Bis Dhar, CPA, Managing Director

Bis is a Managing Director and one of the nonprofit leaders in BDO’s Accounting Advisory & Outsourcing (AAO) group. As Managing Director, Bis specializes in the nonprofit industry (Associations, charitable, educational, religious organizations, social welfare organizations, charter schools, and foundations). He and his team provide outsourced accounting, financial, and advisory services. They provide support to the leadership team of nonprofit organizations, including helping with their strategic planning and execution. He draws on deep industry experience to become a trusted advisor to the executive team. He provides clear, simplified options, which inform client decisions in meeting current needs and achieving long-term goals.

Bis has over 35 years of Finance & Accounting experience, working with BDO since 2005. He serves as an outsourced CFO to several nonprofit clients in the Washington metro area and has provided audit, accounting, and other consulting services in the past. He has prior audit experience with PricewaterhouseCoopers.

Bis received his Bachelor of Commerce in Accounting and Finance from St. Xavier’s College in Calcutta, India and is a member of the Advisory Board for Accounting at Elon University in North Carolina.

Rob Williamson, CPA, MBA, Director

Rob supports BDO nonprofit clients in the metro NY and MidAtlantic regions with high-level strategic financial support, principally by functioning as an interim CFO. Rob and his team provide outsourced accounting, financial, and advisory services. He draws on deep industry experience to become a trusted advisor to the executive team, specializing in “translating” finance issues to non-finance leaders and Board members.

Rob has worked with BDO, supporting nonprofits, since 2021.  Previously, as Senior Managing Director for an automotive group including its nonprofit road safety foundation, he led a finance team of 50, including ownership of all finance functions (board reporting, accounting, FP&A, ERP migrations, treasury, accounts payable, taxes, and risk management). 

Earlier in his career, Rob worked in audit at KPMG, first in London and then in Philadelphia. He later held Internal Audit leadership roles at blue chip technology and insurance companies. He has also worked with a large food services company, where he had broad finance responsibility for the twelve countries in the international division, including support over several Olympics and World Cup contracts. 

Rob has also been an entrepreneur, as a co-founder of an artisanal coffee roasting business in Philadelphia.  He also has deep nonprofit volunteer experience as the Treasurer of numerous organizations.

Rob is a Chartered Accountant (UK), a CPA (Illinois), and has an MBA (West Chester University of Pennsylvania) and an BSc (Econ.) from Bristol University (UK).

Chris Garza, CPA, Senior Manager

Chris is a Senior Financial Manager with over 20 years’ experience in public, private and nonprofit accounting. He excels in staff management, internal control structure and external audit management.

At BDO, Chris specializes in providing strategic-level support to nonprofit organizations, overseeing the finance operations while helping clients resolve challenges, streamline processes, and develop meaningful policies to improve controls and staff buy-in.

Prior to joining BDO, he served as CFO of The Contemporary Austin Museum in Austin, TX, where he directed the accounting team and held responsibility over all fiscal aspects of the organization. During his tenure there, he oversaw and represented the Museum’ interests in two successful construction projects totaling $10MM.

Chris spent nearly a decade as CFO with the TX Council on Family Violence/National Domestic Violence Hotline with $12MM operating budget and over 100 employees. While there, he worked to simplify federal contracts by initiating and procuring a Federal Indirect Rate for the organization. He also oversaw the financial separation of the two entities and establishment of NDVH as an independent organization.

Victor de la Rocha, Experienced Manager

Victor is a dedicated finance and accounting professional with a robust background in enhancing the financial health of nonprofit organizations. He began his educational journey in Texas, earning a Bachelor of Business Administration in Accounting from the University of North Texas.

After graduating, Victor launched his career in the nonprofit sector, dedicating himself to supporting organizations that work on critical areas such as education, housing, the environment, immigration, food insecurity, homelessness, mental health, and youth services. Currently, he serves as an Experienced Manager in the Accounting Advisory & Outsourcing team at BDO USA, where he provides fractional Controller support by optimizing finance and accounting functions and delivering strategic insights to address both project-based and long-term needs.

Before joining BDO, Victor served as the Controller at Hyde Street Community Services, a rapidly growing outpatient mental health clinic, where he established their Finance and Accounting department.

With a passion for community service and financial expertise, Victor strives to make a meaningful impact in the nonprofit sector, helping organizations achieve their missions effectively. He recently passed the CPA exam and is currently pursuing his licensure.

Gina McDonald, CPA, Managing Director

Prior to joining BDO, Gina spent 17 years in public accounting experience, including 10 years focused on nonprofit accounting and financial reporting.

Gina currently works closely with a variety of nonprofits organizations to assist in building their internal fiscal capacity. Some current projects include evaluating the effectiveness and operations of internal controls and financial policies and developing and conducting trainings for clients and staff on a variety of technical accounting matters relative to nonprofits.

Gina is Board Treasurer of the Rhode Island College Foundation and the Rhode Island Council for the Humanities and was a 2013 Providence Business News 40 Under Forty honoree.

Gillian Gorra, Senior Manager

Gillian is an experienced nonprofit professional skilled in fiscal management, strategic planning, human resources and facility oversight, and she is deeply committed to empowering organizations and professionals to do their best work.

Gillian brings nearly two decades of management experience in both nonprofit and specialty retail. Most recently, she spent over ten years as General Manager then Managing Director of the acclaimed theater in Chicago. While in those roles, she established and oversaw all financial and HR systems and led the annual budget development and monitoring processes. Among other accomplishments there, she was integral in establishing a partnership with the Chicago Public Schools Real Estate department and worked to formalize the organization’s first donor acknowledgement and stewardship plan.

Gillian graduated with a B.A. in Musical Theater from Baldwin Wallace University and holds a Masters of Management in Nonprofit Management from North Park University in Chicago.