Philipp Wollermann
Staff Software Engineer at Google
Shibuya, Japan
Summary
🤩
Rockstar🎓
Top SchoolPhilipp Wollermann is a Staff Software Engineer with 14 years of experience building and scaling developer-facing infrastructure, currently managing Chromium's build team in Tokyo and leading Google Hosted Libraries CDN. He blends deep build-system expertise with site reliability practices, having led Google's Bazel open-source team and contributed key fixes around sandboxing, persistent workers, and cross-platform releases. Philipp is a hands-on automation engineer and release maintainer (notably improving Bazelisk and ARM releases) who also writes clear documentation and CI tooling to improve developer workflows. His background includes founding a hosted services startup and designing IPv6-enabled data centers, reflecting both entrepreneurial and systems-architecture chops. Comfortable across languages and roles, he pairs pragmatic engineering with mentoring and cross-cultural collaboration in multilingual teams.
14 years of coding experience
6 years of employment as a software developer
M.Sc., Computer Science, M.Sc., Computer Science at The University of FreiburgComputer Science, Computer Science at Heidelberg University
English, German, Japanese
Stackoverflow
444reputation
14kreached
7answers
0questions
Github Skills (41)
markdown10
sandbox10
multiplatform10
scripting10
technical-writing10
linux10
process-management10
bash10
cross-platform10
cicd10
api-documentation10
release-management10
automation10
script10
go10
Programming languages (21)
Github contributions (5)
bazelbuild/bazelisk
Sep 2018 - Aug 2022
A user-friendly launcher for Bazel.
Role in this project:
Automation Engineer / Build & Release Engineer
Automation Engineer / Build & Release EngineerContributions:17 releases, 50 reviews, 87 commits in 3 years 11 months
Contributions summary:Philipp primarily contributed to automating the build and release process for the Bazelisk project. Their work included implementing the Go version of Bazelisk and adding a build script to create release binaries. The user also focused on integrating testing and CI/CD configurations using shell scripts and correcting existing build issues. They also added support for building for different platforms and architectures, including ARM releases.
bazel
bazelbuild/bazel
Feb 2015 - Feb 2022
a fast, scalable, multi-language and extensible build system
Role in this project:Back-end & DevOps Engineer / Automation Engineer
Back-end & DevOps Engineer / Automation EngineerContributions:1 release, 103 reviews, 705 commits in 7 years 1 month
Contributions summary:Philipp contributed to the Bazel build system by modifying and improving the process-wrapper tool and making enhancements related to sandboxing and persistent workers. The contributions involved addressing issues related to Docker container execution, file system interactions, and ensuring correct behavior of test execution with features such as timeout and automatic retry. The user also addressed problems with the project's installation and compilation scripts.
build-systembazelcorrectscalablemulti-language
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