About Ellin Sidell
A Proven Leader in Influence, Leadership Development, and Career Strategy
Ellin Sidell is the CEO of The Sidell Method, a boutique talent development firm specializing in influence, leadership coaching, and high-performance team development. With decades of experience inside Fortune 500 companies, including Nestlé, Microsoft, and Costco, she has built a career at the intersection of behavioral science and leadership, helping professionals and organizations master the skills that drive success.
Ellin’s expertise spans executive coaching, corporate training, and organizational development, with a strong focus on ethical influence, neuroplasticity, and strengths-based leadership. She has helped leaders at all levels gain buy-in, strengthen team dynamics, and advance their careers by applying science-backed influence strategies.
A Career Built on Leadership and Influence
Throughout her corporate career, Ellin played a key role in developing leadership pipelines, designing mentorship programs, and driving multi-million-dollar initiatives.
At Microsoft, she led strategic operations for the billion-dollar Xbox brand, optimizing sales account processes and delivering large-scale IT initiatives. At Costco, she founded the company’s Leveraged Mentorship Program, which impacted more than 200 mentees and earned recognition from senior leadership.
As a founding member of the Cialdini Institute and a certified expert in behavioral science and influence, Ellin brings a research-backed approach to leadership development. She holds multiple coaching and leadership certifications, including:
- Associate Certified Coach (ACC) through the International Coaching Federation
- Certified Executive Coach through the Center for Executive Coaching
- Tiny Habits Certified Coach
- Maxwell Leadership Coach and DISC Consultant
- Associate Neuroplastician (A.npn) from the Organizational Neuroscience Network
- PMP (Project Management Professional) through the Project Management Institute
Speaker, Author, and Trusted Advisor
Ellin is a sought-after speaker on influence, leadership, and career development, known for her ability to translate complex behavioral science into actionable strategies.
As a co-author of The Influence Advantage, she shares insights from her career inside Fortune 500 companies, revealing how influence principles shape executive decision-making and career advancement.
Today, through coaching, consulting, and speaking, Ellin equips professionals and teams with the tools to lead, communicate, and drive results in any environment.
Unlock the Success Code to Influence Principles - Practical and Proven Examples to Ethically Persuade in Business and Life
What if you could persuade effectively and ethically—whether in business, leadership, or personal interactions—while maintaining trust and integrity?
In The Influence Advantage, six Certified Cialdini Practitioners reveal how to apply the science of persuasion through real-world strategies that create win-win outcomes. Drawing from decades of experience across multiple industries, this book bridges academic research with actionable insights, ensuring that you lead, connect, and persuade with impact.
Most Mentorship Programs Fail Because They’re Vague— These 20 Questions Fix That Fast.
Get a proven mentorship playbook that delivers clarity, connection, and leadership growth—starting with one powerful conversation.
