Gabriel Massadas
Senior System Engineer at Cloudflare
Lisbon, Lisbon, Portugal
Summary
🤩
Rockstar🎓
Top SchoolGabriel Massadas is a Senior System Engineer with 11 years of hands-on experience building cloud-native and serverless systems, currently scaling developer-facing infrastructure at Cloudflare in Lisbon. He progressed from early internships and part-time work during his computer engineering degree to driving backend and full-stack improvements for Cloudflare Workers and Wrangler, including adding AI fetcher APIs and enhancing CLI templates. Comfortable across Python, DevOps, and JavaScript/Wasm runtimes, he blends production-grade engineering with practical UX for developer tools. His open-source contributions to the prominent cloudflare/workerd and workers-sdk repos reflect a focus on enabling AI capabilities at the edge and improving local development workflows. A proven self-starter who once commuted two hours daily to chase learning opportunities, he brings persistence and a practitioner’s empathy to complex distributed systems.
11 years of coding experience
7 years of employment as a software developer
Bachelor's degree Computer Engineering, Bachelor's degree Computer Engineering at Polytechnic of Leiria
English, Portuguese
Stackoverflow
17reputation
15kreached
0answers
3questions
Github Skills (27)
javascript10
apidoc10
testing10
typescript10
intergration10
cloudflare-workers10
integrations10
api-ai10
jscript10
api10
ai10
typescript-types10
serverless10
typescripts10
cli10
Programming languages (10)
Github contributions (5)
cloudflare/workerd
Feb 2024 - Apr 2025
The JavaScript / Wasm runtime that powers Cloudflare Workers
Role in this project:
Back-end Developer
Back-end DeveloperContributions:35 reviews, 25 PRs, 47 comments in 1 year 2 months
Contributions summary:Gabriel primarily focused on adding and modifying the Workers AI fetcher API within the `workerd` repository. Their contributions involved creating the necessary interfaces, implementing core functionality for interacting with the AI service, and adding tests to ensure the API's proper function. They also addressed linting errors and review feedback. This work is crucial for enabling applications and services to leverage AI capabilities within the Cloudflare Workers environment.
cloudflarejavascriptpowersruntimeservice-worker
cloudflare/workers-sdk
Nov 2022 - Nov 2022
⛅️ Home to Wrangler, the CLI for Cloudflare Workers®
Role in this project:Full-stack Developer
Full-stack DeveloperContributions:16 reviews, 2 commits, 21 PRs in 4 days
Contributions summary:Gabriel primarily contributed to the `cloudflare/workers-sdk` repository by adding and modifying features related to the creation and management of Cloudflare Workers. Their work included adding new templates, such as the OpenAPI template, enhancing the functionality of the Wrangler CLI, particularly regarding Workers AI integration, and fixing bugs related to AI binding in the local development environment. They also made updates to the chatgptPlugin template and deprecated and addressed the constellation binding.
cloudflarejavascriptserverlessworkerstypescript
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.