Excellence in Advisory
DIAJ Group is a Florida-based boutique firm providing high-touch business sale and acquisition services to lower middle market companies. We combine the financial discipline of an investment bank with the discretion and dedication of a private advisor.
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A White-Glove Philosophy
Our practice is intentionally selective. We engage deeply with a small number of clients at a time to deliver bespoke strategy, refined execution, and clarity through every phase of transition.
Our Beliefs
- Trust is earned, not promised.
- Confidentiality is a baseline, not a bonus.
- Success is measured by alignment, not just valuation.
- The best outcomes come from preparation, not pressure.
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Leadership
David Reinikainen, Founder
David brings years of experience in entrepreneurship, valuation, and transactional strategy.
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Experienced. Credentialed. Personally Committed.
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David Reinikainen brings nearly two decades of experience in mergers & acquisitions, strategic deal structuring, and financial planning to help Florida business owners sell their companies with confidence and discretion. As the founder of South Florida-based DIAJ Group, David specializes in guiding service-based business owners through successful, stress-free exits—maximizing value while protecting confidentiality every step of the way.
Before launching DIAJ Group, David led multi-million-dollar transactions in corporate finance and investment banking, managing complex equity rollovers, debt placements, and private business sales. His past roles include senior financial counsel at a publicly traded company and various other leadership roles.
David holds a Juris Doctor (J.D.) and an LL.M. in Taxation, along with a Florida real estate license and FINRA Series 7 & 63 certifications—giving him the insight and tools to help owners plan their exits the right way.
Fluent in English, Spanish, and Mandarin Chinese, David brings a multicultural edge and a global business mindset to local Florida deals.
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Experienced. Credentialed. Personally Committed.​
David Reinikainen brings nearly two decades of experience in mergers & acquisitions, strategic deal structuring, and financial planning to help Florida business owners sell their companies with confidence and discretion. As the founder of South Florida-based DIAJ Group, David specializes in guiding service-based business owners through successful, stress-free exits—maximizing value while protecting confidentiality every step of the way.
Before launching DIAJ Group, David led multi-million-dollar transactions in corporate finance and investment banking, managing complex equity rollovers, debt placements, and private business sales. His past roles include senior financial counsel at a publicly traded company and various other leadership roles.
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David holds a Juris Doctor (J.D.) and an LL.M. in Taxation, along with a Florida real estate license and FINRA Series 7 & 63 certifications—giving him the insight and tools to help owners plan their exits the right way.
Fluent in English, Spanish, and Mandarin Chinese, David brings a multicultural edge and a global business mindset to local Florida deals.
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