Pranjul Kalsi refactored error handling across the SigNoz/signoz repository, unifying error creation and propagation by replacing direct uses of fmt.Errorf with the project’s custom signoz/pkg/errors package. This work enforced consistent error classification and improved maintainability, aligning the codebase with updated golangci-lint rules to prevent improper error construction. By standardizing error management, Pranjul enhanced observability and incident response throughout the project. The refactor demonstrated advanced skills in Go, code refactoring, and linting, laying a foundation for more reliable debugging and onboarding. The changes addressed long-term reliability by ensuring project-wide consistency in error handling practices.