What Years in Big 4 Taught Me About HR Transformation That Still Holds True

I left Big 4 to build something more personal and more direct — but I didn’t leave behind everything I learned. Some of it turned out to be permanent.

I spent years as a partner in a Big 4 practice before starting Cary Consulting Group, leading HR and workforce transformation engagements for organizations ranging from mid-market companies to some of the largest employers in the world. I left to build something more personal and more direct — but I didn’t leave behind everything I learned. Some of it turned out to be permanent.

The fundamentals don’t change with scale

Whether the client had 500 employees or 500,000, the projects that succeeded shared the same three ingredients: a clear-eyed understanding of the actual problem before anyone touched a solution, leadership genuinely willing to own the change rather than delegate it entirely, and a realistic view of what the organization could absorb in the timeframe available. The projects that struggled were missing at least one of those, almost without exception — and no amount of methodology or headcount fixed that.

Bigger isn’t always better — but rigor should travel

One of the real advantages of a Big 4 background is the discipline: structured methodologies, tested frameworks, a bench of specialists for nearly any scenario. That rigor is genuinely valuable, and I brought it with me. What I didn’t bring with me was the assumption that every client needs the full enterprise-scale version of it. A lot of the value I saw clients pay for wasn’t the framework itself — it was having someone experienced enough to know which parts of the framework actually mattered for their specific situation, and which parts were overhead.

The best advice is the advice you’re willing to give even when it costs you the engagement

Independence changes the math entirely. If a client doesn’t need a six-month advisory phase, I’ll tell them that.

In a large firm, there’s an inherent tension between what’s best for the client and what extends the engagement. It’s rarely explicit, but it’s real. If the answer to their HCM question is “your current system is fine, the problem is your process,” that’s the answer they get. That kind of candor is harder to guarantee at scale, and it’s one of the biggest reasons I built this firm the way I did.

Technology decisions are never really about technology

Every platform selection, every implementation, every system optimization I’ve been part of — the technology was rarely the hard part. The hard part was always organizational: getting the right people aligned on the actual problem, building genuine buy-in for the change, and having the discipline to measure success by adoption and outcomes rather than by a go-live date. That was true fifteen years ago with on-prem systems, and it’s just as true today with AI-enabled cloud platforms.

Why I built it this way

Cary Consulting Group exists because I believe organizations deserve senior, direct, genuinely independent advice — the kind that comes from someone who has actually led these transformations, without the overhead or the incentive misalignment that can come with a large firm structure. That’s not a knock on where I came from. It’s what I learned there, applied to how I think clients are best served now.