Jack Pierse, co-founder of Dublin-based tech unicorn Wayflyer, invested in Y Combinator graduate Arc’s $20m Series A. The co-founder of one of Ireland’s handful of tech unicorns, Wayflyer, has invested in an up-and-coming financial software start-up called Arc. Wayflyer’s Jack Pierse was one of several investors who joined Arc’s $20m Series A funding round. The round was led by Left Lane Capital, which is also an investor in Wayflyer. Other investors included the founders of Plaid, Column, Chargebee, Vouch and Jeeves.