The seven types of COO and how to find the right one

Executive overview

Most leadership roles are interchangeable across companies. The COO role is not. The right COO depends entirely on what the CEO lacks — skills, bandwidth, temperament, or domain knowledge.

No two COOs on the planet have the same job. The COO must be great at whatever the CEO is not.

The COO's role is defined not by the work to be done, but by who the CEO is.

The seven COO types

1. Executor — Gets the work done on a daily/quarterly horizon while the CEO sets long-term vision. The classic "makes it so" operator.
2. Change agent — Brought in (usually from outside) to oversee a major turnaround, pivot, or growth phase. Useful when the team won't accept change from internal leaders.
3. Mentor — Supports a young or inexperienced CEO who has scaled faster than their management ability. Requires the CEO to have self-awareness and willingness to admit gaps.
4. Other half — The yin to the CEO's yang. Outward-facing CEO gets an inward-facing COO, and vice versa. Every COO is partly this.
5. Partner — Co-leads with the CEO; may be a co-founder. Frees CEO from 100-hour weeks. Works only when both leaders can operate without blurring boundaries.
6. Heir apparent — Groomed as a potential successor. Succession is not guaranteed — it's a proving ground. Usually an internal hire.
7. MVP — A high-performing internal leader promoted to COO to prevent them leaving. May evolve into an heir apparent.

How the COO role fits the company stage

• In very small companies, the second-in-command is often more a right-hand than a true COO
• First COO hire is usually the first seasoned senior role — expect it to drive significant change
• The integrator model (Wickman's Rocket Fuel) works well up to ~50 employees or $1–15M revenue
• At scale, integration becomes far more complex; the COO role shifts from doing to enabling
• As a company grows, the COO should hire accountable people rather than enforce accountability

Core functional roles a COO plays

• Adult in the room — Translates the business world for a technically focused founder; less relevant now that tech literacy is widespread
• Follower — Executes the CEO's vision without challenging it; suits smaller entrepreneurial companies
• Devil's advocate — Challenges the status quo and the CEO's assumptions; must combine disruption with strong people skills
• Designer/executor split — CEO defines the what; COO figures out the how and who. The homeowner/contractor model: the tail never wags the dog
• Moderator — Facilitates real debate, builds consensus, keeps the leadership team aligned without becoming the tiebreaker (that's the CEO's job)

Finding the right COO

• Don't start with the COO — start with the CEO's personality, strengths, and gaps
• A COO who is marketing-focused would fail in a finance-heavy role, and vice versa
• Domain expertise matters in tech and engineering; less so in industries like home services
• The search is like a marriage: takes time, effort, and the right match — but the leverage is enormous
• CEOs who invest in their own growth (mastermind groups, coaching) are increasingly bringing their COOs into similar development tracks