Guillermo Kardolus
Engineer at Treeswift
New York, New York, United States
Summary
👤
Senior🎓
Top SchoolGuillermo Kardolus is a Senior Staff Engineer in New York with 9 years of experience delivering scalable, cloud-native software across platforms from buildpacks to IAM controls. He has led and built core platform infrastructure at Cloudera and Spotify, including identity and access management, scalable smart speaker tooling, and a data-driven reporting system for blockchain activity. He contributed to the Cloud Foundry PHP buildpack, extending compatibility and testing, and has hands-on Kubernetes, API gateway, and microservices experience—building token auth services and high-throughput messaging/backends. His background as an astrophysicist informs a rigorous, hypothesis-driven approach to reliability, observability, and performance under load. A proven cross-disciplinary contributor, he blends science, software engineering, and platform strategy to reduce fragmentation and accelerate delivery. Based in New York, Guillermo balances a demanding engineering career with surfing and marathon running, bringing focus and endurance to complex systems challenges.
10 years of coding experience
15 years of employment as a software developer
BSc., Physics and Astronomy, BSc., Physics and Astronomy at University of Amsterdam
English, Dutch, Spanish, German
Stackoverflow
173reputation
6kreached
6answers
5questions
Github Skills (16)
buildpack10
testing10
php10
cloud-foundry10
go9
vb69
vbe9
vbnet9
garbage-collection6
atom-editor6
react-native-maps6
javascript6
react-native6
security6
redux6
Programming languages (12)
Github contributions (5)
cloudfoundry/php-buildpack
Nov 2018 - Jul 2019
A Cloud Foundry Buildpack for PHP.
Role in this project:
Backend & QA Engineer
Backend & QA EngineerContributions:20 commits, 3 PRs, 17 pushes in 7 months
Contributions summary:Guillermo contributed to the PHP buildpack, focusing on testing and extension support. They added support for the maxmind extension and addressed compatibility issues with different buildpack configurations (cflinuxfs2/cflinuxfs3). The user also removed older PHP versions from tests and increased timeout values for tests.
foundrycloud-foundryphpv2bbuildpack
cloudfoundry/stack-auditor
Nov 2018 - Aug 2019
Stack Auditor is a cf CLI plugin that provides commands for listing apps and their stacks, migrating apps to a new stack, and deleting a stack.
Contributions:33 commits, 2 PRs, 28 pushes in 8 months
cf-clistackscf-cli-plugincli-pluginauditor
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