Sadjow Leão
Staff Engineer & Senior Tech Lead at Stack Builders
Greater Natal Brazil
Summary
🤩
Rockstar🎓
Top SchoolSadjow Leão is a Staff Engineer and Senior Tech Lead with 13+ years of hands-on experience building and operating web-scale applications, primarily for New York clients while based in Greater Natal, Brazil. He brings deep backend expertise in Ruby on Rails, Node.js, PHP and functional languages like Clojure and Elixir, plus strong DevOps skills using Docker, Ansible and Nix/NixOS to orchestrate bare-metal and cloud deployments. At Stack Builders he leads distributed-system work (notably the spireworks.org lighting control system) and mentors teams while driving architecture and delivery. Earlier roles include PCI-sensitive payment systems, mobile apps and a history of refactoring monoliths into tested microservices, demonstrating a focus on reliability and compliance. A former army reserve officer trainee, he pairs disciplined leadership and remote-collaboration experience with a curiosity for new tech and a history of building things end-to-end—from Xbox game prototypes in C# to production SaaS.
13 years of coding experience
5 years of employment as a software developer
Bachelor of Information Systems, Information Technology, Bachelor of Information Systems, Information Technology at Universidade Potiguar
Stackoverflow
133reputation
36kreached
4answers
0questions
Github Skills (168)
env10
realtime10
experiences10
pushy10
windows-phone10
ruby10
vuejs210
relay10
javascript10
type-check10
linux10
docker-compose10
dotenv10
push-notifications10
sign-in-with-apple10
Programming languages (14)
Github contributions (5)
stackbuilders/nuxt-utm
May 2024 - Mar 2025
Nuxt 3 module for capturing and tracking UTM parameters from URLs, with additional contextual data collection.
Contributions:7 releases, 19 reviews, 13 PRs in 10 months
nuxtnuxt-modulenuxt-modulesnuxt3utm
sadjow/makesure
Oct 2014 - May 2015
Contributions:163 commits, 4 PRs, 10 pushes in 7 months
javascriptvalidatorjavascript-objectvalidation
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