Meet the Team
Strategic Execution Meets Leadership Psychology
Oxyfen is led by John Barnes and Naomi Holdt, whose complementary experience brings together commercial strategy, executive leadership, organisational psychology and human systems insight.
Together, they support CEOs, founders, boards and leadership teams navigating growth, acquisitions, transformation and complexity.
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Founder | Strategic & Commercial Advisory
John Barnes
John Barnes is a serial CEO with more than 30 years of experience leading complex organisations through growth, acquisitions, restructuring, operational transformation and strategic expansion.
His background spans executive leadership, mergers and acquisitions, alliance development, organisational integration, operational scale, commercial strategy and international business leadership.
John has worked extensively across global and emerging markets, bringing deep experience in executive decision-making under pressure.
At Oxyfen, John supports organisations through moments of strategic complexity, helping leadership teams think clearly, align operationally and execute sustainably.
His work focuses particularly on:
Strategic growth, M&A environments, Executive strategic partnership, Organisational scaling, Leadership alignment
and Operational clarity
Co-Founder | Leadership & Organisational Development
Naomi Holdt
Naomi Holdt is a clinical and organisational psychologist specialising in leadership under pressure, organisational dynamics, executive functioning, communication systems and human behaviour within complex organisations.
Her work focuses on helping leaders and organisations understand behavioural patterns, leadership blind spots, organisational communication breakdowns, conflict avoidance, executive pressure responses, psychological safety within teams and leadership capability development.
Naomi works closely with CEOs and leadership teams to strengthen the human systems required to support sustainable organisational performance.
Her work bridges:
leadership psychology, executive coaching, organisational development, leadership communication, emotional intelligence and behavioural transformation without disconnecting these dynamics from commercial reality.
Why The Partnership Works
Two Disciplines. One Integrated View of Organisational Performance.
Oxyfen’s strength lies in the integration between strategic execution and leadership psychology.
John and Naomi operate from different disciplines while solving the same organisational challenges from complementary perspectives. This allows Oxyfen to address strategic complexity, operational execution, leadership behaviour, organisational dynamics, human capability, communication systems and sustainable organisational growth as interconnected realities rather than isolated problems.
Start a Confidential Conversation
If your organisation is navigating strategic growth, organisational complexity, leadership pressure, operational strain, mergers and acquisitions, executive transition or leadership development challenges, we welcome an initial confidential discussion.