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Hi! I'm

Lucas Carmignani

Full-Stack · Web Systems · SEO

Full-Stack Developer

Cartoon-style avatar of Lucas Carmignani

What I do

About me

Full-Stack Developer with three web systems in production: Negócios, a B2B marketplace of service providers; the online catalog of a traditional delicatessen in São Paulo with more than 40 years of history; and Resolvi Desapegar, a pre-owned luxury marketplace with a PHP site and an Ionic/Angular app for Android and iOS, of which I am the current developer. I work with React, Next.js, Node.js/TypeScript and Supabase on my own projects, with PHP, Angular and AWS on Resolvi Desapegar, and with C#, .NET and SQL Server during my internship at the IT Department of CET-SP. I cover everything from requirements and data modeling to deployment and SEO — currently finishing a Computer Science degree and looking for a Junior Developer or Systems Analyst position.

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Projects

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Technologies

0th

Semester of Computer Science

My journey

Professional experience

  1. Jul 2025 — Present

    Software Development Intern · IT Department (DIN)

    CET — São Paulo Traffic Engineering Company

    • Maintenance and development of web and desktop applications in C#, VB.NET, ASP.NET, classic ASP, VB6, HTML and SQL, including support and modernization of legacy systems.
    • Requirements specification and UML documentation, applying object-oriented design to the solutions.
    • Relational data modeling (Entity-Relationship) and SQL Server queries.
    • Support in developing Android applications and in the electronic mapping of the department's information.

My education

Education

  1. 8th semester · expected graduation Dec 2026

    Bachelor's degree in Computer Science

    Centro Universitário das Américas (FAM)

    Computer Science degree focused on full-stack web development, data structures and software engineering.

Languages

  • English

    Advanced

  • Spanish

    Intermediate

My projects

Projects in production

01

B2B Marketplace · SaaS

Negócios

Marketplace that connects customers to companies and independent professionals across Brazil, with AI-powered search, up to 3 free quotes, chat, a community and dashboards per role. Web and Android app.

AI search · RBAC with 23 permissions · SEO by category and city with prerendering

ReactTypeScriptNode.jsExpressSupabaseTanStack QueryCapacitor
View case study
02

E-commerce · Catalog

Laticínios Popoio

Website and online catalog for a delicatessen in Mooca with more than 40 years of history: a cart that places the order through WhatsApp, products sold by weight or by unit, nutrition details and its own admin panel.

Admin panel with Supabase Auth · cache with on-demand revalidation · local SEO (schema.org)

Next.jsReactTypeScriptSupabaseZustandTailwind CSS
View case study
03

Marketplace · E-commerce · Mobile app

Resolvi Desapegar

Marketplace for pre-owned fashion and luxury, with an online store, admin panel, REST API and an app for Android and iOS. Custom search, several payment methods, shipping through the Brazilian postal service and push notifications.

Custom FULLTEXT search · 3 payment gateways · AWS deploy with CodeDeploy

PHPMariaDBIonicAngularCapacitorAWSDocker
View case study
04

Backend · Real time

Sistema de Gestão de Chamados

Backend for managing support tickets, with real-time updates through SignalR, concurrency control and centralized business rules.

ASP.NET CoreC#SignalRSQL Server
View case study

My technologies

Stack & tools

Languages & Frameworks

TypeScript
JavaScript
React
Next.js
Node.js
Express
PHP
Angular
Ionic
Capacitor
Tailwind CSS
Framer Motion
Zustand
TanStack Query
Zod
C#
ASP.NET Core
VB.NET
HTML
CSS

Data & Infra

SQL Server
MariaDB
Supabase
SignalR
REST APIs
Docker
AWS
Vercel
Railway
Vite
Git
GitHub

Analysis & Quality

UML
Modelagem ER
OOP
Clean Code
Vitest
ESLint
Prettier

Let's talk?

Contact

I am looking for a Junior Developer or Systems Analyst position. If you would like to talk about an opening or a project, get in touch.