Dan Linn
Founder, Hello World
Dan founded Hello World and has spent his career helping teams plan, build, and support software people rely on. He brings a developer’s eye and a partner’s patience to every leadership seat.
Fractional COO
Fractional Chief Operating Officer
The day-to-day engine that turns plans into results.
What a COO does
A COO runs how the company operates. They own process, people rhythms, delivery, and the metrics that show whether things are working. A fractional COO gives founders and CEOs a partner who keeps the trains on time. You get to focus on vision, customers, and growth.
Signs you need a COO
- The CEO is the bottleneck for most decisions.
- Growth is outpacing your processes and things fall through the cracks.
- Teams are busy but nobody can say what moved this quarter.
- Hiring, onboarding, and handoffs feel different every time.
- You need someone to run the business while you raise or sell.
What we own
- Design operating rhythms like planning, weekly reviews, and OKRs.
- Document and improve core processes across teams.
- Set up the metrics and dashboards leadership runs on.
- Shape org structure, roles, and accountability.
- Lead cross-team projects from kickoff to done.
Your first 90 days
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Days 1 to 30
Observe. We sit in on the work, map how decisions and handoffs happen, and find where time leaks out.
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Days 31 to 60
Design. We introduce the rhythms, owners, and metrics that fit your size and stage.
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Days 61 to 90
Run it. We lead the new cadence alongside your team until it feels normal.
What you walk away with
- An operating cadence the whole team follows.
- Clear owners and documented processes for core work.
- A metrics dashboard leaders check every week.
- More of the CEO’s time back for the work only they can do.
Meet your leaders
Christa Arriaga-Volker
Operations and strategy leader, Hello World
Christa leads operations, strategy, and experience engagements. She turns big goals into clear plans, steady rhythms, and teams that know what matters this week.
Fractional COO rates
The same simple rates as every role. See monthly examples.
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Hourly
$300 per hour
Quick reviews, decisions, and check-ins.
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Half day
$1,100 per half day
About four focused hours. Our most common block.
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Full day
$2,000 per day
Workshops, planning, and deep work with your team.
Same rates for every role. No minimums. No long-term contracts.
Talk with us about a fractional COO.
Start with a free intro call. We will listen, ask good questions, and tell you honestly whether fractional leadership is the right fit.