Guillermo Gutierrez
Software Engineer at IBM
Chiyoda, Japan
Summary
👤
Senior🎓
Top SchoolGuillermo Gutierrez is a multilingual software engineer with 15 years of experience building mobile, graphics, and enterprise systems across iOS, Android, macOS and Linux. He combines deep low-level skills in C/C++/Objective-C and compilers/debuggers (LLDB, GDB) with modern mobile stacks in Swift, Java, JavaScript and server-side interests in Go and Server-side Swift. At IBM he designs and leads multicultural teams delivering business-critical mobile apps—from aircraft maintenance to banking—and contributes to tooling and CI workflows. An active open-source contributor, he has improved Meson’s Xcode backend and bolstered Xcode test reporting, showing a knack for build systems and cross-platform interoperability. Based in Chiyoda, Tokyo, he brings a rare blend of image-processing/graphics experience (OpenCV, OpenGL) and practical enterprise delivery, and is fluent in English, Spanish and Japanese.
15 years of coding experience
5 years of employment as a software developer
San JoseBS, Engineering and Information Science, BS, Engineering and Information Science at Shibaura Institute of TechnologyUniversidad Nacional de San AgustínME, Engineering and Computer Science, ME, Engineering and Computer Science at Keio University
Spanish, English, Japanese
Stackoverflow
44,348reputation
4.2mreached
318answers
247questions
nsattributedstring
top-1%
ios
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iphone
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objective-c
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ios-simulator
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swift
top-1%
Github Skills (29)
unit-testing10
uitest10
objective-c10
ios10
python10
build-system10
xctest10
xcode10
build-automation10
mesonbuild10
swift10
nsattributedstring10
iphone10
ui-testing10
uilabel10
Programming languages (15)
Github contributions (5)
XCTestHTMLReport/XCTestHTMLReport
Apr 2020 - Oct 2021
Xcode-like HTML report for Unit and UI Tests
Role in this project:
QA Engineer / Test Automation Engineer
QA Engineer / Test Automation EngineerContributions:12 reviews, 33 commits, 12 PRs in 1 year 6 months
Contributions summary:Guillermo's primary focus was on improving the testing infrastructure and functionality of the `xctesthtmlreport` project. Their contributions include fixing a dummy test, implementing the handling of skipped tests in both HTML and JUnit reports, and adding tests for the escaping of special characters in the reports. Furthermore, the user updated the project dependencies and refactored the testing-related files to streamline the unit and functional test process.
xctestreportunithtml-reportswift
mesonbuild/meson
Sep 2018 - Oct 2018
The Meson Build System
Role in this project:Back-end Developer & Automation Engineer
Back-end Developer & Automation EngineerContributions:11 commits, 3 PRs, 15 comments in 19 days
Contributions summary:Guillermo primarily focused on improving the Xcode backend for the Meson build system. Their contributions involved fixing issues related to the Xcode backend, including build failures and incorrect configurations. They addressed bugs related to precompiled headers, argument passing, and assembly files, and also made modifications to the test scripts to ensure they functioned correctly on macOS. Additionally, the user implemented improvements to the Xcode project generation process, incorporating build directory settings and sorting objects for better compatibility.
build-systemmeson
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