hotfixer
A hotfixer is a term used to describe a person or software that applies hotfixes to computer systems or software applications. A hotfix is a small, often urgent, patch or update designed to address a specific critical bug or security vulnerability in existing software. These fixes are typically released outside of the regular software update cycle because the issue they resolve is severe enough to warrant immediate attention.
In the context of software development, a hotfixer might be a developer or a dedicated team responsible
When referring to software, a hotfixer could be an automated tool or script that applies the hotfix