Peter Marx, the top tech official for L.A. Mayor Eric Garcetti, is departing City Hall. In an internal email obtained by Variety, Marx said he is leaving for a job at General Electric.

Marx was hired in 2014 as part of Garcetti’s effort to establish closer ties to Silicon Beach. He was recruited from Qualcomm Labs and his background included stints as V.P. of emerging technologies at Universal Studios, CTO of Vivendi-Universal Games and vice president of Mattel’s Technology and Digital Studio.

At City Hall, Marx worked with AT&T and Google Fiber to bring their super-fast data services to Los Angeles, a project that is still underway. He also sought ways to improve the city’s dated technology systems, including establishing open data platforms that could allow the public to tackle civic issues. He was also involved in city-sponsored hackathons and acted as an ambassador and cheerleader for the city’s technology industry.

Garcetti was elected with strong support from L.A.’s tech industry, and made attracting and retaining tech jobs one of his key themes in office. Once concentrated around Santa Monica and Venice, the L.A. tech industry has expanded in recent years to lofts in downtown L.A. and the industrial center of Playa Vista.

In his email, Marx said his last day at City Hall would be Friday. Garcetti’s office has not yet commented on a potential replacement.