Lucas Galego, Developer in Lakeland, United States
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Lucas Galego

Verified Expert  in Engineering

Software Developer

Lakeland, United States
Toptal Member Since
May 18, 2020

Lucas is a generalist with a passion for solving problems. Most of his experience is in web development in a variety of stacks, but he has also worked with multiplatform desktop apps, mobile apps, and data-heavy back-end systems. Lucas is a team player who likes to collaborate to build tools, solutions, and products that are out of the ordinary and disrupt the status quo.


Redis, PostgreSQL, Redux, TypeScript, React, Ruby on Rails (RoR), Ruby
MySQL, Docker, Kubernetes, Go
Redis, Sidekiq, RabbitMQ, PostgreSQL, React, Ruby on Rails (RoR), Ruby




Preferred Environment

Linux, Slack, Vim Text Editor

The most amazing...

...system I've developed decided and notified every Instacart shopper about all the deliveries they would be responsible for.

Work Experience

Tech Lead Manager

2018 - PRESENT
  • Led the development of a programmatic OOH advertising platform with third-party API integrations and a rich user interface.
  • Optimized queries and structured cache mechanisms to improve the scalability and general stability of the web app.
  • Developed an overview of the OOH markets displaying over 600,000 units of inventory in a live map interface.
Technologies: Redis, PostgreSQL, Redux, TypeScript, React, Ruby on Rails (RoR), Ruby

Tech Lead

2017 - 2018
  • Developed a monitoring system that enables customers to check the health of their virtual machines running on the DigitalOcean cloud.
  • Increased reliability of the monitoring system by consuming the monitoring data from Kafka topics.
  • Implemented a notification integration with slack and a webhook notification system.
Technologies: MySQL, Docker, Kubernetes, Go

Senior Software Engineer

2015 - 2017
  • Developed the assignment system for all deliveries that informed every shopper about their next delivery.
  • Built an operational dashboard for the shopper support team, showing the current state and next step for every shopper. I developed visual alerts for delayed deliveries and integrated chat to communicate with the shoppers.
  • Developed a user-activation email campaign that sent a collection of emails over 21 days, inviting users who created an account but didn't place an order to use the product. I also ran A/B test and got great results.
  • Improved the overall infrastructure of the development environment by creating the prototype of what became the hub of communication between the back-end services that powers the business.
Technologies: Redis, Sidekiq, RabbitMQ, PostgreSQL, React, Ruby on Rails (RoR), Ruby

Senior Software Engineer

2014 - 2015
  • Provided consulting for a variety of customers, helping them shape their products, develop MVPs, or scale their systems.
  • Developed new features and improved legacy code on Adobe Tag Manager.
  • Built the first version of Barnes & Noble's textbook digital platform called Yuzu.
Technologies: JavaScript, Ruby on Rails (RoR)

Senior Software Engineer

2010 - 2013
  • Developed an integration with Facebook's Open Graph API to create social widgets for a news portal.
  • Created a recommendation system based on collaborative filtering to find articles that would match a user profile.
  • Built a real-time analytics system showing news editors which news items were converting more at a given time and providing insights on how to improve the wording and formatting to increase conversion.
Technologies: Redis, MySQL, JavaScript, Python, Java, Ruby on Rails (RoR), Sinatra, Ruby

Server Performance Monitoring and Alerts
This Golang back-end application receives millions of signals for droplets (virtual machines) and creates rich dashboards that show the state of the servers and lets you configure alerts based on that data.

User Acquisition Email Campaign for Instacart
This email campaign used rich content and fun copy to engage users who had signed up at Instacart but hadn't converted. I created the infrastructure to send thousands of emails every day, integrating with Sendgrid. I set up all the schedules to send different emails after n days of user account creation. I also ran the campaign with A/B testing and got great results.

Real-time Analytics for is one of the biggest website portals in Latin America. I architected and developed a real-time analytics system to track overall user behavior across the portal. The system ranked the most popular news and provided a dashboard with conversion metrics for every entry on the home page.


Ruby, JavaScript, TypeScript, SQL, HTML, Java, CSS, Python, Go, Clojure


Ruby on Rails (RoR), Jest, Sinatra, Redux


React, Node.js, Sidekiq


GitHub, Vim Text Editor, Slack, RabbitMQ


Heroku, Docker, Linux, Kubernetes


MySQL, Databases, PostgreSQL, Redis, MongoDB

2004 - 2008

Bachelor's Degree in Computer Science

The Federal University of Uberlândia - Minas Gerais, Uberlândia, Brazil