St. Louis County’s new auditor started Monday after the county’s former auditor was fired in September.

Toni Jackson, whose first day with the county was Nov. 8, took over the role from Mark Tucker, who was fired in September after the County Council voted to terminate him. Tucker was hired as auditor in 2017.

A 2020 state audit by Auditor Nicole Galloway highlighted several problems with Tucker and his auditing department, from the auditor’s lack of relevant credentials to the absence of any industry-recognized quality audits. The county earned a poor rating from Galloway but despite the finding, no changes were implemented by Tucker to improve the department.

The county began interviewing candidates in October and selected Jackson, who is a certified public account who has been running her own audit and tax advisory services company in Florissant.

Jackson was chosen out of the five candidates who applied for the vacant position. In addition to her work as a CPA, she has also worked with the Office of Internal Governance at Boeing and brings risk management, policy, internal control and regulatory compliance expertise to the role.