Paytronix Systems  Inc received a $65 million growth equity investment from Great Hill Partners  a Boston-based private equity firm focused on investments in high-growth mid-market companies Founded in 2001 by Andrew Robbins and Matt d’Arbeloff  Paytronix has become a force in the CXM industry  serving more than 330 customers and 16 000 store locations generating $18 billion in guest spend