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Hi, I am Jônatas

Full-Stack Engineer

Providing Solutions for Developers Managers Designers

I create immersive digital experiences, bridging the gap between robust logic and fluid design. I deliver complete solutions from database to pixel.

Profile

// The Developer

Engineering Digital Experiences

I am Jônatas Nascimento, 19 years old from Extrema - MG, fully focused on global operations and challenges.

I don't just write code; I build resilient applications. I navigate naturally from root infrastructure (operating Linux/Docker environments via SSH) to Research & Development (R&D), creating advanced AI integrations with Function Calling and Chatbots. I work as a Mid-Level Full-Stack Developer, but the complexity of my deliverables and the architectures I lead reflect Senior-level expertise.

My Core Stack

The core of my engineering is PHP with the modern Laravel ecosystem. Although I master React on the front-end for interactive interfaces, I have a strong technical preference for using Blade or Livewire. An architectural decision to ensure absolute cohesion, extreme delivery speed, and optimized performance.

// Technical

Technical Arsenal

Prioritized toolkit for fullstack. Items are dynamically reordered based on the active dimension.

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framework

Laravel

Expertise in high-performance Laravel engineering using Octane, FrankenPHP, and complex Multi-Tenancy SaaS patterns.
ai

OpenAI

Expertise in building Contextual AI solutions using RAG (Retrieval-Augmented Generation), Function Calling, and Granular JSON Mode.
language

PHP

Explore how PHP is integrated into my knowledge base as a key language.
framework

React.js

A JavaScript library for building user interfaces
tool

WordPress

Explore how WordPress is integrated into my knowledge base as a key tool.
language

Node.js

Cross-platform JavaScript runtime environment
data

PostgreSQL

Open source relational database management system
tool

Docker

Containerization and orchestration
data

Redis

In-memory data structure store
language

Python

High-level, general-purpose programming language

// Design & Dev

Featured Projects

A selection of my most significant and complex work.

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Public Docs AI
react

Public Docs AI

Autonomous AI engine enforcing strict JSON Schemas to generate highly complex, hallcuniation-free structured government contracts dynamically.

Read Case Study
Plataforma Lumen: GovTech SaaS
laravel openai redis

Plataforma Lumen: GovTech SaaS

High-performance Enterprise B2G SaaS powered by Laravel Octane, handling complex public procurement workflows with in-memory state and zero latency.

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The Rescue Mission: Legacy Refactoring
angular rxjs firebase

The Rescue Mission: Legacy Refactoring

Deep refactoring of a legacy government system, eliminating critical Race Conditions and stabilizing an obsolete state-machine architecture with RxJS.

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Public Document Automation SaaS
laravel react openai

Public Document Automation SaaS

Automated pipeline that reduced public document generation from months to minutes using asynchronous background queues and heavy processing workflows.

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AI Engineering: RAG Legal Chatbot
laravel react openai

AI Engineering: RAG Legal Chatbot

Advanced virtual assistant driven by AI and native RAG, capable of querying complex legal contexts and analyzing proprietary files via real-time Vector Search.

Read Case Study
Espresso D' Amore
laravel inertia js expo

Espresso D' Amore

End-to-end digital storefront platform focused on responsive UX, seamless menu integration, and robust operational tooling for local business.

Read Case Study Source Code

// Expertise

My Services

Specialized consulting and architecture design for complex systems.

All Services

AI Engineering

Contextual AI assistants using RAG, Function Calling, and high-precision document indexing.

Cloud & Solutions Architecture

Help businesses design and implement scalable, reliable, and cost-effective cloud solutions.

DevOps Strategy

Agile CI/CD, server provisioning, and asynchronous workers for global scale delivery.

Landing Page Engineering

More than just code. I engineer high-conversion landing pages that capture attention, engage users, and generate leads through precise UX/UI and psychological copywriting.

Journey

The Journey

Great architectures aren't built overnight; they are forged under pressure. This is my background's evolution:

  • The Forging (McDonald's)

    Where I learned relentless execution under pressure, strict SLAs, and pure resilience. The unofficial SRE training.

  • The Base (SENAC)

    Technical course focusing on web systems fundamentals and full-stack architecture.

  • End-to-End Architect (Freelancer)

    Architect and Engineer responsible for platforms like Cafeteria Damore and JYNSGE News, orchestrating infrastructure and complex integrations.

  • Tech Lead & Architect (LUMEN Consultoria)

    Built the Lumen Platform (B2G SaaS) from scratch. Implemented Laravel Octane, autonomous AI R&D, and resolved complex legacy Race Conditions.

  • The Anchor (UNIVESP)

    Bachelor's Degree in Computer Engineering, diving into deep layers and low-level architectures.

// Connection of Knowledge

Interactive Ecosystem

This graph is clickable and navigable. Explore the nodes to discover connections.

Explore Knowledge
  • Projects
  • Blog
  • Services
  • Topics
  • Tags

// Contact Me

Let's Build the Future.

Let's discuss how we can work together to bring your ideas to life.

Email
jonatasndossantos@gmail.com
LinkedIn
/in/jonatasndossantos
GitHub
jonatasndossantos
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