David Sweeney on Friday was named Boston’s next chief financial officer (CFO) and collector-treasurer.

Sweeney, who has nearly a decade of experience working in government finance, most recently managed the financial operations of the Massachusetts State Lottery Commission. He will replace Meredith Weenick, who has been CFO of Boston since 2011.

"I’m pleased to welcome David Sweeney as Boston’s new chief financial officer," Boston Mayor Martin Walsh said in a statement. "I’m confident he will continue the city’s longstanding practices of fiscal prudence to ensure that Boston’s overall financial health remains strong. I’m also grateful for Meredith Weenick’s service to the city of Boston, particularly during the transition period, and for her leadership in our first budget of the Walsh Administration."

Sweeney will serve as cabinet chief of finance and budget with oversight of the Assessing, Auditing, Budget, Purchasing, Treasury and Registry Departments. His responsibilities will include debt and investment management, financial reporting and the administration of enterprise-wide financial systems. The collector-treasurer is the custodian of more than 300 city trust funds and is an ex-officio member of the Massachusetts Convention Center Authority Board. 

Sweeney has served as the CFO and assistant executive director of the Massachusetts State Lottery Commission since 2011. During that time, the organization experienced its two most successful years, generating $4.85 billion in sales in 2013 and returning $984 million in profit in 2012. Beginning in 2005, Sweeney worked for the House Committee on Ways and Means, serving as a budget analyst, focused on public safety issues. Within two years, he was elevated to budget director. He was later named chief fiscal policy advisor to the Speaker of the House.   

"I’m honored to join Mayor Walsh’s team in this role," Sweeney said in a statement. "Our shared vision for the city’s fiscal welfare will mean great things for Boston’s long-term growth and stability."