Marcos Tapajós
Contract Senior Software Engineer at Decisiv, Inc.
Rio de Janeiro, Brazil
Summary
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Rockstar🎓
Top SchoolMarcos Tapajós is a contract Senior Software Engineer and architect with 20 years of professional experience, fluent in Ruby (since 2005), Elixir and JavaScript, and based in Rio de Janeiro. He specializes in designing reliable APIs and backend systems—recently building GraphQL services with Elixir/Absinthe—and has led high-risk rewrites and platform reliability efforts across startups and larger teams. A long-time open-source contributor, he’s worked on notable Ruby tooling like the couchrest CouchDB client, improving core replication and dependency reliability. Marcos pairs hands-on implementation with architectural ownership, mentoring peers and guiding prioritization to deliver pragmatic, maintainable solutions.
21 years of coding experience
12 years of employment as a software developer
Bachelor of Computer Science, Computer Science, Bachelor of Computer Science, Computer Science at Universidade Federal do Rio de Janeiro
Portuguese, English
Stackoverflow
546reputation
16kreached
20answers
0questions
Github Skills (16)
testing10
couchdb10
rest-api10
ruby10
databases9
database9
versioning8
graphql6
puma6
ecto6
plug6
bundler6
absinthe6
elixir6
phoenix-framework6
Programming languages (9)
Github contributions (5)
couchrest/couchrest
Nov 2009 - Feb 2013
A minimalist CouchDB client in ruby
Role in this project:
Back-end Developer
Back-end DeveloperContributions:51 commits in 3 years 3 months
Contributions summary:Marcos primarily contributed to the core functionality of the CouchDB client library. Their commits focused on modifying the `ExtendedDocument` class, altering the version number, and improving replication and database functionalities. They also added new specs to test issue #15, reflecting their role in ensuring the library's reliability and functionality. The user also worked on correcting gem dependencies.
couchdbruby
paytonrules/selenium-on-rails
Oct 2008 - Nov 2009
The "official" Selenium On Rails repository, synced with OpenQA.
Contributions:20 commits in 1 year
railsselenium
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