Five Core COO Responsibilities for Scaling an Early-Stage Startup

Executive overview

Startup COOs operate in a fundamentally different mode from those in mature companies, requiring a bias toward alignment, speed, and generalist talent over process and specialisation. The job is to translate the CEO's direction into focused execution while building the people infrastructure that sustains growth. Cameron Herold draws on scaling 1-800-GOT-JUNK from $2M to $106M in six years to ground each principle in practice. Without deliberate culture and disciplined prioritisation, a fast-growing startup will diffuse its energy and stall.

The startup COO's primary job is to convert the CEO's vision into aligned people working on the critical few things.

Aligning the team to the CEO's vivid vision

• The vivid vision — a 4-5 page document describing the company's future state — is the COO's primary alignment tool
• COO must ensure the CEO has actually crafted it, not just conceived it
• Alignment is an ongoing act, not a one-time onboarding step
• Without a shared destination, individual contributors optimise for different targets

Getting the right people on the right work

• Jim Collins' "right people on the bus" principle applies at every hire decision
• Early-stage hires should be generalists: project-oriented, adaptable, high-agency
• Specialists come in only after proof of concept, funding, and revenue growth are established
• Recruiting, interviewing, and onboarding are core COO competencies, not HR tasks

Focusing on the critical few over the important many

• Startups face a constant flood of projects, tasks, and opportunities that fragment attention
• The COO's discipline is to identify and protect the flywheel — one or two activities that compound momentum
• Sustained pressure on the flywheel creates internal momentum that self-reinforces
• Saying no to the important many is as strategic as executing the critical few

Building culture by design

• Culture is not emergent — if you don't design it, neglect becomes the culture
• New hires must already live the core values; they should not need to be taught them
• Excitement about the BHAG and vivid vision is a hiring filter, not just an onboarding message
• The right people, genuinely aligned to the culture, generate momentum on their own