HomeTechMeet the fractional executives behind some of Miami’s fastest-growing startups

Meet the fractional executives behind some of Miami’s fastest-growing startups

As startups stay lean and AI reshapes how companies are built, a growing network of experienced operators is helping Miami founders scale without ever becoming full-time employees.

A Miami startup has just closed a funding round and suddenly needs investor reporting that can stand up to scrutiny. Another is preparing for its first audit. A third has product-market fit and growing revenue, but no real marketing strategy. A fourth is hiring so quickly that culture, compliance, and people systems are starting to buckle.

Ten years ago, many of those companies would have begun searching for a full-time executive.

Today, they’re increasingly making a different call.

Across Miami, a growing number of startups are turning to fractional executives: experienced CFOs, CMOs, COOs, people leaders, and operators who join leadership teams on a part-time basis, bringing years of experience without becoming full-time employees.

The concept isn’t new. But as founders stay lean for longer, investors push companies to spend more carefully, and AI automates more routine work, fractional leadership is taking on a much bigger role.

For years, the story of #MiamiTech has centered on founders, investors, and companies relocating to South Florida. Less attention has been paid to the people helping those businesses scale once the headlines fade. 

They rarely appear on cap tables or keynote stages. But inside many of Miami’s fastest-growing companies, they’re becoming indispensable.

More than consultants

Fractional executives don’t fit neatly into a traditional organizational chart. Unlike consultants, who are often hired to solve a specific problem before moving on, they become part of a company’s leadership team, helping shape strategy over months or even years. The difference is that they do it across several companies at once.

Many startups don’t yet need a full-time executive, but they do need someone who has already been through the challenges they’re about to face.

That demand is what led Kartheek Mulpuri to make fractional work his full-time career.

After beginning fractional work during the pandemic while balancing corporate leadership roles, Mulpuri moved to Miami in 2023 and built a practice focused on helping startups with strategic finance, controller support, operational finance, and bookkeeping.

“Founders usually don’t need a full-time CFO on day one,” Mulpuri told Refresh Miami. “They need someone who’s already helped companies navigate fundraising, audits, and growth before.”

He has worked with companies including Dose, FIT:MATCH, CoralVita, and IRIS Intelligence, helping build investor models, guide first audits, implement ERP systems, and strengthen financial reporting. He have also supported local investors such as Reformation Partners with quality of earnings work during acquisitions.

It’s the kind of work founders rarely post about on LinkedIn. But behind many successful fundraising rounds is someone making sure the financial foundation is ready when opportunity arrives.

Kartheek Mulpuri

Experience on demand

Finance is only one piece of the puzzle.

As startups grow, founders face a different set of questions. How should the company position itself? Is the brand telling the right story? When is it time to hire? How do you build an organization that can scale?

Increasingly, they’re bringing in experienced leaders who have answered those questions before.

Through her consultancy Bring on the Brand, Alana Elias Kornfeld serves as a fractional chief marketing officer, chief communications officer, and brand strategy advisor, helping technology companies sharpen their positioning, develop fundraising narratives, build executive visibility, and create go-to-market strategies.

“The fractional model has become increasingly valuable because many growing companies need senior-level strategic leadership long before they need, or can justify, a full-time executive hire,” Elias Kornfeld said. “Founders gain access to executive experience, pattern recognition, and cross-functional leadership without adding permanent overhead.”

Elias Kornfeld believes Miami is particularly well suited to this model.

“The city attracts ambitious founders who move quickly, build lean teams, and value access to specialized expertise,” she said. “Fractional leaders can help companies accelerate growth, avoid costly mistakes, and bridge the gap between early-stage scrappiness and mature organizational leadership.”

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Alana Elias Kornfeld

Rafael Garcia has watched that shift play out over nearly a decade as a fractional marketing executive and growth advisor.

“The common thread is usually the same: strong founders, real products, early traction, and the need to move from opportunistic growth to more intentional scale,” Garcia said. “Many companies are not ready for a full-time CMO, but they still need experienced executive judgment at the leadership table.”

He has also watched Miami itself mature.

“Earlier in my fractional career, many of my clients were based outside Miami,” Garcia said. “Today, most of my clients are local or deeply connected to the Miami ecosystem. That shift says a lot. The ecosystem has grown from being mostly a promise into becoming a place where serious companies, founders, investors, and operators are actually building.” One example of a Garcia client: Félix.

Rafael Garcia

The same evolution is happening in people operations.

Sara Josephs, founder and CEO of SJ Startup Solutions, works with startups as they establish hiring strategies, build culture, and create the organizational foundations they’ll eventually hand over to a full-time Head of People.

“My background in people operations has given me a front-row seat to one of the biggest challenges facing startups: growth often outpaces infrastructure,” Josephs shared. “Founders are expected to simultaneously hire, retain talent, develop culture, implement processes, and drive business results.”

She believes Miami’s mix of entrepreneurial energy, international connections, and willingness to embrace new ways of building companies makes it a natural fit for fractional leadership.

Sara Josephs

The next evolution of the startup team

If Miami’s growing startup ecosystem is creating more demand for fractional executives, artificial intelligence may be accelerating the trend.

After leadership roles spanning traditional finance and crypto, Adina Fischer now works as a fractional CFO and COO, helping investment funds and startups build operational systems that can scale efficiently.

Increasingly, those systems include AI.

“We’ve automated things like reviewing pitch decks against predefined criteria, updating CRMs after investments, and preparing quarterly LP reporting,” Fischer told Refresh Miami. “AI handles a lot of the repetitive work, which lets experienced operators focus on the decisions that actually require judgment.”

Rather than replacing experienced operators, she believes AI makes them even more valuable.

“A lot of companies actually do not need full-time hires anymore, but they need more fractional help,” Fischer said. “If they’re new founders and perhaps don’t know exactly how to execute in a certain way, having experienced people come in fractionally can be really valuable.”

Adina Fischer

The rise of fractional executives is about changing where expertise is applied. As software automates more routine work, experienced operators spend less time on administration and more time helping founders make better decisions.

For Garcia, that’s exactly what Miami’s next chapter requires.

“Capital will matter, but operators will matter just as much,” he said. “The next phase is about building durable companies with real revenue, strong teams, clear positioning, and scalable go-to-market systems. Fractional leadership can help fill that gap by giving companies access to experienced executives earlier and more flexibly.”

Miami has spent years attracting founders, investors, and attention. As the ecosystem matures, the companies that thrive may be defined just as much by the operators working behind the scenes.

They rarely appear in funding announcements or on conference stages. But inside many of Miami’s fastest-growing startups, they’re already helping build what comes next.

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Pictured at the top of this post: Adina Fischer (front) with founders, investors, and builders at a recent Superteam USA event in Miami. Fischer is among a growing number of fractional executives helping startups scale by bringing senior operational expertise to multiple companies.

READ MORE IN REFRESH MIAMI:

I am a Miami-based technology researcher and writer with a passion for sharing stories about the South Florida tech ecosystem. I particularly enjoy learning about GovTech startups, cutting-edge applications of artificial intelligence, and innovators that leverage technology to transform society for the better. Always open for pitches via Twitter @rileywk or www.RileyKaminer.com.
Riley Kaminer

 

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