| Amadeus FiRe AG | DE-59 Unna | ||
| Beumer Maschinenfabrik GmbH & Co. KG | DE-59 Beckum | ||
| Ferber-Software GmbH | DE-59 Lippstadt | ||
| Beumer Group GmbH & Co. KG | DE-59 Beckum | ||
| Ferber-Software GmbH | DE-59 Lippstadt | ||
| Ferber-Software GmbH | DE-59 Lippstadt | ||
| Ferber-Software GmbH | DE-59 Lippstadt | ||
| Hays AG | Nordrhein-Westfalen (PLZ 50, 57, 33, 51, 4, 59, 32, 53, 58, 52) | ||
| CALLIDUS executive GmbH | Nordrhein-Westfalen (PLZ 50, 57, 33, 51, 4, 59, 32, 53, 58, 52) | ||
| Amadeus FiRe AG | DE-59 Unna | ||
| ifp Personalberatung Managementdiagnostik | Nordrhein-Westfalen (PLZ 50, 57, 33, 51, 4, 59, 32, 53, 58, 52) | ||
| über Experteer | DE-59 Lippstadt | ||