PowerShell Start-Job Working Directory

A possible solution would be to create a "kicker-script":

Start-Job -filepath .\emacs.ps1 -ArgumentList $workingdir, "RandomFile.txt"

Your script would look like this:

Set-Location $args[0]
emacs $args[1]

Hope this helps.

There is nice solution from comments section of some dude's post. Commenter suggests to use Init parameter to setup working directory of script block.

function start-jobhere([scriptblock]$block) {
    Start-Job -Init ([ScriptBlock]::Create("Set-Location '$pwd'")) -Script $block
}