Aleksander Korzynski

Co-authored an online book entitled "Get Started on Linux by End of Tonight – Without Breaking Your Box." Modified existing Bash, Perl, and XSLT code to have DocBook generate special feedback links at the end of every paragraph so that readers can easily provide feedback. Converted the book into an online course based on WordPress and LearnDash.

Developed a downstream CI/CD system for OpenStack, a project having as many as 50 changes per day produced by tens of thousands of open-source developers. To maintain temporary patches on top of OpenStack without forking from the open-source community, I led the development of special extensions to Git. The extensions allow us to submit our patch to the community, incorporate the feedback from the community, and, once the patch is accepted, remove the temporary patch from the in-house version. We have designed a new Git operation the combines the advantages of Git merges and rebases without the disadvantages. Our extensions allow us to clearly distinguish our temporary patches from the rest of commits without breaking backward compatibility.

An implementation of checkpoint and recovery in the OpenSSI kernel-level clustering platform for Linux. Analyzed the problem, reverse-engineered the undocumented C source code of OpenSSI, and implemented selected elements of the mechanism. I published a paper related to the project at the student forum of an IEEE/IFIP conference in the USA. Received an award for the paper from the IEEE-CS Technical Committee on Fault-tolerant Computing. I completed this work for my master's thesis.

This was the first distribution of the Minix operating system that could be booted from a CD. The idea for the project originated from an academic professor at the Warsaw University of Technology, where I was a student. The work included programming in C to implement the new functionality in the Minix kernel. The distribution had tens of thousands of users worldwide and was mirrored on the website of one of the co-authors of the famous operating systems book, Albert S. Woodhull.

Implemented a new feature in the most popular MP3 encoder in the world. The feature ensures that different songs are played at the same perceived volume so that the listener does not have to reach the volume knob every time a different song is played. My work involved C programming to integrate the ReplayGain standard into the LAME MP3 encoder, which has millions of users.