Mario Calderón
Senior Backend Engineer at GitLab
Quito, Pichincha, Ecuador
Summary
🤩
Rockstar🎓
Top SchoolMario Calderón is a Senior Backend Engineer with 12 years building robust Ruby on Rails services and API integrations, currently driving backend work at GitLab. He has deep experience in API development and maintenance—evidenced by contributions refactoring and modernizing Twilio API snippets across PHP and Python—which highlights a pragmatic attention to compatibility and developer experience. Mario’s career spans startups and product teams in Ecuador and remotely, moving from software architect roles to senior engineering at scale. He combines hands-on coding with system design instincts, often improving legacy codebases and tooling to enable smoother platform evolution. Located in Quito, he brings both regional perspective and global open-source engagement to engineering teams.
12 years of coding experience
11 years of employment as a software developer
Systems Engineer Computer Science, Systems Engineer Computer Science at Universidad San Francisco de Quito
Spanish, English
Stackoverflow
515reputation
107kreached
3answers
1question
Github Skills (23)
python10
apidoc10
twilio-api10
php10
api10
rest-api10
git8
monitor7
360-video7
data-synchronization7
security7
synchronized7
synchronize7
synchronization7
data-sync7
Programming languages (12)
Github contributions (5)
TwilioDevEd/api-snippets
Apr 2016 - Nov 2016
Code snippets for the Twilio API Documentation
Role in this project:
Backend Developer & API Developer
Backend Developer & API DeveloperContributions:117 commits, 138 PRs, 557 pushes in 6 months
Contributions summary:Mario primarily refactored PHP code snippets for the Twilio API documentation, focusing on namespace use statements. They updated various PHP files, correcting references and dependencies for several Twilio REST API examples, indicating a focus on backend logic and API integrations. Furthermore, the user upgraded python legacy code, refactored taskrouter PHP snippets, and introduced new Python snippets for IP messaging, lookups, monitor, notify, security, sync, video, and voice. These changes demonstrate a broad understanding of the Twilio platform and a focus on API development and maintenance.
apitwilioapi-documentationsnippetstwilio-api
mcelicalderon/free-bird
Mar 2016 - Aug 2022
Contributions:21 pushes, 1 branch, 1 issue in 6 years 5 months
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