Erik Bjäreholt
Founder, Lead Developer at ActivityWatch
Lund, Sweden
Summary
🤩
Rockstar🎓
Top SchoolErik Bjäreholt is a founder and seasoned full‑stack engineer with 13 years of experience building privacy‑focused, open‑source tools and autonomous agent systems from Lund, Sweden. He created and maintains ActivityWatch, a cross‑platform automated time tracker, and is the creator of gptme — an early local‑first agent CLI, app, and managed service that explores persistent autonomous builders (e.g., Raising Bob). Comfortable across Python, Rust, JS/TS, Kotlin and DevOps, he has production experience shipping developer tooling and improving complex build/test pipelines. As first hire at Lovable he worked on software that generates software, and his background includes applied research using EEG for activity labeling and scalable contributions to well‑known projects like the Uniswap Python client. A scientist at heart and engineer by training, he combines rigorous experimentation with product instincts and an unusual blend of infrastructure, academic, and startup grit.
13 years of coding experience
5 years of employment as a software developer
Computer Science, Computer Science at CourseraMaster of Science (M.Sc.), Computer Science, Master of Science (M.Sc.), Computer Science at The Faculty of Engineering at Lund UniversityComputer Science, Computer Science at UdacityElementary School, Elementary School at TunaskolanHigh School, Technology, High School, Technology at Polhemskolan
Swedish, English, German
Stackoverflow
14,983reputation
2.1mreached
26answers
4questions
math
top-5%
floating-point
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python
top-1%
numpy
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subprocess
top-5%
Github Skills (39)
python10
pyinstaller10
git-repository10
bash10
cicd10
scala10
mat10
web3js10
build-automation10
blockchain10
github-repos10
documentation10
subprocess9
numpy9
math9
Programming languages (28)
Github contributions (5)
ActivityWatch/activitywatch
Apr 2016 - Jan 2023
The best free and open-source automated time tracker. Cross-platform, extensible, privacy-focused.
Role in this project:
DevOps Engineer
DevOps EngineerContributions:62 releases, 26 reviews, 812 commits in 6 years 10 months
Contributions summary:Erik primarily contributed to the project by updating the installation scripts and build processes. They modified the install script to allow for user-level installations and changed the flag used. They also improved the build script to handle multiple PyInstaller specifications, and introduced a zip-file creation step for packaging the executables, and setting up a virtual environment. The user also added improvements to the integration tests.
trackertime-trackingdashboardafkprivacy-focused
uniswap-python/uniswap-python
Nov 2019 - Jan 2023
🦄 The unofficial Python client for the Uniswap exchange.
Role in this project:Back-end Developer
Back-end DeveloperContributions:11 releases, 31 reviews, 234 commits in 3 years 2 months
Contributions summary:Erik primarily focused on fixing bugs and improving the functionality of the Uniswap Python client. They fixed issues related to outdated contract APIs and improved network detection. The user also made updates to the underlying code, addressing code style with "black" formatting and improved transaction handling, especially concerning nonces. Their work demonstrates a deep understanding of the Uniswap protocol and the Python environment.
fixprotocolexchangepythoncoinbaseethereum
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