Samuel Brandão
Senior Staff Software Engineer II - Tech Leadership at Oyster®
São Paulo, Brazil
Summary
👤
Senior🎓
Top SchoolSamuel Brandão is a Senior Staff Software Engineer and tech leader with 12 years of experience building scalable web applications and guiding distributed teams, currently leading technical efforts at Oyster®. He blends pragmatism and creativity to simplify priorities, reduce development overhead, and design cost- and time-efficient infrastructure, APIs, and products. A hands-on engineer who learned to code as a child, he specializes in Ruby on Rails, PostgreSQL, GraphQL and modern React/Next.js frontends while driving CI/CD, observability and performance optimizations in production. As a co-founder and former CTO, he shipped payment and financial modules, solved concurrency and deadlock challenges at scale, and established coding standards that improved maintainability across teams. Calm, analytical and empathetic, he champions beautiful, well-tested code that enables rapid, safe refactoring and continuously shipping value. He also contributes to the OSS community as the author and maintainer of the rspec-graphql_matchers Ruby gem.
11 years of coding experience
19 years of employment as a software developer
University of Milan
Portuguese, Italian, English
Github Skills (85)
graphiql10
rspec10
api10
graphql-api9
ruby9
relay9
graphql9
rails9
graphql-ruby8
slug8
plugin8
mvc7
unsafe7
backend7
ruby-on-rails7
Programming languages (5)
Github contributions (5)
khamusa/rspec-graphql_matchers
Sep 2016 - Dec 2021
Collection of rspec matchers to test your graphQL api schema.
Contributions:16 releases, 3 reviews, 72 commits in 5 years 3 months
apigraphql-apigraphiqlmatchersrspec
letsevents/docker-heroku-ruby
May 2017 - Jul 2020
Ruby image for the heroku-docker project
Contributions:4 PRs, 8 pushes, 4 branches in 3 years 2 months
herokudockerrubyheroku-docker
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