Unlock the Power of High-Performing Teams

                                                  Grounded in science, powered by the Rocket Model™, and tailored to your world. I help teams turn potential into performance. Trusted by 3,000+ teams worldwide.

Why teams matter

No one wins alone. Behind every bold idea or breakthrough result is a team — collaborating, adapting, and performing under pressure.

A great plan means little without a team that can execute. That’s why we coach the team as the real unit of transformation. Using The Rocket Model™, an evidence-based framework trusted by thousands worldwide, we help leaders build clarity, trust, and accountability so their teams can achieve more together than they ever could alone.

                      The Rocket Model™

The Rocket Model™ is a research-based framework designed by Gordon Curphy (PhD) to build high-performing teams. Grounded in over 20 years of evidence and used by thousands of teams globally, it identifies the core components of success.

  • Context: Understanding the environment, assumptions, and alignment with customers, stakeholders, and influencers.

  • Mission: Defining the team’s purpose, goals, and the strategy to win.

  • Talent: Ensuring the team is sized correctly, with clear roles and the right skills to succeed.

  • Norms: Establishing effective rules for communication, decision-making, meetings, and accountability.

  • Buy-In: Building commitment to the team’s goals, roles, and rules.

  • Resources: Securing the budget, data, equipment, and authority.

  • Courage: Creating psychological safety, managing conflict, and addressing tough issues directly.

  • Results: Measuring whether the team is achieving its goals and meeting the needs of its customers.

Explore Team Programs

Program 1

Set up a New Team

Structure and align your new team from day one with our comprehensive onboarding programme, establishing clear foundations for success.

Program 2

Fix a Broken Team

Diagnose and address deep-rooted issues with our data-driven interventions, restoring trust and rebuilding performance in struggling teams.

Program 3

Good to Great

Elevate already-functioning teams to exceptional performance through targeted coaching and advanced capability development.

About me

I’m an organisational psychologist, team development expert, psychometric assessment specialist, and executive coach with over 12 years experience helping leaders and their teams perform at their best. Accredited by the ICF (PCC), EMCC, and BPS, I bring evidence-based practices from behavioural science to design solutions that stick. My mission? To help teams achieve clarity, trust, and accountability so they can deliver results together that no one could achieve alone.

Assessment is at the heart of my work. Using robust, research-backed frameworks, I pinpoint where a team stands, where it needs to go, and how to bridge the gap. I turn data into stories and insights into action — shifting how teams think, relate, and perform in the real world. My style is warm, structured, and practical, with a dash of humour to keep even the toughest conversations human. I believe strong teams build strong businesses — and strong leaders never lead alone.

Living across Poland, New York, London, and Greece has shaped my perspective. Every culture showed me a new way of leading and connecting. The details may differ, but one truth is universal: high-performing teams don’t just happen — they’re built, nurtured, and launched with care.

Testimonials

“Sylvia challenges my thinking in a focused way, boosting my self-awareness and empowering me to act with purpose.”

Director (Middle East)

"Working with Sylvia Sideris as my executive coach has been transformative for me, both personally and professionally."

F&B Entrepreneur (US)

"Sylvia is a results-driven coach who combines assessments, profiling, and tailored strategies to help clients achieve lasting success."

EC Member (India)
"Sylvia led an inspiring workshop that introduced new perspectives to our team. We found the Rocket Model impactful and highly valuable."
MD (Poland)