During November 2025, Efcking focused on maintainability and clarity across three repositories. In TheThingsNetwork/lorawan-stack, they refactored Go code to remove redundant variable declarations in for loops, streamlining logic and improving long-term readability. For ChainSafe/forest, Efcking enhanced project documentation by correcting typographical errors and clarifying instructions, which reduced onboarding friction for new contributors. In KyberNetwork/kyberswap-dex-lib, they modernized liquidity source type handling by replacing interface{} with any, leveraging Go generics for improved type safety. Efcking’s work demonstrated a strong grasp of Go, Rust, and shell scripting, emphasizing code optimization, documentation, and software refactoring to reduce technical debt.