João Ricardo Lhullier Lugão, Developer in Cotia - State of São Paulo, Brazil
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João Ricardo Lhullier Lugão

Data Analysis Developer

Cotia - State of São Paulo, Brazil

Toptal member since November 4, 2020

Expertise
Full-stackWeb DevelopmentPythonDjangoData AnalysisSQLDockerJavaScriptREST APIMySQLMATLABLinuxPostgreSQL
Bio

João is a software engineer, speaker, and a lifelong learner. With a multidisciplinary background converging business, design, technical, and quality criteria into products, he has experience with Docker, Python, JavaScript, Django, Flask, Fastapi, Linux, Embedded Systems, and other technologies. João is always looking for something new to learn.

Portfolio

Flowcap
Full-stack, PostgreSQL, JavaScript, Vue 2, Docker Compose, Docker, Flask...
Kizen Technologies
Python 3, Django, Django ORM, PostgreSQL, Web Development, Architecture...
LabWare
SQL Server 2012, Oracle, SQL, Visual Basic...

Experience

  • Python - 8 years
  • PostgreSQL - 6 years
  • SQL - 5 years
  • Django - 4 years
  • Docker - 4 years
  • Data Analysis - 4 years
  • JavaScript - 4 years
  • Vue 2 - 4 years

Preferred Environment

Python 3, Linux, Python, Django

The most amazing...

...thing I've developed was a vending machine management system responsible for keeping dozens of vending machines working.

Work Experience

Senior Developer/Owner

2017 - PRESENT
Flowcap
  • Developed an internal social media for a maker school. The project featured project evaluation, privacy controls, multi-tenancy, and more.
  • Built a dashboard to display saving for customers to an energy trading company.
  • Created an online vending machine management system.
  • Developed a rule engine to allow the customer's app to accommodate multiple customizable workflows.
  • Formed and managed a development team to handover a project so the customer could continue developing the project in-house.
Technologies: Full-stack, PostgreSQL, JavaScript, Vue 2, Docker Compose, Docker, Flask, FastAPI, Django, Python 3, Web Development, Software Architecture, Team Leadership, Project Management, APIs, MySQL, Vue, Architecture, Software Design, REST APIs

Senior Back-end Developer

2021 - 2021
Kizen Technologies
  • Profiled the application to find bottlenecks and worked on the views and serializers to remove them. Achieving up to 100x speedups.
  • Architected and implemented a flexible permissions system. The new permissions system optimized the queries for database joins and readability.
  • Worked together with the team to come up with good solutions for the problems that needed to be solved and also to come up with good practices for the codebase.
Technologies: Python 3, Django, Django ORM, PostgreSQL, Web Development, Architecture, Software Design, REST APIs

Assistant Consultant

2016 - 2017
LabWare
  • Performed data analysis for the development of Excel reports from complex SQL queries using both Oracle and SQLServer. Also developed a boilerplate for creating Excel reports that is still being used today.
  • Translated customer wishes in technical requirements and user stories.
  • Implemented complex laboratory workflows in software, allowing users to optimize their analysis.
Technologies: SQL Server 2012, Oracle, SQL, Visual Basic, Laboratory Information Management System (LIMS)

Experience

Open Source Rule Engine

https://github.com/blurg/sauron-engine
A generic engine for rules, ETL, and automation. Written in Python using type annotations as a feature for schema generation and data validation. This library was created to implement a rule engine in a customer project.

Education

2014 - 2016

Master's Degree in Electrical Engineering

São Paulo State University (UNESP) - Ilha Solteira, SP, Brazil

2008 - 2013

Bachelor's Degree in Electrical Engineering

São Paulo State University (UNESP) - Ilha Solteira, SP, Brazil

Skills

Libraries/APIs

REST APIs, Vue 2, Django ORM, Vue

Tools

MATLAB, Docker Compose

Languages

Python, SQL, JavaScript, C, Embedded C, Visual Basic, Python 3

Frameworks

Django, Django REST Framework, Flask

Platforms

Linux, Docker, Oracle

Storage

MySQL, SQL Server 2012, PostgreSQL

Industry Expertise

Project Management

Other

Full-stack, Web Development, APIs, Architecture, Software Design, Data Analysis, FastAPI, Software Architecture, Containerization, Electronics, Control Systems, Laboratory Information Management System (LIMS), Team Leadership

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