Guilherme D'alessandro
Senior Software Engineer at Skip
São Paulo, Brazil
Summary
🤩
Rockstar🎓
Top SchoolGuilherme D'alessandro is a Senior Software Engineer based in São Paulo with 7 years of experience building and modernizing high‑traffic web and mobile platforms using React Native, Next.js, and TypeScript. He has driven measurable improvements in performance, availability, accessibility, and security—leading a migration that cut LCP by ~1000ms, boosted accessibility scores from 60 to 97, and raised platform availability to near five‑nines. At IBM he modernized a field technicians' mobile app with Expo and EAS workflows and created an efficient release pipeline and versioning strategy; at Rocket Lawyer he migrated legacy AngularJS systems to Next.js while implementing paywalls, A/B experiments, and CI/CD for daily deploys. Fluent in English and experienced with international teams, he pairs strong communication with a data‑driven approach to product decisions. He also has hands‑on experience automating ML model retraining workflows and integrating cloud storage for reliable data pipelines—an often overlooked bridge between backend automation and front‑end reliability.
7 years of coding experience
7 years of employment as a software developer
Bachelor of Computer Science, Computer Science, Bachelor of Computer Science, Computer Science at Universidade Anhembi Morumbi
English, Portuguese
Github Skills (61)
trpc10
framework710
t3-stack10
javascript10
mbaas10
ios10
postgresql10
react-native10
zod10
css10
expo10
open-source10
typescript10
nextjs10
microfrontend10
Programming languages (6)
Github contributions (5)
ouwargui/schedy
Dec 2024 - Jan 2025
Schedy is the last calendar menu bar app you'll need
Contributions:23 releases, 47 PRs, 83 pushes in 1 month
calendarmacosmenubarswiftui
ouwargui/guisantos.dev
May 2023 - Sep 2024
My personal website
Contributions:1 PR, 71 pushes, 3 branches in 1 year 3 months
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