Guilherme Trein
Senior Software Engineer at Google
Old Toronto, Ontario, Canada
Summary
🤩
Rockstar🎓
Top SchoolGuilherme Trein is a Senior Software Engineer with 12 years of experience building large-scale, production-critical systems across cloud, robotics, and voice/video media platforms. He currently drives engineering on Gmail Enterprise at Google after leading architecture and resiliency efforts for Amazon’s Alexa Communications and mission-critical fulfillment systems that scaled to hundreds of warehouses. His expertise spans cloud-native services, IIoT/robotics integration, and ML/NLP interests, with hands-on experience in AWS, CDK/CloudFormation, distributed databases, and multiple languages including Java, Kotlin, and Python. An open-source contributor, he improved stability and Python 3 compatibility for google/pinject, showing attention to maintainability and cross-version support. Trained in electrical and advanced systems engineering with an MSc in Computer Science, he blends rigorous academic foundation with practical delivery that has driven measurable operational savings. Based in Toronto, he combines platform-level design with a habit of raising quality and resilience bars across teams.
12 years of coding experience
12 years of employment as a software developer
Bachelor of Engineering (Double Degree), Electrical Engineering, Bachelor of Engineering (Double Degree), Electrical Engineering at Federal University of Rio Grande do SulBachelor of Engineering (Double Degree), Advanced Systems Engineering, Bachelor of Engineering (Double Degree), Advanced Systems Engineering at CentraleSupelecMaster of Science (MSc), Computer Science - Applied Computing, Master of Science (MSc), Computer Science - Applied Computing at University of Toronto
English, French, Portuguese
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (6)
unit-testing10
python10
dependency-injection10
decorator9
lib9
decorators9
Programming languages (13)
Github contributions (5)
google/pinject
Aug 2014 - Sep 2018
A pythonic dependency injection library.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:11 commits, 12 PRs, 7 pushes in 4 years 2 months
Contributions summary:Guilherme primarily contributed to the pinject library by refactoring, fixing tests, and introducing Python 3 compatibility. They updated the library's setup, removed unused variables, and replaced a hard-coded third-party module with a decorator dependency. The user also added support for Python 3 by using the 'six' package and creating unit tests for the new 'support.py' module. These changes improved stability, compatibility and maintainability.
pythoninjectiondependency-injectiondependency-injection-librarypythonic
trein/dev-best-practices
May 2014 - May 2019
Contributions:27 commits, 2 pushes, 1 comment in 5 years 1 month
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