Vladimir Fetisov focused on improving error detection and emulation handling in the DataDog/orchestrion repository during March 2025. He addressed a bug where Rosetta was not reliably detected by enhancing the error parsing logic to recognize 'executable file not found' messages, thereby strengthening command presence checks. Additionally, Vladimir expanded the emulation detection mechanism on amd64 Linux systems to include both 'qemu' and 'rosetta', ensuring accurate targeting of emulated commands. Working primarily in Go, he applied his skills in bug fixing, error handling, and system programming to deliver a robust solution that improved the reliability of orchestration workflows.