LEADERSHIP
Executive Management
Andrew Merriman
Andrew (Drew) Merriman is Castellum's chief operating officer (COO). Mr. Merriman is responsible for the operational performance of the company's four subsidiaries and associated mission sectors. In addition, he leads the internal IT Services organization. Prior to serving as COO, Mr. Merriman was the Deputy COO and VP of Technology and Deployment at Castellum.
Before joining Castellum Mr. Merriman was the founder and CEO of Merrison Technologies, which was acquired by Castellum in August 2021. He built a strong business focused on the Federal Civilian market with subject matter expertise in eGov travel, data analytics, systems integration, and systems administration. Merrison had contracts with GSA, Smithsonian Institution, NSF, and DOJ. Under Mr. Merriman’s leadership Merrison experienced explosive growth joining the Inc. 5000 fastest growing companies list in 2018 with 176% revenue growth over a three-year period.
Mr. Merriman spent 11 years working at Northrop Grumman (NG) working his way up from Software Development manager to Technical Director. In his time at NG he managed development, test, CM, requirements, operations, and engineering teams. He also oversaw and managed operations for three data centers. Mr. Merriman has a bachelor's degree in information systems and is a Certified CMMC Professional (CCP) with the Cyber AB.