Executive coaching and leadership advisory for senior leaders and founders
Partnering with leaders navigating scale, transition and organisational complexity
We provide targeted engagements for leaders navigating changes in scale, responsibility and organisational complexity.
Areas of focus
EXECUTIVE ADVISORY
Best For:
CEOs and C-suite leaders with enterprise-level accountability, global scope or complex organisational mandates.
Focus:
A sustained, high-trust and discreet partnership for leaders operating at the top of the organisation. This is a rigorous sounding board for complex situations, not a development programme. We examine how you exercise authority, make high-stakes decisions and shape organisational performance.
Impact:
Clearer, strategic judgement in complex situations.
Stronger decision-making at enterprise level.
Leadership that matches the scale and demands of the role.
FOUNDER ADVISORY
Best For:
Founders scaling organisations through institutionalisation, private equity investment, Series C/D or pre-IPO.
Focus:
Strategic support for founders as their role shifts from hands-on builder to leader of a complex institution. We address the practical implications of scale, including changes in control, delegation, managing competing stakeholder priorities, decision-making and leadership style.
Impact:
Reduced dependency on the founder in day-to-day operations.
Stronger leadership layers and clearer accountability.
Leadership model built for institutional growth.
LEADERSHIP TRANSITIONS
Best For:
Leaders stepping into new roles such as first-time C-suite roles, CEO positions, board appointments or significantly broader remits.
Focus:
An intensive, time-bound engagement focused on reducing risk and accelerating effectiveness during the first 90–120 days. We focus on cultural decoding, stakeholder dynamics and informal power structures so you can establish authority and credibility quickly.
Impact:
Building faster stakeholder alignment and influence.
Strong early authority and credibility.
Reduced risk during high-exposure transitions.
SENIOR TEAM ALIGNMENT
Best For:
Founding teams, C-suite and executive teams where growth, change or complexity has disrupted alignment and execution.
Focus:
Targeted work with senior teams to improve collective effectiveness. We address the underlying dynamics affecting how the team operates—including role clarity, authority and conflict—to ensure the team can act decisively in complex environments.
Impact:
Stronger alignment and trust across the senior team.
Improved decision quality and speed.
Reduced friction and misalignment at the top of the organisation.
About us
Clarity was founded by Rebecca Sebastian to partner with senior executives and founders at pivotal moments where scale, complexity and responsibility fundamentally change the requirements of leadership. In high-stakes environments, Clarity provides the reflective space and psychological rigour required to lead with precision.
Rebecca brings over 20 years of global experience across leadership, organisational effectiveness and executive advisory. A former corporate executive, she has led global talent and organisational development functions at TikTok and Bank of America Merrill Lynch, working closely with executive teams and boards across the US, Europe and Asia.
As an organisational psychologist with an MSc from Purdue University and an ICF-certified coach, Rebecca combines psychological depth with an acute understanding of how institutional systems operate. Her practice is focused on sectors defined by rapid growth and regulatory complexity—specifically Technology, Fintech, Financial Services and Professional Services.
Leaders partner with Rebecca when the stakes are high. Her work most often involves:
Executive Transitions: Navigating the shift into materially larger or more complex global roles.
Scaling & Institutional Growth: Supporting founders and CEOs as they move from hands-on operations to strategic enterprise leadership.
Systemic Performance: Addressing senior team or board-level challenges to strengthen alignment and decision quality.
High-Stakes Scrutiny: Providing a discreet sounding board for leaders operating under intense public or regulatory pressure.
Rebecca’s style is known for being thoughtful, direct and operationally grounded. Based in London, she works with a global portfolio of clients both in person and virtually.
What leaders are saying
“Rebecca helped me cut through complexity and lead with sharper focus during a pivotal stage of growth. Her insight and candour were exactly what I needed as we scaled the business.”
- Founder, Healthtech
"What began as a focus on a team issue became a fundamental shift in how I lead, think and show up. Rebecca provides the rare combination of high challenge and deep support that high-stakes roles require."
- CTO, Insurance company
“Rebecca challenged my thinking and provided the rigour needed to navigate a new remit with confidence. Her ability to hold up a mirror and ask the right questions made a significant difference to my transition.”
- Product head, Neo bank
“If you're ready to challenge your assumptions and find clarity in your leadership, Rebecca is the coach you need. Each session with her is a transformative experience. She has the rare ability to listen beyond words and ask powerful questions with warmth and insight.”
- Director, Global humanitarian organisation
Enquiries
For founders, CEOs and senior leaders navigating scale, change or complexity, Clarity offers a discreet space to think clearly and work through what matters.
If you would like to explore working together, please request an initial conversation below.