Mauricio Zaffari
Lead Software Engineer at Looper Insights
Paraná, Brazil
Summary
👤
Senior🎓
Top SchoolMauricio Zaffari is a Lead Software Engineer with 16 years of experience specializing in Ruby on Rails since 2008 and a proven full-stack fluency that includes Vue.js, React, Angular and legacy jQuery migrations. He combines hands-on application modernization—upgrading monoliths, trimming technical debt (deleted 74% of legacy code at Kinscape) and raising test coverage to ~90%—with practical DevOps experience using CircleCI, Semaphore, GitHub Actions and deployments on Heroku, DigitalOcean and AWS. Mauricio excels at performance optimization, routinely cutting page load times from seconds to sub-second, and shifting frontends to API-driven architectures. Based in Paraná, Brazil, he leads teams at Looper Insights while retaining a mentor mindset from long-term coaching and contractor roles, making him comfortable in both product-focused startups and client-driven projects. An engineer who prefers shipping measurable impact, he often balances deep backend refactors with crisp, modern front-end rewrites.
16 years of coding experience
13 years of employment as a software developer
Bachelor's degree, Automation, Mechanics, Electronics, Physics, Math, 3D Drawing, Bachelor's degree, Automation, Mechanics, Electronics, Physics, Math, 3D Drawing at Faculdade Assis GurgaczTechnician, Hardware, Software, Eletronics, Networks, Technician, Hardware, Software, Eletronics, Networks at Colégio Anglicano Barão do Rio BrancoBachelor of Technology (B.Tech.), Information Systems, Math, Alghorithm, Databases, Java, Python, Business & Administration, Bachelor of Technology (B.Tech.), Information Systems, Math, Alghorithm, Databases, Java, Python, Business & Administration at Faculdade Dom Bosco
Portuguese, English
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (85)
ruby10
admin10
rails10
mongoid10
text-search10
database9
dashboard9
html-editor9
activeadmin9
heroku9
wysiwyg9
ruby-on-rails9
sinatra9
rich-text-editor9
buildpack9
Programming languages (5)
Github contributions (5)
mongoid/mongoid_search
Sep 2010 - Sep 2016
Simple full text search for Mongoid ORM
Contributions:103 commits, 15 PRs, 12 pushes in 6 years
full-text-searchmongoidfull-texttext-searchdatabase
mauriciozaffari/administrate
Dec 2018 - Mar 2025
A Rails engine that helps you put together a super-flexible admin dashboard.
Contributions:21 pushes, 4 branches in 6 years 4 months
ruby-on-railsadminrailsrails-engineruby
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