Guillermo Perez
Sr. Full Stack Developer at Selenium
Vicente López, Buenos Aires, Argentina
Summary
👤
Senior🎓
Top SchoolGuillermo Perez is a senior full stack developer with over a decade of experience building scalable, user-centric web applications across healthcare, fintech, agritech, and creator platforms. He excels in front-end performance and testability—having reduced page load times from 10s to 0.5s and established robust React Testing Library suites—and routinely drives UX improvements in close collaboration with product and design. Comfortable owning full delivery lifecycles, he’s deployed PWAs for offline inspections, handled production monitoring and recoveries, and resolved tricky concurrency and data-ingestion bugs. He mentors teams, serves as Scrum Master, and champions clean component composition and decoupling to turn trainee projects into market-ready products. Based in Vicente López, Argentina, he combines hands-on coding with support-run problem solving and a knack for translating operational pain points into durable technical fixes.
10 years of coding experience
12 years of employment as a software developer
Systems analyst, Computer and Information Sciences, General, Systems analyst, Computer and Information Sciences, General at ORT ArgentinaLicentiate degree, Computer Systems Analysis, Licentiate degree, Computer Systems Analysis at Universidad CAECE
Spanish, English
Github Skills (200)
http-client10
visual-studio10
browser10
nodejs10
xmlhttprequest10
editor10
ajax10
microsoft10
javascript10
electron10
typescript10
vscode-extension10
vscode10
visual-studio-code10
laravel-passport9
Programming languages (13)
Github contributions (5)
libasoles/spotify-exercise
Jul 2019 - Jul 2019
Demo project with Spotify API
Contributions:33 commits, 11 pushes, 1 branch in 14 days
apidemo-projectspotifynodejsspotify-web-api
libasoles/stubb
Mar 2017 - Jun 2017
Contributions:52 PRs, 77 pushes, 2 branches in 2 months
notesnodejs
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.