The Sami and Vikings were contemporay in Scandinavia.

According to Stephen Mitchell (Witchcraft and Magic in the Nordic Middleages) Viking belief in witches and spirits were influenced by Sami shamanism.

According to Snorri Sturluson, Tore Hund had received a coat from the Sami which through Sami witchcraft could not be pierced by iron.

hi! there have a been a few posts on this topic, so take a browse through these...

• What was the relationship between the Sami and the Vikings like? - link also provided by /u/intangible-tangerine elsewhere in this thread

• What was the relationship bettween the vikings and the samii people?

• What was the relationship between the Sami people and the so called "Vikings"? - linked in the linked post

• Did the Sami (also known as Laplanders) ever war with the Vikings, if so why?

• Is there any historical evidence of the Vikings coming into contact with the Sami people? Were there any peaceful or violent engagements?

• What is the relationship between the pre-Christian Norse religion and the religion/shamanic practices of the Sami people?

All I have to say is from Philip Parkers "The Northmen's Fury: A History of the Viking World"

He doesn't go too deeply into their relationship. He does mention that there was trade between the two groups, the Saami supplying furs, though we are not sure what they received in return. After the introduction of the Borgarthing law the interactions were reduced as the law attempted to prevent Christians from interacting with the Saami. Overall there were more peaceful interactions than aggressive and the Saami seem to be linked with shamanistic/witchcraft type characters.