Custom sort order according to cell value

Currently I sort my sheet via this function

var ss = SpreadsheetApp.getActiveSpreadsheet();
var sheet = ss.getSheetByName(a);
var dataRange = sheet.getDataRange();
dataRange.sort([
  {column: role, ascending: true},
  {column: cases, ascending: false}
]);

This sorts the by role first in alphabetical order. Is it possible to customise this sort ? For example, ideally the sort is by role level and not aplhabetical

Eg. if the roles are [intern, junior, senior, lead, manager] can the sheet be sorted in that order ?

Here is my sample data. My table doesn't show it but column a is a drop down selection

My Script:

function myFunction() {
  var ss = SpreadsheetApp.getActive();
  var sh = ss.getSheetByName("Sheet0");
  var rg = sh.getRange(2,1,sh.getLastRow() - 1, sh.getLastColumn());
  var vs = rg.getValues();
  var list = ['intern', 'junior', 'senior', 'lead', 'manager'];
  vs.sort((a,b) =>{
    return list.indexOf(a[0]) - list.indexOf(b[0]);//switch a and b to sort descending
  } )
  Logger.log(JSON.stringify(vs).replace(/],/g,'],\n'))
  //rg.setValues(vs);
}

Here's the logger output:

[["intern","B2","C2","D2","E2"],
["intern","B7","C7","D7","E7"],
["intern","B12","C12","D12","E12"],
["intern","B17","C17","D17","E17"],
["intern","B22","C22","D22","E22"],
["junior","B3","C3","D3","E3"],
["junior","B8","C8","D8","E8"],
["junior","B13","C13","D13","E13"],
["junior","B18","C18","D18","E18"],
["junior","B23","C23","D23","E23"],
["senior","B4","C4","D4","E4"],
["senior","B9","C9","D9","E9"],
["senior","B14","C14","D14","E14"],
["senior","B19","C19","D19","E19"],
["senior","B24","C24","D24","E24"],
["lead","B5","C5","D5","E5"],
["lead","B10","C10","D10","E10"],
["lead","B15","C15","D15","E15"],
["lead","B20","C20","D20","E20"],
["lead","B25","C25","D25","E25"],
["manager","B6","C6","D6","E6"],
["manager","B11","C11","D11","E11"],
["manager","B16","C16","D16","E16"],
["manager","B21","C21","D21","E21"],
["manager","B26","C26","D26","E26"]]

Just learn how to use the Javascript Array.sort() with the compare function. Use your favorite javascript reference.

Regarding your question about sorting multiple columns here is a snippet of a sorting routine that sorts bible verses in biblical canonical order. As you can see it begins to get a little more complicated. But the idea is still the same.

vs.sort((a, b) => {
    let tA = [a[1], a[2]];
    let tB = [b[1], b[2]];
    let ia = vers.indexOf(a[3].toString());
    let ib = vers.indexOf(b[3].toString());
    if (~ia && ~ib) {
      let vA = (vers.indexOf(a[3]) * 1000);
      vA += (a[3] == b[3]) ? (booknames.indexOf(a[0]) * 100) : 0;
      vA += (a[0] == b[0]) ? (Number(tA[0]) * 10) : 0;
      vA += (tA[0] == tB[0]) ? (Number(tA[1]) * 1) : 0;
      let vB = (vers.indexOf(b[3]) * 1000)
      vB += (a[3] == b[3]) ? (booknames.indexOf(b[0]) * 100) : 0;
      vB += (a[0] == b[0]) ? (Number(tB[0]) * 10) : 0;
      vB += tA[0] == tB[0] ? (Number(tB[1]) * 1) : 0;
      Logger.log("vA: %s vB: %s VersionA: %s versionB: %s NameA: %s NameB: %s verseA: %s:%s verseB: %s:%s", vA, vB, a[3], b[3], a[0], b[0], tA[0], tA[1], tB[0], tB[1])
      return vA - vB;
    }
  })