Billtrust has announced that Aimie Killeen has joined the company as Chief Legal Officer. Reporting to Founder and CEO Flint Lane, Killeen will lead the company's legal, compliance and regulatory functions. An experienced General Counsel with a demonstrated history of working in complex global businesses in the financial services, information technology and services industries, Killeen joins Billtrust amid its global expansion in Europe having recently acquired Belgium-based iController.

Killeen was most recently Executive Vice President, General Counsel and Company Secretary for Cardtronics plc. She previously served as Global General Counsel for Directcash Payments Inc.