Zahar focused on improving developer experience and package reliability across open source projects. In the lite-xl/lite-xl repository, he addressed documentation issues by fixing a broken README link to the build instructions, ensuring contributors could reliably access setup guidance. His work emphasized documentation hygiene and reduced onboarding friction using Markdown and Shell scripting. Later, in the SerenityOS/serenity repository, Zahar updated the Bash package checksum in the Ports directory, aligning metadata with the upstream tarball to enhance build reproducibility and supply-chain security. His contributions centered on build systems, package management, and documentation, providing targeted, quality improvements rather than broad feature development.