Desarrollo de sistemas y aplicaciones para empresas | Full Stack + IA

Systems

Complete systems to grow your business

I develop custom systems for small and medium businesses: from mobile apps published on app stores to web platforms with robust backends. Every project is designed to solve real business problems with modern technology and artificial intelligence.

With full-stack experience and daily use of AI as a development tool, I deliver complete solutions — from design to implementation, from frontend to database — with agility and professional quality.

Why choose a custom system?

Complete solution: frontend, backend, database and deployment — everything integrated and ready to use.
Mobile and web apps: Flutter apps published on Google Play and PWAs ready for any device.
Integrated Artificial Intelligence: process automation, smart forms and AI assistants.
Built for SMBs: systems sized for your reality, without unnecessary complexity.

See my projects Contact me

Projects and clients

Taleno

Smart HR form system with AI. Full stack: Vite + Python + Firebase + Google Cloud.

Gymster

Flutter app published on Google Play + web version. Supabase backend. Workout and student management for gyms.

Fluirzen

Meditation and mindfulness app + Chrome extension for in-browser meditation. Full stack with integrated backend.

Maas English

Fullstack platform for English learning with AI and personalized content.

Garden

Conceptual web design — restaurant with gardens and nature.

Lawyers

Conceptual web design — landing page for a law firm.

Tech & AI

Complete stack with Artificial Intelligence

I've been a full-stack developer for over 10 years, with my own company (PJ) and nearly 4 years at my current employer. I deliver complete systems with frontend, backend, databases and AI integrations.

I use AI daily as a development tool — from code assistants to integrating models into real products like Taleno (AI for HR) and Maas English (AI-powered learning).

Technologies and skills

Frontend: React, Vue, Nuxt.js, Flutter, TypeScript, Vite
Backend & Cloud: Python, Node.js, Supabase, Firebase, Google Cloud Functions
Databases: PostgreSQL (Supabase), Firestore, SQLite
AI & Automation: AI-assisted development, LLM integration in products, smart forms
Mobile & Extensions: Flutter (Google Play), Chrome Extensions, PWA
Professional delivery as PJ: tax invoices, clear deadlines and fluid communication

About me

Hi! I'm Matias, a full-stack developer specialized in building complete systems for small and medium businesses.

I'm Argentine, I've been living in Curitiba since 2015 and I have over 10 years of experience as a full-stack developer. I speak Spanish, Portuguese and understand English. With the daily use of artificial intelligence as a development tool, my ability to deliver entire systems has grown considerably.

I've built everything from Flutter apps published on Google Play (Gymster) to AI-powered HR systems (Taleno), learning platforms (Maas English) and browser extensions (Fluirzen). I work with React, Vue, Python, Firebase, Supabase, Google Cloud and AI integration in products.

I have a registered company (PJ) and structure for on-demand projects. If your business needs a system, app or web platform, just reach out.

Contact

Get in touch to discuss the system your business needs. I'm ready to help with any project.

You can find me mainly on WhatsApp, on social media or by sending an email to contact@matiasleites.com.br. I'm excited to work with you!

Matias Leites LTDA

48.292.716/0001-36

Curitiba/PR

contact@matiasleites.com.br

Instagram: @leitesmatias LinkedIn: matiasleites WhatsApp: +55 (41) 99842-8491 Behance: matiasleites