Job portals: Market and opinion research
IEA: https://www.iea.nl/about/opportunities
KANTAR: https://www.kantar.com/careers
infas: https://www.infas.de/ueber-infas/jobs/#ic472
SKOPOS: https://www.skopos.de/ueber-uns/jobs.html
Nielsen: https://www.nielsen.com/de/careers/careers/
Ipsos: https://www.ipsos.com/de-at/chancen-bei-ipsos
Psyma: https://www.psyma.com/de/karriere/stellenangebote/