Over a two-month period, this developer contributed to the wireapp/wire-avs and wireapp/kalium repositories, focusing on Linux build stability, developer tooling, and network quality features. They addressed a critical build failure in wire-avs by tuning C++ compiler flags, ensuring reliable CI pipelines across Ubuntu environments. In wireapp/kalium, they enhanced the Linux bootstrap process and introduced a CLI option for injecting custom SFT URLs into call configurations, improving test isolation and flexibility. Their work leveraged C, C++, and scripting skills, and included implementing unit tests and reconfigurable network quality handlers, resulting in more robust, maintainable, and testable codebases.