You know you need help. What you don’t know is whether that help is a chief of staff or an EA who can catch more than a calendar.
Hiring a chief of staff is one of the most consequential moves a founder can make. It’s also one of the easiest to get wrong. I’ve built this role from scratch more than once, inside a Fortune-level exec team and for founders who thought they knew what they wanted and didn’t.
Here’s what actually matters before you post the job.
Signs you actually need a chief of staff (not an EA or ops hire)
An EA manages your calendar and inbox. A great one anticipates what you need before you ask.
An ops hire executes a plan you’ve already built. Hand them the steps, and they’ll run them well.
A CoS does something different. They sit close enough to see the whole business, then decide what actually deserves your attention this week.
Picture two people asking for time on your calendar tomorrow: a customer escalation and a board member with a question you haven’t thought through. An EA schedules the calls. A CoS tells you which one actually matters and why, before you walk in.
If you’re drowning in decisions no one else can make, you need a CoS. If you’re drowning in tasks that just need doing, you need an ops hire. Get that distinction right, and hiring a chief of staff becomes a much easier call.
What a good chief of staff owns
A strong CoS owns the follow-through on decisions you’ve already made, and the truth about where every project actually stands. They walk into your highest-stakes meetings already knowing what’s at risk.
Founders often expect more. They want someone to set strategy or make calls that are still theirs to make.
A good CoS makes your judgment scale further. That’s the failure mode to watch for when hiring a chief of staff: bringing someone in to own decisions that should still be yours, which almost always backfires, because the muscle you actually need built is yours, not theirs.
Fractional versus full-time: the real trade-off
A full-time CoS earns their seat once the complexity is constant: multiple executives and board reporting. That’s usually well past Series A, once the org chart has real layers in it.
A fractional CoS earns their seat earlier, when you need the function but not 40 hours of it yet. You get someone who’s run this before, at a fraction of the comp and equity a full-time hire requires. For most founders, hiring a chief of staff fractional first is the lower-risk way to test the fit before committing to full-time.
The trade-off is ramp time. A fractional CoS has to get useful fast, in weeks, not quarters. Someone doing this job for the first time can’t move that quickly.
Questions to ask before hiring a chief of staff
These are the questions worth working through before hiring a chief of staff, whether you’re going fractional or full-time.
Ask what they decided on their own in their last seat, and what they escalated. That ratio tells you more about their judgment than their resume does.
Ask for one specific project they pulled back from the brink, with real names and real numbers. Vague answers here predict vague performance later.
Ask how they’d spend their first 30 days with you. A specific plan beats an eager yes every time.
Where Adnova fits
This is the work Adnova does. We step in as fractional chiefs of staff for founders who are hiring a chief of staff for the first time and don’t want to gamble a full-time hire and full-time comp on someone unproven.
If you’re still weighing whether this role is right for you, What is a Fractional Executive? A Practical Guide for Founders is a good place to start. If you already know fractional is the shape you want, Fractional vs. Consultant vs. Interim breaks down where a CoS fits next to the other options.
For the chief of staff on the other side of this hire
Everything above is written for you, the founder doing the hiring. But the person you hire has a learning curve of their own. Whether you’re hiring a chief of staff for the first time or the third, the questions above hold up.
If you’re the chief of staff being hired, or you’re already in the seat, I write for you every week at The CoS Signal. Send this post to the person you’re considering. It’s the other half of this conversation.