Olof Rensfelt
Senior Software Engineer at Google
Stockholm County, Sweden
Summary
🤩
Rockstar🎓
Top SchoolOlof Rensfelt is a senior software engineer based in Stockholm with a decade of experience building real-time communication, IoT platforms, and backend data analysis systems. He has contributed to high-performance time-series projects like TimescaleDB and the Time Series Benchmark Suite, combining database-focused backend engineering with DevOps and testing rigor. At Google since 2019 he has scaled services and tooling, drawing on earlier hands-on roles as CTO at a hardware-focused startup and as a core developer on IoT analytics platforms. His background spans embedded systems, machine learning for sensor data, and reproducible network testbeds from his academic research, giving him a rare blend of systems-level depth and pragmatic production experience. Notably, he moves between low-level database testing and cloud deployment work, demonstrating both meticulous test engineering and practical operational know-how.
10 years of coding experience
12 years of employment as a software developer
Master of Technology (M.Tech.), Informationsteknologi, Master of Technology (M.Tech.), Informationsteknologi at Uppsala University
Swedish, English
Github Skills (24)
benchmark10
postgresql10
admin10
cassandra10
testing10
time-series10
benchmarking10
bash10
database-administration10
bash-shell10
script10
sql10
sh10
shell10
influxdb10
Programming languages (5)
Github contributions (5)
timescale/timescaledb
Oct 2016 - Oct 2017
A time-series database for high-performance real-time analytics packaged as a Postgres extension
Role in this project:
Back-end & Database Engineer
Back-end & Database EngineerContributions:59 commits, 34 PRs, 15 pushes in 11 months
Contributions summary:Olof primarily contributed to implementing unit tests for database functionalities within the TimescaleDB project. Their work involved writing SQL unit tests, modifying shell scripts for test execution, and creating setup and cleanup scripts for the testing environment. The commits focused on testing functions, specifically related to data table construction and ensuring correct naming conventions, along with enhancements to the test framework itself. Further contributions are visible through the integration of unit tests from a separate backend project.
postgresql-extensionfinancial-analysiscomplex-queriestime-seriestsdb
timescale/tsbs
Sep 2016 - Mar 2017
Time Series Benchmark Suite, a tool for comparing and evaluating databases for time series data
Role in this project:Back-end & DevOps Engineer
Back-end & DevOps EngineerContributions:30 commits in 6 months
Contributions summary:Olof primarily contributed to the backend functionality of the time series benchmark suite. Their work included extending Cassandra query timeouts, adding and modifying scripts for data generation and query execution, and incorporating new query types for InfluxDB and Iobeam. The user also made changes related to Cassandra configuration and script enhancements for AWS experiments, demonstrating knowledge of deployment and database interaction.
comparingtime-series-databasebenchmarkingbenchmark-suitecassandra
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