Jack is a Partner at WithumSmith+Brown, PC (formerly RBF). This consulting firm provides accounting, tax and business advisory services to companies in a variety of industries. In their role as a part-time or interim CFO for his clients, Jack provides financial and operational consulting services to life science, non-profit and high-technology companies at various stages of growth. Prior to co-founding the firm in 1998, Jack was responsible for accounting, operations and financial systems with firms in the advertising, financial services and construction fields
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