What do you want to know? They are an aircraft management company that's part of the Berkshire Hathoway empire...
Each aircraft that's managed has it's own crew and negotiated salaries (per crewmember). There's no affiliation with NJA or NJA (totally separate operations).
From what I hear, a pretty decent job if you can land it. Most of the EJM crews I know can commute from home (pretty much if it has airline service you're good to go). Schedules might be different from the typical "7/7" depending on the arrangement.