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David O'Neil

Chief Growth Officer

Top 5 Things to Know About David

  • Leads Walter Shuffain’s strategic growth and firm-wide execution agenda
  • Serves on the firm’s Executive Leadership Team
  • Oversees growth, operations, people initiatives, and financial planning
  • Brings experience from Big Four accounting and global consulting environments
  • Known for connecting long-term vision with disciplined implementation

David O’Neil helps shape and execute Walter Shuffain’s strategic direction, with a focus on growth, operational alignment, and long-term organizational strength. Colleagues value his hands-on leadership style, strategic perspective, and ability to connect vision with practical execution across the firm.

As Chief Growth Officer and a member of the Executive Leadership Team, David leads growth and merger and acquisition initiatives while helping guide firm-wide strategy and priorities. His role spans strategy, operations, people initiatives, and financial planning, with an emphasis on strengthening the firm’s foundation as it scales. He works across the organization to advance initiatives that enhance client service, expand capabilities, and support measurable, sustainable growth.

David brings prior leadership experience in strategic planning, operational execution, and value creation, with earlier roles in both Big Four accounting and global management consulting.

  • Strategic Growth Planning
  • Merger & Acquisition Initiatives
  • Operational Execution
  • Organizational Strategy
  • Financial Planning
  • Leadership Alignment

  • Master of Business Administration, Tuck School of Business at Dartmouth College
  • Bachelor of Science in Business Administration, Florida Southern College

At Walter Shuffain, we believe anything is possible — my goal is to help turn that belief into lasting outcomes for our people, our clients, and the firm.

Outside of Work

Outside of work, David enjoys spending time with his family. He met his wife, Danielle, in college, and together they are raising their three young daughters. In the summer, they enjoy spending time in New Hampshire and on Cape Cod.

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Walter Shuffain is the brand name under which Walter Shuffain Advisors Inc. and WS CPAs P.C. provide professional services. Walter Shuffain Advisors Inc. and WS CPAs PC practice in an alternative practice structure in accordance with the AICPA Code of Professional Conduct and applicable law, regulations and professional standards. WS CPAs PC is a licensed independent CPA firm that provides attest services to its clients. Walter Shuffain Advisors Inc. and its subsidiary entities, which are not licensed CPA firms, provide tax, advisory, and other non-attest services to its clients. The entities are independently owned and governed and are not liable for the services provided by any other entity providing the services under the Walter Shuffain brand. Our use of the terms “our firm” and “we” and “us” and terms of similar import, denote the alternative practice structure conducted by WS CPAs PC and Walter Shuffain Advisors Inc.
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