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Editor’s note: Story was been updated Feb. 26 to include more details.

A key player in the Department of Homeland Security is leaving government, FedScoop has learned.

According to a DHS official who spoke to FedScoop on background, Keith Trippie, executive director for the Enterprise System Development Office within DHS’ Office of the Chief Information Officer, handed in his resignation yesterday.

Trippie is leaving DHS to pursue an “entrepreneurial venture,” according to an email Chief Information Officer Luke McCormack wrote to DHS staff and obtained by FedScoop on Feb. 26. Trippie will be doing consulting in the cybersecurity arena, and forming his own company.

Trippie’s last day at DHS will be March 7. Greg Capella will be acting ESDO director and Rob Palmer takes over as acting deputy director.

In the email to staff, McCormack said he “reluctantly” accepted Trippie’s resignation on Monday.

Trippie has been with DHS since its inception, starting with the Transportation Security Administration’s Maritime and Land Division. He has worn several hats at DHS, including as acting executive director for the Enterprise Business Management Office, and as chair for the DHS Applications and Services Council. He has also participated in other government and private sector councils and working groups.

In his role as executive director of ESDO, Trippie was responsible for managing the department’s enterprise application service offerings and cloud strategy.

McCormack expressed his gratitude toward Trippie’s service and leadership, and the email subject read, “It is with heavy heart that we announce Keith Trippie’s departure.”

Trippie is well-known in the federal IT community for his avid participation and engagement in panels and events. He has earned several accolades for his leadership, most recently FedScoop 50’s Federal Leadership Award.

As a champion for federal mobility, Trippie last year talked with FedScoopTV about this widely adopted technology: