Park City Manager Matt Dias will leave the municipal government in September after serving in the top staff post at the Marsac Building for nearly six years.

A City Hall release late Wednesday afternoon indicated he will enter the private sector in an unspecified role. A precise date for the departure was not announced. Dias started his career at the Marsac Building in 2013 as the assistant city manager. He was promoted to city manager in late 2019 to fill the vacancy left after the departure of his predecessor, Diane Foster. His background included time in municipal government in Massachusetts, as a congressional aide, and at the federal Bureau of Labor Statistics.

Dias became the city manager just months before the start of the coronavirus pandemic, and his first several years in the office were largely defined by City Hall’s response to the spread of the disease. Although officials at the federal, state and county levels led the public health efforts, the municipal government held a crucial role in stabilizing the economy and then in nurturing the strong rebound from the first few months of the pandemic.

But there have been widespread questions about the progress made at City Hall in the time since the response to the pandemic. There have been worries about the municipal government’s management of the impacts of the resort industry, efforts to curb traffic and the timelines of city projects. The pace of municipal progress is one of the key issues in the City Hall election this year.

“Park City is home. I’ve raised two children here — one born in town — and I’m happy to report we get to stay in the community we love. I’m grateful for the people I’ve been privileged to work and grow with, and I’m incredibly proud of our accomplishments over the past decade. I remain committed to supporting the city through this transition to ensure key projects and initiatives stay on track,” Dias said in a statement released by City Hall.

The release announcing the departure lists a series of achievements during his tenure. They include open space acquisitions like Treasure and Bonanza Flat, the construction of the 3Kings Water Treatment Plant, a public-private partnership centered on the future of the Snow Park base at Deer Valley Resort and a separate public-private partnership involving the EngineHouse housing project.

“Most of all, I have been fortunate to work alongside talented and dedicated colleagues,” Dias said. “Our accomplishments reflect a shared sense of purpose, collaboration, and grit — from mayors and councilors to staff, residents and stakeholders. Park City’s future is bright, and I’m honored to have contributed to its path forward.”

Mayor Nann Worel also provided a statement through City Hall: “We will miss Matt dearly. Much of his work happens out of the public eye, often at all hours, yet its impact has been profound. He has guided Park City through some of our most complex challenges and greatest opportunities with remarkable steadiness — from the COVID-19 pandemic to difficult negotiations and key legislative victories. Most of all, we will miss his collaborative spirit, accessible nature, calm under pressure, and deep commitment to our community. We are excited for him as he begins his next chapter in the private sector and deeply grateful for his years of dedicated service to Park City.”

City Hall did not release details about the upcoming recruitment to fill the office. An interim city manager likely will be appointed during the process to select a permanent city manager.