WALLINGFORD — The school district’s new business manager, Dominic Barone, has public and private sector experience, having worked for another school district and a Hartford accounting firm. Barone, 52, started earlier this month, replacing interim manager Ed Arum, who is retiring. He previously worked in the Shelton school district as finance director for three years. Prior to that, he worked as a manager for Blum Shapiro, an accounting firm. Barone will be responsible for managing a roughly $100 million school budget. He managed a $71 million budget in Shelton. Barone said he plans to work with department heads and school leaders to make sure their needs are met while also watching the budget to “make sure we’re within our means.”His public and private sector experience separated him from other candidates, said Cindy Lavalette, assistant superintendent for personnel. The board unanimously voted to appoint Barone in February. He started July 1 and will earn $140,000 this year. At Blum Shapiro, Barone was part of a consulting group that worked with schools and towns to help them improve efficiency, including payroll and accounts payable. “I’ve worked with a lot of different school districts and towns, so I understand both sides,” said Barone, who lives in Avon. “Having worked in different communities you see things that work well and don’t work well and figure out the right solution.” Arum served one year as interim manager after longtime business manager Linda Winters retired last year. Barone said his transition has gone well so far, but added that there “is a lot more transitioning left to go.” “I’m excited to work with the group in Wallingford. It’s really an exciting place and the people have been great,” he said.