About

About

Marc Siles

Strategy Consultant
Executive & Leadership Coach

Who is marc

Who is marc

Who is marc

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.

Mature man with glasses and a trimmed beard smiling confidently, standing in warm natural light against a modern backdrop.
Mature man with glasses and a trimmed beard smiling confidently, standing in warm natural light against a modern backdrop.
Mature man with glasses and a trimmed beard smiling confidently, standing in warm natural light against a modern backdrop.

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.

Who is marc

Who is marc

Who is marc

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.

UK Map
UK Map
UK Map

BACKGROUND

BACKGROUND

BACKGROUND

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

Our Impact

Our Impact

Our Impact

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.

30+

Companies supported

30+

Companies supported

30+

Companies supported

1000+

Leaders trained

1000+

Leaders trained

1000+

Leaders trained

27%

Avg. increase in critical skills

27%

Avg. increase in critical skills

27%

Avg. increase in critical 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.

Mature man with glasses and a trimmed beard smiling confidently, standing in warm natural light against a modern backdrop.
Signature
Mature man with glasses and a trimmed beard smiling confidently, standing in warm natural light against a modern backdrop.
Signature
Mature man with glasses and a trimmed beard smiling confidently, standing in warm natural light against a modern backdrop.
Signature

Marc Siles

Strategy Consultant
Executive & Leadership Coach