Initial CodeSignal. Then, 3 interviews (1 Pair Programming, 1 Behavioral, and 1 Technical). Very friendly people. Not hard, but did need to know some technologies beforehand to do well. Seems like a fun company.
I applied online. I interviewed at Klaviyo (Boston, MA)
Interview
technical coding 2 rounds and 1 behavioral to make up the final round. failed one of the technical rounds by using a hint, got all questions right but other candidates were more technically strong than me