Daniel Troitiño
Software Engineer at Facebook
San Francisco, California, United States
Summary
🤩
Rockstar🎓
Top SchoolDaniel Troitiño is a software engineer with 18 years of experience, based in San Francisco, specializing in mobile and web applications with deep expertise in Ruby/Rails, Objective-C/Swift, and systems-level C/C++. He has delivered product-quality mobile experiences at companies like Fitbit, Pebble, Tuenti and Facebook, and has a track record of improving performance and reliability in streaming, push, and messaging systems. An active open-source contributor, Daniel has enhanced components of the Swift ecosystem and Python bindings for libgit2, adding features and fixing low-level bugs and cross-platform edge cases. He brings a pragmatic, test-focused approach—often addressing undefined behavior, build stability, and compiler/importer issues—that improves long-term maintainability. With an engineering degree and a master’s in IT from Universidad Politécnica de Madrid, he combines academic foundations with startup and large-company product experience. Colleagues describe him as a quietly persistent problem-solver who surfaces subtle bugs before they reach users.
18 years of coding experience
7 years of employment as a software developer
Ingeniero, Informática, Ingeniero, Informática at Universidad Politécnica de Madrid
English, German
Stackoverflow
3,319reputation
160kreached
57answers
3questions
ios
top-5%
objective-c
top-5%
Github Skills (37)
git10
objective-c10
lib10
python10
foundation10
testing10
git-repository10
build-system10
code-library10
foundation-sites10
c1110
package-repository10
c1710
compiler-design10
swift10
Programming languages (15)
Github contributions (5)
swiftlang/swift-corelibs-foundation
Aug 2018 - Jan 2020
The Foundation Project, providing core utilities, internationalization, and OS independence
Role in this project:
Back-end Developer & Test Automation Engineer
Back-end Developer & Test Automation EngineerContributions:76 commits, 84 PRs, 18 pushes in 1 year 4 months
Contributions summary:Daniel primarily contributed to bug fixes and improvements in the Swift Foundation library. Their work included addressing an undefined behavior issue in double hashing on 32-bit platforms and fixing an argument order error in `CFArraySetValueAtIndex`. They also fixed issues related to `DateFormatter` behavior and improved the cookie parsing algorithm. Furthermore, they developed and refined tests, including tests for `CachedURLResponse`, and enhanced existing test suites by removing optional usages.
tvostranslationinternationalizationfoundationindependence
swiftlang/swift
Jun 2022 - Dec 2022
The Swift Programming Language
Role in this project:Back-end Developer
Back-end DeveloperContributions:168 reviews, 11 commits, 510 PRs in 5 months
Contributions summary:Daniel primarily contributed to the Swift programming language compiler and its associated tools. Their work involved enhancing the Clang importer to support struct fields with ARC pointers and improving the handling of experimental reflection features. They also made changes related to build processes, including modifying CMake scripts and correcting tests to ensure proper functionality and compatibility with different build configurations, such as unified builds. Furthermore, the user addressed issues related to the backtracing library and test stability, adding build requirements and fixing tests that broke in the absence of certain features.
swift-programmingswift-programming-languageprogramming-languageswift
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.