In January 2026, Sosek focused on enhancing observability documentation for the Expensify/App repository, specifically clarifying how the emailDomainFilter operates within telemetry processing. By updating the contributing guides and streamlining OBSERVABILITY.md, Sosek aimed to reduce ambiguity for developers and align documentation with current telemetry practices. The work centered on technical writing and documentation skills, utilizing Markdown to ensure clarity and consistency across the repository. While the contribution was limited to a single feature update over one month, the changes improved onboarding and contributor guidance, addressing documentation gaps rather than code-level bugs or features, and providing moderate depth in technical communication.