Steve Davis
Chief Investment Officer

SCERS CIO Steve Davis headshot

Steve Davis has served as the Chief Investment Officer at SCERS since October 2016 and is responsible for the oversight and implementation of SCERS’ investment program.  


Stephen Lau
General Counsel

SCERS General Counsel Stephen Lau headshot

Stephen Lau is the General Counsel of SCERS. Before joining SCERS in 2019, Stephen was Assistant General Counsel of the California Department of Business Oversight, by appointment of Governor Brown. 


Mario Sierras
Chief Benefits Officer

SCERS Chief Benefits Officer Mario Sierras headshot

Mario Sierras is the Chief Benefits Officer of SCERS and oversees the administration of benefits and related member services.

Mario joined SCERS in 2017 as a Retirement Services Manager bringing with him 17 years of diversified financial services experience from both the private and public sectors.  Prior to SCERS, he worked at the State Treasurer’s Office administering California’s 529 College Savings Plan with the ScholarShare Investment Board.


Jim Donohue
Deputy Chief Investment Officer

Deputy CIO Jim Donohue headshot

Jim Donohue joined SCERS as Deputy Chief Investment Officer in 2019 and is responsible for investment policies and strategy, supporting development of asset allocation and asset class structures, risk management framework, and oversight and selection of investment managers and service providers.


Debbie Chan, CPA, CGMA
Senior Accounting Manager

Sr Accounting Manager Debbie Chan headshot

Debbie Chan joined SCERS as Senior Accounting Manager in September 2018. She brings to her role more than 25 years of experience in accounting and financial reporting. Debbie is responsible for managing SCERS’ financial processes, including budgeting, accounting, cash management, financial planning and analysis, and financial reporting.