Worked on refactoring error handling in the srl-labs/containerlab repository, migrating from a third-party package to Go’s standard library to streamline dependency management and align with Go 1.13+ conventions. Focused on backend development, the update standardized error patterns throughout the codebase, reducing reliance on external libraries and improving long-term maintainability. The changes were internal, introducing no user-facing API modifications but enhancing code stability and simplifying future upgrades. Demonstrated proficiency in Go by carefully verifying error handling consistency and applying disciplined refactor strategies. This work addressed technical debt and mitigated dependency-related risks, contributing to a more robust backend architecture.