavaJavaScriptPHPPythonSQLHTML/CSSDockerGitAPI RESTJSONn8nWordPressLinuxWindows ServerActive DirectoryTCP/IPDNSLAN

Background

  1. 2025 — PresenteHigher Vocational Diploma in Multiplatform Application DevelopmentInstituto Pedralbes
  2. 2023 — 2025Vocational Diploma in Microcomputer Systems and NetworksCIFP Pau Casesnoves
  3. 04/2025 — 06/2025Systems and Network TechnicianCEIP Miquel Duran i Saurina · Inca, Spain
  4. 03/2025 — 04/2025Support and Hardware TechnicianAdvansys Notebook Szerviz kft · Budapest, Hungary

Contact

scantallopsp@gmail.com

Or write to me from here