Marc Siles
Strategy Consultant
Executive & Leadership Coach
Marc Siles
Strategy Consultant
Executive & Leadership Coach
Marc is a strategic leadership expert who helps organizations co-create growth strategies, build high-performing leadership teams, and turn disciplined execution into a competitive edge. He thrives on ambitious projects that challenge the status quo and develop future-ready cultures.

Vision
Unlock the full potential of workplaces by cultivating leaders and teams that set new standards of excellence.
Mission
Help companies and professionals reach new levels of performance by aligning strategy with strengths, fostering collaboration, and creating customer-focused, growth-driven cultures.
My Experience
With over 10,000 hours of coaching and consulting, Marc has supported global companies such as Finnair, Santander, Abloy, Blue Lagoon, Elkem, Jotun, Össur, and Smartly, as well as public institutions across Europe.
Marc’s Growth Agents™ program, recognized for its innovative approach to talent development, helped Orkuveita Reykjavíkur receive the Menntasproti ársins award presented by the President of Iceland.
Having worked with leaders from 25+ nationalities and delivered programs across Europe, North America, and Asia, Marc combines global experience with a human-centric mindset to help teams achieve measurable, lasting growth.
Postgraduate in Coaching and Work Orientation (UOC)
Growth Mindset Master Coach Certified
The Mindset Strategist MST Oy
2014- CEO and founder
Santander Consumer Finance Oy
2010-2014 D2C Director - Personal Loans, Insurances and CRM
2007-2010 CFO
General Electric (GE Money Oy)
2006-2007 Black Belt PMO / Pricing Manager (Finland)
2005-2006 Finance Project Leader (Italy)
2003-2005 Financial Analyst (Finland)
La Caixa de Pensions (Spain)
2001 -2002 Customer Service
Unlocking workplace excellence
Our Leadership and strategy development programs have touched thousands of leaders, and increased their leadership capabilities with, on-avarage 27% across all critical leadership skills.
Enduring values are the heartbeat of lasting impact.
They are in the heart of everything I do.
Partnership
We combine your business knowledge with my expertise to create strategies and solutions that deliver measurable, meaningful impact.
Sustainability
Every framework and solution is built for the long term, so your organization can adapt, grow, and thrive well into the future.
Ethical Growth
Success matters only when it’s achieved with integrity. I help leaders align decisions with their values to benefit their organization, their people, and the world.
Marc Siles
Strategy Consultant
Executive & Leadership Coach