James Coggan
Engineering Manager at Ledgy
Seville, Andalusia, Spain
Summary
🤩
Rockstar🎓
Top SchoolJames Coggan is an engineering manager and seasoned mobile systems leader with 11 years of experience building robust Android and end-to-end testing infrastructure for large-scale products. He has driven major reliability and efficiency gains at Meta—cutting Android test flakiness by 80%, halving screenshot test capacity, and upgrading a billion daily tests—while also leading mobile delivery at American Express across 21 markets. A pragmatic architect and coach, he combines hands-on Android development (Jetpack Compose, Coroutines, Hilt, Room) with CI/CD and testing expertise to ship measurable improvements in speed and quality. He contributes to open-source tooling for device automation (notably fixes to Facebook’s idb for iOS device interactions), showing cross-platform fluency beyond Android. Based in Seville, he’s recognized as a Google Developer Expert for IoT and is known for translating complex testing and mobile challenges into scalable, developer-friendly systems.
11 years of coding experience
15 years of employment as a software developer
Mackenzie Presbyterian University
Portuguese, English, Spanish
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (5)
objective-c10
ios10
command-line-interface9
testing8
file-management7
Programming languages (5)
Github contributions (5)
facebook/idb
May 2021 - Sep 2022
idb is a flexible command line interface for automating iOS simulators and devices
Role in this project:
Mobile Developer (iOS)
Mobile Developer (iOS)Contributions:7 commits in 1 year 4 months
Contributions summary:James primarily contributed to the `idb` project by fixing bugs and implementing features related to iOS device interaction. Their work involved modifying code in Objective-C files to address issues with device targeting, file management (pulling files to folders), and the overall logic of running tests on iOS devices. These modifications improved the functionality and reliability of the command-line interface for automating iOS simulators and devices. They also worked on test suite adjustments, ensuring the proper operation of the tool.
command-line-interfaceios-simulator
jamescoggan/jamescoggan.github.io
Dec 2017 - Jun 2026
Contributions:28 pushes, 1 branch in 8 years 7 months
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