A CFO, for CFOs

Be the strategic partner your leadership team leans on—not just the scorekeeper.

Finance used to mean keeping score: close the books, build the model, report what happened. The job has since evolved.

Modern CFOs are systems thinkers. They get their hands dirty, designing systems for scale in support of strategic decision making. Where perfection is the enemy of good, time is finite, and information is at your fingertips.

This site is where I share what building that's taught me, plus the CFO Toolbox and Digital Library I built along the way.

Brian Weisberg
hi, I’m Brian 🤙
Status:

I am currently wrapping up my time at Mux and actively exploring what's next—early stage, growth stage, or something I haven't done yet.

If you're building something and think I could help, let's talk.

Thought leadership

What I write about

Frameworks, playbooks, and real opinions on building finance functions that scale—collected across writing, speaking, podcasts, and press.

  • AI in finance—separating signal from noise, tracking what’s changing.
  • Frameworks myself and others have built, real opinions, and stories from the trenches.
  • How to move from scorekeeper to strategic partner: stop reporting what happened, start shaping what’s next.
  • Showing up for the finance community—hosting my own podcast, speaking on panels, co-chairing demo days and events.
Recent highlights
Writing
Building a Modern Finance Team: How Two Leaders Are Rethinking the Process
The F Suite · Apr 2026

Co-authored with Mux CFO Jaime Ortiz on why the old revenue-banded hiring ladder for finance teams breaks down, and the three principles that replace it: prioritize whichever leg of the stool—accounting, FP&A, or business ops—is weakest, default to generalists over narrow specialists, and scale through systems and data before headcount.

Speaking & Events
Beyond the Spreadsheet: What FP&A Platforms Need to Deliver in an AI-First Era (Webinar Panel)
Abacum · Jun 2026

A panel with CJ Gustafson (Mostly Metrics) and Danny Prohaska (EPM Solutions) on why spreadsheets still run FP&A despite years of planning-software investment, and where AI creates real value for finance teams versus where it's just noise.

Podcasts
The Cash Flow Show—Conversations About How Tech Companies Make Money (Host · Full Episode Feed)
OnlyCFO

Brian's own interview series, hosted via OnlyCFO—operators on how their companies make money, in their own words. Full episode archive.

Press
Spilled water, lost everything
Numeric newsletter, The Finance Engineer · Aug 2026

Numeric’s Finance Engineer newsletter profiled Brian on build-vs-maintain: when a spilled water bottle killed his team’s homegrown procurement tool, and the four practices—modular builds, project-based context, portable Skills, release notes—that keep a tool alive after the builder moves on.

See all thought leadership →
🚧 building
CFO Toolbox

Everything in the toolbox

Software, benchmarks, communities, and an AI research buddy.

Software
The software high-growth finance teams actually use.
Resources
The benchmarking sources I actually rely on.
Communities
CFO and finance communities worth joining.
FP&A Buddy
Ask a real FP&A question, get a sourced answer.
See the full toolbox →