01 Executive mobility platform · Since 2025
Vippers
App and back end for an executive chauffeur service with an armored fleet in São Paulo, Rio de Janeiro and Miami.
Full-stack developer · Custom software from Brazil Software that solves the problem, not just the screen.
I’m Alysson Thoaldo, a senior web developer in Curitiba, Brazil. I design and build systems end to end with a back-end focus: booking, integrations, APIs and the libraries I write along the way.
Services
What I can build for you.
Systems and websites designed around your business, built with the same care as the projects below.
Custom software
Web systems, admin panels, APIs and integrations designed from your process, from the first conversation to deployment.
See the serviceOnline booking system
Online booking with no double bookings, Google Calendar sync, WhatsApp reminders and a management panel, branded for your business.
See the serviceBusiness websites and landing pages
Business websites and landing pages with custom design, fast, search-friendly and built to turn visitors into leads.
See the service
Main projects
Live products and libraries other people use.
Each one started with a concrete problem. The case studies show what was decided and why.
02 Online booking and management · 2026
Nails by Ivyy
Website, booking and management panel for a nail studio in Curitiba, Brazil, with Google Calendar, WhatsApp reminders and a new website the owner edits without a developer.
03 Work hours and time balance tracking · 2026
Kairo
Open-source, self-hosted time tracking: log shifts and breaks and keep an eye on overtime, missing hours and your running balance.
04 Open-source PHP library · 2026
QR Code Generator
PHP library for custom QR codes: module shapes, corner markers, a center logo and output to SVG, PNG, JPEG or WebP.
05 Crawler and sitemap generator · 2026
PHP Crawler
A PHP crawler that walks a site concurrently and writes production-ready XML sitemaps, honoring canonical, noindex and nofollow.
Other projects
Explorations that taught me something.
CalliOpen Backend
REST API for an open-source music platform: collaborative playlists, albums, artists, favorites and audio uploads, documented with OpenAPI.
CalliOpen Frontend
A React music player that also ships as a Tauri desktop app, with a typed API client generated from the back end’s OpenAPI spec.
Crystal Color
A 2D Unity game built as a university team project: a memory puzzle with crystal sequences, NPC dialogue, cutscenes and a save system.
Open source
Packages on Packagist.
Code that grew inside my projects and became a package so it never has to be rewritten.
tonsoo/php-qr-code
Styled QR code generation in PHP, with shapes, a logo and SVG or image output.
composer require tonsoo/php-qr-codePackagisttonsoo/php-crawler
Concurrent crawler that writes XML sitemaps with file rotation and canonical support.
composer require tonsoo/php-crawlerPackagisttonsoo/filament-translatable
Translatable fields for Filament, including paths inside JSON columns such as repeater items.
composer require tonsoo/filament-translatablePackagistl1nnah/file-size
Turns bytes into readable sizes with custom separators, and parses them back.
composer require l1nnah/file-sizePackagist
About
Writing code since I was 11.
I started programming at 11 and went through C, C++, C#, Java, Rust, Python and Lua before PHP and Laravel became my everyday tools.
Since 2023 I have been building websites, online stores, admin panels and systems for clients, including time on an international team. My main project today is Vippers, an executive mobility platform: I look after the client app and much of the API behind it. In my spare time I maintain my own products and open-source libraries.
- Now
- Senior web developer at Tuxon
- Current project
- Vippers, executive mobility app and API
- Based in
- Curitiba, Brazil
- Languages
- Portuguese, English C1, German B1 and Spanish A2
- Open source
- 4 packages on Packagist
How I work
Less code, better judgment.
Understand before building
I start with the process of the people who will use it. Screens come after knowing what has to happen.
Simple that lasts
I’d rather ship something another developer understands a year from now than an architecture that impresses today.
Integrations that don’t break
Calendars, payments and messaging fail. I plan retries, limits and logs from day one.
Ship and maintain
Automated deploys, tests where it matters and enough documentation for the project to move on without me.
FAQ
Before starting a project.
What is custom software?
It is a system built around how your business works, instead of bending the business to fit a ready-made tool: booking, admin panels, integrations or SaaS.
Read the full answerWhat kind of projects do you build?
Laravel web systems and SaaS products, APIs and integrations, Filament admin panels, websites and Flutter apps.
Read the full answerDo you work with companies outside Brazil?
Yes. I am based in Curitiba, Brazil, and work remotely with companies anywhere, with online meetings, in English or Portuguese.
Read the full answerDo you maintain existing systems?
Yes. Maintaining and evolving Laravel applications, websites and Flutter apps in production is part of my daily work, including refactoring legacy code.
Read the full answerHow does a project start?
With a conversation about the problem and the people who will use the system. Then I define scope, timeline and the simplest solution that actually works.
Read the full answerContact
Have a project in mind?
Tell me what you need. I reply within two business days.
contato@alysson-thoaldo.com.br