Over a three-month period, contributed to security, documentation, and system administration across tweag/nixpkgs and tasmota/docs. In tweag/nixpkgs, implemented a systemd ProtectProc configuration for the Excalidraw Backend, reducing warnings and improving backend service security using Nix and Linux system administration skills. For tasmota/docs, delivered structured, step-by-step documentation for shutter calibration and updated TLS certificate guidance to include ECDSA alongside RSA, clarifying requirements for users. Work emphasized traceable, audit-friendly commits and focused on aligning documentation with user workflows. Demonstrated expertise in DevOps, certificate management, and Markdown, prioritizing security, reliability, and clear user guidance in all deliverables.