Lucas Leite, Developer in Orlando, FL, United States
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Lucas Leite

Verified Expert  in Engineering

Full-stack Developer

Location
Orlando, FL, United States
Toptal Member Since
March 10, 2020

Lucas is a control and automation engineer who's spent the past several years building web apps for a range of industries, including robotics, health, and education. As an avid programmer, he's mastered development in Python and JavaScript, primarily using frameworks such as Flask, Express.js (Node.js), and React. Having owned a startup with hundreds of thousands of users, Lucas fully comprehends the commitment it takes to build a product from scratch and delivers software with that in mind.

Back-endSaaSData ModelingFront-endFull-stackAmazon RDSData ScrapingWeb ScrapingBig DataCTOEmbedded SystemsWebSocketsFastAPIPythonGitHub

Portfolio

PepsiCo
React, Python, Kubernetes, Amazon Web Services (AWS), Django, APIs...
Toptal Client: Edtech Startup
Amazon Web Services (AWS), Django, Serverless, Sequelize, Node.js, Redux, React...
Chegg
Rapid7, Heroku, Docker Compose, PostgreSQL, TypeScript, RefluxJS, Redux, Sentry...

Experience

Python 3 - 8 yearsJavaScript - 8 yearsDjango - 7 yearsSQLAlchemy - 7 yearsFlask - 7 yearsNode.js - 5 yearsReact - 5 yearsGoogle Cloud Platform (GCP) - 5 years

Availability

Part-time

Preferred Environment

Amazon Web Services (AWS), SQLAlchemy, Sequelize, Next.js, Node.js, React, Docker, Django, Flask, Python, TypeORM, GitHub, NestJS, Amazon DynamoDB

The most amazing...

...thing I've ever done was founding and developing a successful SaaS business with over 100,000 monthly users.

Work Experience

Senior Full-stack Developer

2020 - 2023
PepsiCo
  • Developed business solutions for one of the most iconic American brands.
  • Developed both the back end and front end, delivering SOLID code with sustainable code coverage.
  • Fixed bugs and improved the workflow and pipeline to catch errors better.
Technologies: React, Python, Kubernetes, Amazon Web Services (AWS), Django, APIs, CI/CD Pipelines, Algorithms, Snowflake, Azure, SQL, SaaS, AWS Lambda, Amazon EC2, Amazon RDS, Redis, API Integration, HTML, FastAPI, DevOps, Front-end, Full-stack, Webpack, Terraform, Tailwind CSS, Data Science, B2B, REST APIs, Storybook, OpenAI, OpenAI GPT-3 API, Data Scraping, Web Scraping, Data Modeling, ChatGPT, Material UI

Senior Full-stack Developer

2020 - 2020
Toptal Client: Edtech Startup
  • Implemented features in a Python/Django API. Added models, fixed security issues, added new endpoints, while also increasing code coverage.
  • Developed responsive user experiences in the front end using React and Redux.
  • Increased code-quality using TypeScript, better tests, and improved code standards by refactoring components using SOLID principles.
  • Developed a new service implementing a REST API using Node.js, models in Sequelize, and Lambda functions in AWS using the Serverless Framework.
Technologies: Amazon Web Services (AWS), Django, Serverless, Sequelize, Node.js, Redux, React, Python 3, CI/CD Pipelines, MongoDB, SQL, SaaS, AWS Lambda, Amazon EC2, Amazon RDS, Vercel, Supabase, Next.js, API Integration, HTML, DevOps, Front-end, Full-stack, NoSQL, Webpack, Prisma, B2B, REST APIs, Storybook, Data Scraping, Web Scraping, Material UI

Senior Full-stack Software Engineer

2020 - 2020
Chegg
  • Worked for a major publicly traded American edtech company, building e-learning tools to help people learn to code.
  • Created high-quality React components using TypeScript and Redux with full test coverage using Enzyme, end-to-end testing, and React Testing Library.
  • Developed many features for numerous apps using Python in the back end and React in the front end, including extensive test coverage in both SOLID principles.
  • Built back-end integrations in Python to Salesforce using WebHooks and Syncers.
  • Migrated API integrations from the Google Suite platform to O365 using Microsoft Graph in Azure.
  • Implemented live-chat experiences for students, integrating with several APIs using Python and React.
  • Implemented A/B testing using Optimizely and React SDK.
Technologies: Rapid7, Heroku, Docker Compose, PostgreSQL, TypeScript, RefluxJS, Redux, Sentry, Docker, React, Python 3, CI/CD Pipelines, Algorithms, GraphQL, MongoDB, Vue, SQL, SaaS, Salesforce API, Stripe, Next.js, API Integration, HTML, DevOps, Front-end, Full-stack, Microservices, Webpack, WebSockets, REST APIs, Storybook, Data Scraping, Web Scraping, Data Modeling, Material UI

Senior Full-stack Software Engineer

2019 - 2019
Soccer Fantasy Game
  • Developed the full stack of a mobile app for a Serie A Brazilian soccer team using several languages and frameworks: Python, JavaScript, Node.js, Express, Flask, and Django.
  • Created a ready-to-scale microservice in GCP and developed numerous REST APIs written in Python and Node.js.
  • Implemented a monitoring and logging stack with Metabase and Sentry, including comprehensive dashboards with the main KPIs as well as usage alerts.
Technologies: Django, Express.js, Python, Python 3, JavaScript, Heap, Sentry, Metabase, React, Node.js, MongoDB, SQL, SaaS, Team Leadership, AWS Lambda, Amazon EC2, Amazon RDS, Redis, API Integration, Trading, HTML, DevOps, Front-end, Full-stack, NoSQL, Architecture, Data Modeling

Senior Full-stack Software Engineer

2017 - 2019
Menu Mais
  • Developed a digital restaurant platform featuring a digital menu with translations in over 100 languages, takeout, and dine-in ordering.
  • Implemented challenging features with a high level of customizability, including user and user-less ordering system, integration with several third-party providers, kitchen monitoring systems, and several menu variances.
  • Created a fully responsive progressive mobile app featuring auto-translation, payments, and SMS integrations.
  • Implemented a robust restaurant monitoring dashboard for the managers and owners.
Technologies: Flask, Express.js, Python, Python 3, JavaScript, React, SQL, SaaS, Team Leadership, AWS Lambda, Amazon RDS, Redis, HTML, DevOps, Front-end, Full-stack, Architecture, CTO, B2B, REST APIs, Data Scraping, Web Scraping, Data Modeling

Senior Full-stack Software Engineer

2017 - 2019
Ouvimos Você
  • Expanded the product's full stack from zero to thousands of daily users, solving a growing business's significant problems: Scalability and constant business model changes. Used Python for the back end and JavasScript for the front end.
  • Modeled the database using the popular ORM SQLAlchemy, writing all class models, and mapping the relationships. Deployed to GCP using Cloud SQL and PostgreSQL.
  • Developed the front end using server-side rendering for some pages and JavaScript for portions of the software that required single-page application (SPA) experiences.
  • Constructed a distributed microservice infrastructure using Docker, Docker-compose, and NGINX proxying. Hosted it in the Google Cloud Platform (GCP) as well as in AWS.
  • Implemented the company engineering culture bringing in the Agile methodology, scrum, code reviews, and paired development sessions.
  • Integrated several platforms to the SaaS solution: Heap, Sentry.io, dashboards in Metabase, RD Station (marketing automation), and HubSpot Sales.
Technologies: Flask, Express.js, Python, Python 3, JavaScript, Sentry, Metabase, React, Docker, Google Cloud Platform (GCP), MySQL, Node.js, SQLAlchemy, Technical Leadership, Software Architecture, SQL, SaaS, Team Leadership, AWS Lambda, Amazon RDS, Redis, HTML, DevOps, Front-end, Full-stack, NoSQL, Microservices, Elasticsearch, Market Research, Big Data, Architecture, CTO, REST APIs, Data Modeling

Senior Full-stack Software Engineer

2014 - 2019
Labfy
  • Developed the whole back end using Python/Flask and server-side rendering using Jinja.
  • Implemented a feature-management system with Python/Flask Principal for five different user types.
  • Integrated Microsoft Active Directory servers with clients using LDAP to obey the client's company compliance.
  • Fully developed single-page application front-end experiences using JavaScript.
  • Deployed in Google Cloud Platform (GCP) using Docker and NGINX proxying.
Technologies: Amazon Web Services (AWS), Flask, Express.js, Python, Python 3, JavaScript, Sentry, Metabase, Docker, Google Cloud Platform (GCP), MySQL, Node.js, SQLAlchemy, SQL, SaaS, Team Leadership, AWS Lambda, HTML, DevOps, Front-end, Full-stack, Architecture, CTO, Enterprise SaaS, B2B, REST APIs, Data Modeling

Founder

2013 - 2019
Faz Labs
  • Founded Faz Labs, a hardware and software company. Shipped software products for hundreds of business clients.
  • Engineered a drone-accessory to combat endemic diseases—Yellow Fever, Malaria, and chikungunya—spreading in partnership with the Brazilian health-public sector. The device released pesticides to destroy mosquitoes' nests.
  • Engineered embedded hardware using electronics and microcontrollers' expertise aided by Eagle CAD and engineering enclosures and mechanisms using SolidWorks and 3D printing.
  • Developed a park-cleaning robot, writing low-level code in C and a higher abstraction layer in Python. Winner of the international "Laureate Award for Excellence in Robotics Engineering."
Technologies: Amazon Web Services (AWS), Flask, Python, Python 3, JavaScript, C, Sentry, Metabase, React, Docker, Google Cloud Platform (GCP), MySQL, Node.js, SQLAlchemy, SQL, SaaS, Team Leadership, AWS Lambda, HTML, Back-end, DevOps, Front-end, Full-stack, Architecture, CTO, REST APIs, Data Modeling, Embedded Systems, Internet of Things (IoT), ESP32

Ouvimos Você (We Hear You)

http://www.ouvimosvoce.com.br
I developed a feedback platform that connects customers to business owners and people that will solve their problems. The goal was to have a smooth, direct line of contact between customers and the customer service representatives of the companies and avoid poor reviews on social networks. The solution had a good market fit with a range of industries, including hospitals, schools, restaurants, and massive festivals and fairs.

Menu Mais

I developed a digital restaurant platform focusing on translating into over 100 different languages. As I had a significant number of clients in tourism, we took the initiative to develop a product to better approach an international client who was exploring a city.

Thinkful

https://www.thinkful.com
Thinkful is an online education platform with career support to get students new jobs and lifelong careers. Founded in 2012, Thinkful is a 100% remote company with over 600 employees dedicated to students' learning journey.

Languages

TypeScript, JavaScript, Python 3, Python, CSS, SQL, HTML, CSS3, C, GraphQL, Snowflake

Frameworks

Django, Next.js, Express.js, Flask, Material UI, NestJS, Tailwind CSS, YARN, Redux

Libraries/APIs

React, Node.js, SQLAlchemy, REST APIs, Vue, Salesforce API, RefluxJS, Stripe

Tools

WebStorm, Postman, GitHub, Prisma, Mocha, Sequelize, Webpack, Terraform, PyCharm, Sketch, Slack, Sentry, Docker Compose, Mongoose, Jenkins

Paradigms

DevOps, Microservices, B2B, Data Science

Platforms

Docker, Google Cloud Platform (GCP), Amazon Web Services (AWS), AWS Lambda, Amazon EC2, Kubernetes, Azure, Vercel, MacOS, Heroku, Rapid7

Storage

MySQL, PostgreSQL, MongoDB, Redis, NoSQL, Amazon DynamoDB, Elasticsearch, Google Cloud

Other

APIs, SaaS, Amazon RDS, API Integration, Back-end, FastAPI, Front-end, Full-stack, Market Research, Big Data, Architecture, CTO, WebSockets, Storybook, Data Scraping, Web Scraping, Data Modeling, Embedded Systems, MERN Stack, TypeORM, CI/CD Pipelines, Technical Leadership, Software Architecture, Algorithms, Team Leadership, Trading, Enterprise SaaS, OpenAI, OpenAI GPT-3 API, ChatGPT, Internet of Things (IoT), ESP32, Metabase, Heap, Serverless, Robotics, Business Development, English, Software, Engineering, Artificial Intelligence (AI), Supabase

2019 - 2020

English Program in An Intensive Language Program (English)

Valencia College - Orlando, FL, USA

2013 - 2019

Bachelor's Degree in Control and Automation Engineering

Salvador University - Salvador, Brazil

AUGUST 2019 - PRESENT

Modern React with Redux and Hooks

Udemy

JUNE 2017 - PRESENT

Excellence in Robotics Engineering (1st, World)

Laureate Education, Inc.

JUNE 2017 - PRESENT

James McGuire Business Plan Competition Award

Laureate Education, Inc.

JUNE 2016 - PRESENT

Excellence in Robotics Engineering (2nd, World)

Laureate Education, Inc.

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