Lui Loureiro
Lui Loureiro

Full-Stack Engineer (Back-End Leaning)

Actively looking · Member since 25 Sep 2026
Location
Belém, Brazil
Desired salary
from 500 USD/monthly
Work preference
Remote Only
Experience level
Mid

About

Professional summary

I am a Full-Stack Engineer with a back-end focus and more than four years of experience building Python applications, REST APIs, automation flows, and data-driven systems. My core stack includes Python, FastAPI, Flask, PostgreSQL, Docker, and modern web technologies.

I build end-to-end products, from data modeling and backend services to business rules, third-party integrations, and web interfaces. I am comfortable gathering requirements directly with operational stakeholders and turning spreadsheet-based or manual processes into reliable digital workflows.

As an independent engineer, I have delivered automation, data pipeline, computer vision, OCR, and AI-powered solutions. One of my production computer vision systems for a go-kart operation contributed a client-reported 30% margin increase, while an operations platform delivered a client-reported 80% improvement in efficiency.

I also have professional experience developing and maintaining FastAPI and Flask APIs, browser automation, data extraction workflows, and database integrations. I have earned Top Tier status on Workana, placing me among the platform's top 1% of freelancers.

My academic work complements my engineering background. I am pursuing an M.Sc. in Computer Science focused on Computational Intelligence and Data Science, researching agentic AI, digital twins, IoT, edge machine learning, and synthetic time series.

I am motivated by practical technical challenges where software, automation, and applied AI can create measurable business value. I bring an ownership-oriented mindset, strong backend foundations, and the ability to deliver solutions from concept through production.

Skills

30 capabilities

Tech stack & tools

Working toolkit

Experience

Career history

Software Engineering Consultant — Internal Operations Platform CRS Resíduos e Saúde

I built an internal operations platform from scratch, including its data model, backend services, business rules, integrations, and web interfaces.

I gathered requirements directly with operational stakeholders and delivered a solution that resulted in a client-reported 80% improvement in operational efficiency.

Independent Software Engineer — Python, Automation & Applied AI Self-employed

I deliver Python backends, REST APIs, automation workflows, data pipelines, and AI-powered applications for clients as an independent software engineer.

I developed a YOLO computer vision and OCR system for a go-kart track operation that contributed a client-reported 30% margin increase. I achieved Top Tier status on Workana, placing me among the top 1% of freelancers on the platform.

Junior Python Developer Rime Tecnologia

I built and maintained REST APIs using FastAPI and Flask, implementing endpoints, business rules, and database integrations.

I also developed Python-based browser automation and data extraction workflows using Playwright.

Python Developer Intern Rime Tecnologia

I supported backend and automation development in Python, working on REST APIs, scripts, data extraction, and database integrations.

This role strengthened my practical experience with backend development, automation workflows, and data-oriented systems.

Graduate Researcher — Agentic AI, Digital Twins & IoT Federal University of Pará (UFPA)

I conduct graduate research on architectures that connect edge machine learning, synthetic time series, digital twins, and autonomous agents.

My research focuses on applying agentic AI and IoT concepts to intelligent, real-time systems.

Backend Development Scholar Compass UOL

I participated in a backend development scholarship program focused on strengthening software engineering and backend development foundations.

The program provided structured learning and practical exposure to backend-oriented development concepts.

Education

Learning history

Federal University of Pará (UFPA)

M.Sc., Computer Science (Computational Intelligence and Data Science)

M.Sc. program focused on computational intelligence and data science, including research in agentic AI, digital twins, IoT, and machine learning.

Anhanguera

Postgraduate (lato sensu), Artificial Intelligence and Machine Learning

Postgraduate specialization in artificial intelligence and machine learning.

UNAMA

Technologist, Systems Analysis and Development

Technology degree focused on systems analysis and software development.

UNINTER

B.Sc., Physics

Bachelor's degree program in Physics.

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