
Top 5 Strengths Ideation, WOO, Empathy, Learner, Achiever.
Onno Hayes Koelman
Specialties Executive Coaching, Founder & First‑Time CEO Development, Leadership Transitions, High‑Growth Startups, Team Alignment & Culture, Systems‑Level Leadership, 360 Feedback (Leadership Circle Profile)
Credentials
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Certified Leadership Circle Profile (LCP) Practitioner
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Certified EQ‑i 2.0 Emotional Intelligence Practitioner
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Certified SquadifyPro Facilitator (high‑performing teams)
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Extensive training in Harvard‑affiliated Immunity to Change, Paradigm Shifting, and Growth Edge Coaching
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Stanford University Engineering Graduate
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NCAA Championship Athlete
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13+ years of coaching experience with 3,300+ hours logged
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Deep experience coaching leaders in municipalities, utilities, and government leadership programs
Summary Profile
Onno is an executive coach known for his intensity, clarity, and ability to help high‑achieving leaders grow into the roles their organizations now require of them. His coaching is especially impactful for founders and first‑time CEOs who are technically brilliant but facing the leadership challenges that come with scale, complexity, and people‑dependent success. As his bio states, “Onno has worked with hundreds of leaders at a variety of organizations over the past 15 years… and now focuses on Founders & 1st time CEOs.”
A Stanford engineering graduate, NCAA championship athlete, and citizen of three nations, Onno brings a rare combination of analytical rigor, global perspective, and human‑development expertise. His bio captures this blend clearly: “Onno brings both the required expertise in human development and the requisite intensity to work with busy, strong‑willed executives.”
His coaching helps leaders step out of the “engine room,” elevate their leadership altitude, and build the systems, relationships, and cultural foundations required for sustainable growth. He is known for being direct yet empathetic, structured yet expansive — a thought‑partner who helps leaders see blind spots, shift long‑standing patterns, and accelerate their development.
Representative coaching experience includes:
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Coaching senior leaders in the National Park Service, including debriefing OPM 360s and supporting leaders across geographically dispersed teams
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Supporting a CTO and top engineer through a transformative 360 process that dramatically improved emotional regulation, collaboration, and organizational impact
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Coaching a CEO of a blue‑collar company for 2.5+ years, helping him shift from pressure‑driven leadership to systems‑level leadership that improved culture, retention, and long‑term strategy
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Facilitating 24+ Leadership Circle Profile 360s and multiple verbal 360s, helping leaders identify patterns, blind spots, and actionable development priorities
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Coaching technical leaders transitioning into senior management roles, helping them elevate from hands‑on execution to strategic, people‑centered leadership
Onno brings a powerful combination of intensity, insight, and practical frameworks that help leaders grow rapidly and sustainably — becoming the leaders their organizations need them to be.
