CodeSignal

Provides a platform for coding assessments and training.

HQ: San Francisco, USA
Founded: 2015
Focus: Technical assessment
Founders: Tigran Sloyan, Aram Shatakhtsyan
Funding: Series C, $50M
Sources: https://codesignal.com/about/, https://techcrunch.com/2021/06/15/codesignal-raises-50m/