Costello brings more than two decades of leadership experience across the Department of Homeland Security (DHS), where he played a key role in advancing enterprise IT modernization and cybersecurity operations supporting national security and critical infrastructure missions.
In his new role at Merlin Group, Costello will lead the company’s digital strategy, technology architecture, and enterprise AI initiatives. He will also work with Merlin’s affiliates and portfolio companies to strengthen their digital capabilities and support the delivery of mission technology to government and critical infrastructure organizations.
Costello most recently served as Chief Information Officer and head of Mission Engineering at CISA, where he was responsible for the agency’s enterprise IT strategy, infrastructure, and digital services supporting the nation’s civilian cyber defense mission. During his tenure, he helped advance CISA’s technology modernization efforts, strengthen enterprise security, and improve operational capabilities across the agency.
Prior to serving as CIO, Costello held several senior technology leadership roles within the Department of Homeland Security, contributing to major enterprise IT and cybersecurity initiatives supporting DHS’s mission to safeguard the nation’s critical infrastructure and federal networks.
Costello said he looks forward to helping Merlin strengthen its digital foundation while supporting the company’s mission to connect technology companies with government customers.
Costello’s appointment comes as Merlin Group continues to expand its role connecting technology companies with government and regulated industry markets through its affiliates, including Merlin Ventures, Constellation GovCloud, and Merlin Cyber.
