Łukasz Milewski
Software Engineer at Google
Mountain View, California, United States
Summary
🤩
Rockstar🎓
Top SchoolŁukasz Milewski is a software engineer with 16 years’ experience building large-scale server infrastructure and performance tooling, currently driving context-aware cost and optimization tooling at Google in Mountain View. He has deep expertise in Go, having both optimized Go runtimes and contributed to high-profile open-source projects like golang/protobuf where he improved API ergonomics and uncovered map unmarshaling lock contention through benchmarks. His work helps major Google products with profiling, load balancing, cost analysis, outage triage, and design/finance decisions—turning low-level performance insights into business-impacting recommendations. Comfortable across systems, libraries, and product-facing infrastructure, he pairs rigorous engineering with an ability to make complex resource and performance tradeoffs visible and actionable.
15 years of coding experience
11 years of employment as a software developer
III LO GdańskMSc, Computer Science, MSc, Computer Science at University of Wroclaw
Stackoverflow
1,935reputation
223kreached
40answers
1question
Github Skills (20)
protocol-buffers10
code-generation10
go10
golang10
protobuffer10
protobuf10
testing9
reflections8
benchmarking8
benchmark8
reflection8
boost-python6
timestamp6
yield6
linux6
Programming languages (7)
Github contributions (5)
golang/protobuf
Nov 2016 - Nov 2016
Go support for Google's protocol buffers
Role in this project:
Back-end Developer
Back-end DeveloperContributions:6 commits, 2 PRs, 6 pushes in 12 days
Contributions summary:Łukasz contributed to the Go protobuf library, primarily focusing on code generation and API improvements. They implemented the generation of "Get" methods for proto3 fields, enhancing API consistency and reducing user confusion. The user also updated generated `pb.go` files and introduced a benchmark demonstrating lock contention issues when unmarshaling maps. These contributions showcase a strong understanding of the protobuf library's internals and performance characteristics.
golangprotocol-buffersbuffersprotobufgo
LMMilewski/models3d
Mar 2011 - Jul 2011
Contributions:53 commits in 3 months
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