Pete Tseronis, the Energy Department’s chief technology officer, is leaving government.

Energy chief information officer Michael Johnson announced in an email to staff that Tseronis would be leaving the department at the end of October.

“He has led several key efforts, including development of the DOE enterprise-wide Technology Roadmap, and most recently IM-50’s transition to a unified focus on enterprise architecture, systems engineering, and technology and innovation,” Johnson wrote in the email obtained by Federal News Radio. “On a personal note, I’m going to miss Pete’s passion and high energy approach. We will identify staff to serve in an acting capacity leading IM-50 as we get closer to Pete’s departure.”

Johnson said Tseronis would be pursuing “other opportunities in the private sector,” but didn’t say where he is planning on going.

Tseronis came to Energy in 2008 and has been in government for 24 years.

While at Energy, Tseronis quickly became an advocate for modernizing and innovating through the development of policies and deployment of cloud and mobile computing, improving cybersecurity, including access control and identity management, and creating a Cyber Architecture, Engineering, Technology, and Innovation strategic direction and vision.

From a governmentwide perspective, Tseronis led efforts around moving to Internet Protocol Version 6 (IPv6), the mobile strategy and its convergence with the cloud, and modernizing federal infrastructure efforts.

In addition to his time at Energy, Tseronis also worked at the Education Department and the Army.

Tseronis becomes the second key executive to leave Energy in the last few weeks. Rod Turk, Energy chief information security officer, returned to the Commerce Department in the same role.

A former government official said Tseronis and Turk’s decision to leave comes back to a major reorganization happening at Energy.

The source says Johnson is trying to put his own stamp on the department in the 18 months he has left at Energy. Johnson is a political appointee.

“He’s trying to create a more efficient organization,” the source said. “People resist change so with any change you tend to see a lot of negative chatter. I know some are not happy with how the CIO is pulling apart some of the duties and that makes some feel less effective in their roles.”

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