From the context in the blog, it is not communicated clearly who was assigned to rebuild the server and whether the senior dev communicated that he is working o

From the context in the blog, it is not communicated clearly who was assigned to rebuild the server and whether the senior dev communicated that he is working on it. The rule can be a morning stand-up or Jira note, saying that the work is assigned to this person. At the time, developers (probably) were not accustomed to have either.