A Chief of Staff is a senior operator who works directly with a CEO or other C-suite executive to extend their capacity and effectiveness — by managing strategic projects, coordinating cross-functional initiatives, preparing the executive for key decisions, and handling matters that require judgment and trust but not the executive's direct involvement. The Chief of Staff role is distinct from a COO (who owns operational functions) and an EA (who manages logistics and scheduling) in that it requires executive-level thinking and the ability to act on behalf of the principal.
What a Chief of Staff Does
A Chief of Staff's work varies significantly by principal and company context, but typically includes: managing the CEO's strategic agenda and ensuring follow-through on commitments, owning cross-functional projects that don't fit neatly into a single VP's remit, preparing materials for board meetings and investor communications, acting as a proxy for the CEO in internal meetings, and flagging issues the CEO needs to see before they become crises.
The role is defined by the CEO's specific leverage gaps. A CEO who is strong at external relationships but struggles with internal execution needs a Chief of Staff who compensates on the execution side. A CEO who is strong at strategy but gets pulled into operational detail needs a Chief of Staff who manages that operational demand.
Chief of Staff — Role at a Glance
Chief of Staff vs COO
The primary distinction between a Chief of Staff and a COO is span of authority. A COO owns specific functions (engineering, operations, finance) with direct line management authority and P&L accountability. A Chief of Staff operates through influence rather than authority — they do not own functions but enable the CEO to exercise theirs more effectively.
The Chief of Staff role is appropriate for companies where the CEO needs execution leverage but not a full COO-level organisational redesign. It is also commonly used as a development role for high-potential operators being groomed for VP or C-suite leadership.
“The Chief of Staff role fails when it's defined as 'help the CEO with everything'. It succeeds when it's defined as 'own these specific things that the CEO currently does and shouldn't'. The intake starts with a list of what the CEO is doing that they shouldn't be.”
Hiring a Chief of Staff
Strong Chief of Staff candidates typically come from: management consulting (strong analytical skills, comfort with ambiguity, ability to work across domains), investment banking or private equity (financial analysis, board communication, structured thinking), or prior operating experience that spans multiple functions.
The intake for a Chief of Staff search must answer: what specifically is the CEO not getting done that this person should handle, and how much authority will they be granted to act on the CEO's behalf? Without this clarity, the role becomes a catch-all that frustrates both the Chief of Staff and the team.