Ulrik Falklöf
Senior Software Engineer at Ericsson
Linköping, Östergötland County, Sweden
Summary
🤩
Rockstar🎓
Top SchoolUlrik Falklöf is a Senior Software Engineer based in Linköping, Sweden, with roughly 6 years of formal experience and a long consultancy background stretching back to the early 2000s that reflects deep, hands-on engineering across telecom and embedded systems. At Ericsson and previous consultancies he has delivered robust backend and systems-level solutions, with a practical focus on performance, correctness and maintainability. He is an active open-source contributor to high-profile build infrastructure projects such as Bazel and bazel-remote, where he improved remote cache behavior, data integrity checks and added Prometheus metrics to make cache performance observable. That combination of production-grade systems work and tooling contributions shows a knack for diagnosing subtle correctness and scalability issues and turning them into measurable improvements. Colleagues would describe him as a pragmatic engineer who pairs careful implementation with attention to operational metrics.
6 years of coding experience
12 years of employment as a software developer
Linköping University
Github Skills (18)
caching10
build-system10
java10
javas10
build210
go10
prometheus10
performance-optimization10
bazel10
build-tools10
testing9
web-cache9
scalable9
continuous-integration8
docker-container7
Programming languages (2)
Github contributions (5)
buchgr/bazel-remote
Apr 2020 - Apr 2022
A remote cache for Bazel
Role in this project:
Backend Engineer
Backend EngineerContributions:31 reviews, 6 commits, 10 PRs in 1 year 11 months
Contributions summary:Ulrik focused on improving the disk cache implementation for the Bazel remote cache. They addressed inconsistencies in handling empty files, adding size parameters to cache functions and checks to ensure data integrity. Furthermore, they added Prometheus metrics for monitoring disk cache size, eviction rates, and other performance indicators. They also introduced context parameters to the `Put` function and fixed metrics related to `FindMissingCasBlobs`.
gomabazel-rulesbazelcachingdocker-container
bazelbuild/bazel
Sep 2021 - Nov 2022
a fast, scalable, multi-language and extensible build system
Role in this project:Backend Developer
Backend DeveloperContributions:21 reviews, 4 commits, 5 PRs in 1 year 2 months
Contributions summary:Ulrik primarily focused on improving the Bazel build system's core functionality and performance. They implemented changes to handle transitions in build settings more efficiently, reducing potential scalability issues. Several commits addressed performance bottlenecks in the remote cache, by removing and optimizing its deduplication logic. Furthermore, the user fixed an issue with the hermetic sandbox related to handling certain artifact types, ensuring correct behavior.
scalablecorrectbazelmulti-languagebuild-system
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