How to start

Start with the problem.

Tell me what you're wrestling with. If I can help, I'll tell you how. If I can't, I'll point you somewhere better.

I work with a handful of companies at a time, by design — from a single conversation that reframes a decision to multi-month operating partnerships like RightMetric, each scoped and priced to the problem.

Pushback with purpose — I'll make you defend it.
Strategy welded to execution.
Darby Sieben in a glass-walled office
Flagship · A Yellow Pages career by the numbers

I led product and partnerships, helped drive 16 acquisitions, then ran Mediative — Yellow Pages Group's digital agency.

Web, search, cloud, APIs — built when the rest of the industry was still print.

DIGITAL REVENUE6.2× GROWTH
$90M
$556M
$0M
Digital revenue grown, from $90M
$1B+
In partner deals
0
M&As led

"The logo wasn't sexy. The work was."

Read the full story →
Darby Sieben seated cross-legged with a team of miniature versions of himself
AI-first, in practice

Currently leading an AI-first transformation of a research-as-a-service firm — turning tribal knowledge into systems and rebuilding operations around AI-native workflows, driving triple-digit YoY revenue growth.

"He didn't just advise on strategy — he helped us build the frameworks to make it happen… instrumental in automating key parts of our delivery and refining our operations to improve our margins."

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Charlie Grinnell · Co-CEO, RightMetric
Read: How I Work With AI →
What people say
On strategy & positioning

"Darby has been an important voice in helping me sharpen the story, strategy, and positioning behind Plethora Farms. His ability to challenge founders thoughtfully while providing practical, honest guidance has made a real impact on my journey. I'm grateful for his support and would highly recommend him to any founder looking to communicate and build with more clarity."

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Mondar Chaudhury
Founder & CEO, Plethora Farms

"Darby knows the future and can tell you what we'll be talking about in 3 years — because he already tried it."

J
Julie Sanchez · Google
from our years working together at Yellow Pages

"He takes super complex business challenges and translates them into plain English… if you need someone to help you think through your most significant business decisions, I'd highly recommend Darby."

S
Sean Hurley · RBC Ventures
from our work together at RBC Ventures
On scale & first principles

"Darby brings experience from a billion-dollar-plus organization and makes the lessons practical at the scale a business is actually operating. What I value most is his relentless focus on first principles — he questions assumptions, gets to the root fast and keeps attention on what actually drives revenue."

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Kevin Hayes
Managing Partner, Variant1

"He helped pivot our business to record-breaking profitability within a year… one of Canada's most well-connected tech executives."

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Chris Pinkerton · Chief Growth Officer, Flybits
from our years working together at Mediative

"One of the most thoughtful and effective product leaders and mentors that I have worked with… the rare ability to balance strategic thinking with practical execution."

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Rose Koo · Product, RightMetric
from our work together at RightMetric

My best work is with teams at a growth inflection, a transformation they can't see around or an AI-first rebuild they know is coming.

If that's you — let's talk.