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Confessions of a Recovering ‘AI Finance Bro’: Why I Embraced Human CFOs Again

Written by David (DJ) Johnson
EntrepreneurshipStartup Finance

I was the poster child for Silicon Valley’s AI finance fantasy. “Why pay a CFO $300K when AI can do it for $30K a year?” I’d crow to skeptical investors, convinced I’d cracked the code. My startup’s finance stack was fully automated—no bloated salaries, no human error, just cold, hard algorithmic efficiency.

The pitch was intoxicating: “Our AI doesn’t sleep, doesn’t complain, and doesn’t need equity.”

At first, the results seemed miraculous. Our AI caught a $250K accounting error in its first month, automated runway projections with eerie precision, and even made our board decks look polished. I became insufferable—bragging at founder meetups, dismissing traditional finance teams as “legacy overhead.” But then, the cracks appeared. The first warning sign? Our AI missed a critical payroll tax deadline because it couldn’t interpret new state legislation. The dashboard glowed green, but the state’s penalty notices were very, very red.

I swore AI was the future—until it almost killed my startup. 

The Breaking Point: Where AI Failed Us

The Sales Commission Disaster

Our “smart” compensation system was supposed to be a triumph of automation. Instead, it became a $180K liability. The AI misclassified multi-year contracts as one-time sales, overpaying reps with no clawback logic. When we manually corrected the errors months later, morale cratered. Top performers felt betrayed, and our VP of Sales quit, muttering, “I’d rather trust a spreadsheet.”

The Silent Churn Crisis

The AI proudly reported “stable” 5% monthly churn—until our enterprise customers quietly slashed seat counts. By the time revenue dropped, the damage was irreversible. The algorithm processed numbers but couldn’t sense attrition brewing in unlogged customer calls or off-platform downgrades.

The Fundraising Wake-Up Call

Investors eviscerated our AI-generated financials. “Why does your model assume linear growth?” one scoffed. “Where’s the scenario planning?” demanded another. The AI spit out pretty graphs but couldn’t defend the assumptions behind them. Our deck’s “confidence score” was 98%; our credibility was zero.

The Human Comeback Tour

The Interim CFO Lifeline

In desperation, I hired a fractional CFO. In 48 hours, she:

  • Uncovered our AI’s flawed churn assumptions

  • Rebuilt investor trust with explainable, scenario-based forecasts

  • Taught our team to question AI outputs, not worship them

The New Division of Labor

We found balance:

  • AI handles: Transaction coding, anomaly alerts, report generation

  • Humans own: Strategy, exception handling, investor storytelling

The Hybrid Model

Now, AI drafts financial narratives, but humans stress-test assumptions. Together, they create board-ready insights—neither fully automated nor blindly manual.

Lessons for Other AI-Obsessed Founders

When AI Excels

Three tasks we’ll never take back from machines:

  1. Real-time variance detection (AI spots errors faster)

  2. Regulatory deadline tracking (never miss a tax filing again)

  3. High-volume reconciliations (AI crushes mind-numbing work)

Where Humans Dominate

AI can’t replicate:

  • Reading investor subtext (that “Hmm” means “Hell no”)

  • Judging strategic trade-offs (e.g., growth vs. burn)

  • Coaching teams through austerity (layoffs need empathy, not algorithms)

My Unlearning

I stopped obsessing over:

  • “100% automated” as a badge of honor

  • Real-time data as inherently better (sometimes slower = wiser)

  • AI “confidence scores” as truth (they’re just math, not judgment)

Our Hybrid Finance Stack Today

The AI We Keep

  • Kudwa for anomaly detection

  • Aleph for FP&A

  • Ramp for spend management

The Humans We Rely On

  • Fractional CFO for strategy

  • Tax attorney for compliance

  • Outsourced accountant for bookkeeping

The Surprising Result

Our “downgrade” to a hybrid model:

  • ↓ 40% finance ops costs (fewer AI-caused fires to fight)

  • ↑ 25% forecast accuracy (human + AI > AI alone)

  • ✓ Investor confidence restored (they trust people, not black boxes)

About the Author

David (DJ) Johnson

DJ is the Director of Rooled. His entrepreneurial journey started as an accountant for two Big Four accounting firms, then to managing rock bands for 10yr. Financial advising called him, and he built one of the first ever outsourced accounting firms.