Gareth Lambe is sitting in a window seat of a hotel in Dublin 2 when we meet. He is one of Ireland’s most experienced big-tech executives as head of Meta Ireland for nine years but also embedded in the hardscrabble of domestic entrepreneurship, after spending eight years working for Michael Dwyer in Pigsback.com leading the online deals and discounts company in Ireland, Canada and Britain.  Lambe has just finished taking a year off from working and taken on a new role as a strategic advisor to Johnson Hana, the rapidly growing alternative legal services provider.  He also became an investor…