Jeferson Calazans
Fullstack Engineer, Consulting at JC Technologies
Rio de Janeiro, Brazil
Summary
👤
Senior🎓
Top SchoolJeferson Calazans is a versatile fullstack engineer with 14 years of professional experience and a formal Computer Science background, currently consulting for fast-growing U.S. startups from Rio de Janeiro. He has a deep history building web platforms across payments and e-commerce, most recently shaping Elixir/Phoenix-based post-purchase systems and React dashboards at Malomo. Comfortable across Go, Node.js, Python, Ruby and modern front-end stacks, he blends backend domain modeling, API design (REST/GraphQL) and integration work with practical DevOps practices like Docker and PostgreSQL. Known for adapting quickly to new domains, he pairs product-oriented engineering with close collaboration across customer success and sales teams. An open-source enthusiast, he steadily contributes to projects and libraries while favoring pragmatic, well-tested solutions that scale.
14 years of coding experience
12 years of employment as a software developer
Bachelor's degree Computer Science, Bachelor's degree Computer Science at UERJ/ZO - Unidade Estrategica da Zona OesteAssociate's degree Informatics, Associate's degree Informatics at ETERJ - Escola Técnica do Rio de Janeiro
English, Portuguese
Stackoverflow
13reputation
2kreached
0answers
2questions
Github Skills (78)
gulp10
rio9
site-builder9
testing9
starter-kit9
one-liner9
rspec9
unlock9
sudoku9
page-builder9
drag-and-drop9
que9
brazil8
site-generator8
ruby8
Programming languages (8)
Github contributions (5)
calazans10/python-para-zumbis
Sep 2013 - Oct 2014
Contributions:31 commits in 1 year 1 month
cursopython
calazans10/gulp-workflow
Mar 2014 - Apr 2021
My gulp workflow
Contributions:95 commits, 30 PRs, 61 pushes in 7 years 1 month
gulp-workflowgulp-startergulpworkflow
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