Advanced Executive Coaching

Yolanda Saez Castello

Advanced Executive Coach

I spent 13 years making decisions under pressure. Now I help senior leaders make better ones.

Former Citi | Cambridge University & London Business School

10+ years working with high-performing professionals

Start a conversation →

html

How I work

Ten years in global banking taught me what happens to judgement when the stakes are real and the clock is running. I work on thinking, and on the physiology underneath it, because judgement can degrade before anyone notices it has.

That means drawing on twelve years of practice with professionals, including emotional regulation, alongside evidence-based coaching, so the leaders I work with can hold their clarity, their energy and their presence through sustained demand. Performance that lasts.

html

Experience & credentials

Trusted by professionals from leading global organisations in finance, law, technology and education.

Cambridge

Cambridge Advanced Executive Coaching Programme, Møller Institute, Churchill College, University of Cambridge

London Business School

Masters in Finance

12 years

Working with high-performing professionals in corporate and educational settings

Governance

13 years board experience across four Jersey organisations, including 9 years as a trustee of the Jersey Childcare Trust

At senior level, performance doesn’t break down because of workload. It breaks down because thinking gets compromised under pressure.

Yolanda Saez Castello

Coaching for leaders & organisations

Three ways to work together.

01

Executive Coaching for Individuals

One-to-one advanced executive coaching to increase effectiveness and develop sustainable performance without burnout. Online or in person in Jersey.

Start a conversation →

02

Executive Coaching for Organisations

Coaching for leaders and key talent, funded by organisations investing in their people’s performance and resilience. Enquiries include scope and headcount.

Make an enquiry →

03

Bespoke Coaching Engagements

Custom-designed coaching for specific leadership, transition or organisational needs. Teams or individuals. Online, at your offices, or offsite.

Discuss a brief →

The approach

Coaching that works on thinking, and on the physiology underneath it.

01

Clarity Under Pressure

A confidential space to think clearly when decisions carry weight and complexity. Sessions are where leaders slow down, reflect and regain strategic perspective.

02

Emotional Regulation

Judgement degrades before anyone notices it has. I work on the physiology underneath performance, drawing on thirteen years of applied practice in emotional regulation, including somatic and acupressure-based techniques.

03

Sustainable High Performance

Performance that holds over time, not driven by constant adrenaline or overextension. Leaders learn to maintain focus, energy and presence through sustained demand.

04

Built Around You

Every engagement is shaped to the leader in front of me and the pressures they actually face. The methods are chosen deliberately, to move the outcomes that matter to you.

About Yolanda

Thirteen years inside the pressure I now coach people through.

“It was exhilarating. Until it wasn’t.”

I began my career in global banking, spending 13 years in corporate environments at every level, including a decade at Citi, mostly in derivatives and FX trading. I managed teams, navigated fast-moving markets, and delivered in roles where the expectations never dropped.

Then I burned out. That experience reshaped how I understand leadership, resilience and sustainable performance, and it led me into executive coaching with a deep appreciation for the internal demands placed on high-achieving professionals.

MSc in Finance, London Business School, ranked best in the world by the Financial Times.
13 years in global banking, including derivatives and FX trading roles.
Advanced practitioner in emotional regulation, with over 11 years supporting professionals with resilience and performance in corporate and educational settings.
Advanced Executive Coaching Diploma, Churchill College, Cambridge University.

<

Research-supported impact

Executive coaching is supported by a growing evidence base.

Controlled trials and meta-analytic research have found positive effects of workplace coaching across leadership and personal outcomes. Hover or tap each figure for the evidence behind it.

37 RCTs

Randomised controlled trials included in a comprehensive meta-analysis of workplace coaching.

Hover or tap for source →

A meta-analysis of workplace and executive coaching examined 37 randomised controlled trials across 39 independent samples and found a statistically significant positive effect of coaching across leadership and personal outcomes.

Source: de Haan & Nilsson (2023), Academy of Management Learning & Education.

2,528

Participants represented across the controlled studies analysed.

Hover or tap for source →

The meta-analysis covered 2,528 participants across 39 samples, providing controlled evidence of a significant positive effect of workplace coaching across leadership and personal outcomes.

Source: de Haan & Nilsson (2023), Academy of Management Learning & Education.

529%

ROI reported in one Fortune 500 executive-coaching programme.

Hover or tap for source →

A MetrixGlobal case study reported a 529% return on investment from an executive-coaching programme. When financial benefits from employee retention were included, the reported ROI rose to 788%.

Source: MetrixGlobal coaching ROI case study. This is a programme-specific result, not an expected ROI for coaching generally.

Work with me

Start a conversation.

Thirty minutes, no obligation, and I will tell you honestly if I am not the right fit. Choose a time that works for you.

Calendar not loading? Open the booking page →

Why leaders choose executive coaching

Clarity, presence, and performance that lasts.

Leaders typically come to executive coaching to strengthen leadership confidence and presence, gain clarity in complex decision-making, perform effectively under pressure and navigate periods of transition or organisational change.

Executive coaching is a recognised, evidence-based development intervention, with industry research consistently reporting measurable improvements in individual performance and strong return on investment for organisations.

My approach combines advanced, reflective executive coaching with evidence-based emotional regulation, drawing on eleven years of applied practice. Together they help leaders reduce overwhelm, think clearly under load, and build the resilience to perform at a high level. Not simply cope, but lead well.