Mark O'Brien

Mark O'Brien is a Senior Accountant at Validity Inc. since August 2022, with prior experience as a Staff Accountant at Zerto and Cambridge Associates. At Zerto, Mark managed accounts payable functions and successfully implemented the Tipalti AP software while training colleagues. Mark's role at Cambridge Associates involved managing the corporate American Express program and preparing month-end journal entries. Earlier experience includes positions as an Accounting Administrator, Department Supervisor at City Sports, and an Accounting/Finance Intern at Northeast Investment Management, Inc. Mark began an academic journey at Suffolk University, earning a Bachelor of Business Administration in Accounting in 2013.