Our Team

Koen Mees

CEO

Koen is an expert in sustainability and energy management. With his strategic vision and hands-on approach, he helps companies optimise energy use and manage sustainable real estate. Under his leadership, Freestone continues to grow as a trusted partner for future-proof and efficient buildings.

Koen focuses strongly on long-term value creation, translating sustainability ambitions into concrete and measurable results. With a pragmatic mindset, ensuring that sustainability is not just a goal, but a practical and economically viable reality for clients. His leadership is driven by quality, innovation and impact, guiding organisations through the complex challenges of energy transition and sustainable real estate management.

Michael Do​om

Real Estate Manager

Michael Doom leads Freestone’s Real Estate team with a rare combination of strategic clarity, technical depth and calm oversight. As Team Manager Real Estate, he supports both clients and colleagues across complex real estate trajectories — from strategic planning and masterplans to DBFM projects, renovations and new ways of working.

With extensive experience in construction and renovation, Michael brings structure and direction to projects where budgets, timelines and stakeholders intersect. He maintains a clear overview, even in the most demanding contexts, and translates complexity into actionable strategies.

Eva Simons

PA/HR & Marketing

Eva is the creative heart of Freestone. She translates strategy into strong, purposeful content, builds campaigns with lasting impact and brings structure to every communication flow. Her role sits at the intersection of communication, sales and employer-focused HR, where branding, people and growth come together.

With years of experience in marketing, events and storytelling, Eva elevates Freestone’s brand across channels and touchpoints. She combines creativity with strong commercial awareness and organisational skills, ensuring that every message is clear, warm and impactful — and always aligned with Freestone’s strategic ambitions.

Wesley Polling

Team Manager EPC-EMS

Wesley is a versatile technical expert with a broad skill set spanning HVAC, energy, audits, technical installations and project management. With his wide-ranging expertise and high level of energy, he plays a key role in strengthening Freestone’s EPC and Energy Management Services teams.

He combines strong technical precision with excellent people skills, enabling smooth collaboration across teams and stakeholders. Wesley is known for his structured, forward-looking and highly professional approach, consistently helping projects progress efficiently and with confidence.

Michiel Villé

Team Manager Building & Sustainability

Michiel is a senior technical expert with a strong focus on sustainable buildings, HVAC systems and energy efficiency. He brings structure and clarity to complex technical files, ensuring that engineering choices and sustainability ambitions are fully aligned.

With extensive expertise in HVAC engineering, renovation studies, energy performance analyses and project follow-up, Michiel is a trusted advisor on large and technically demanding trajectories. Known for his no-nonsense approach, he keeps a clear overview at all times and translates technical complexity into practical, reliable solutions.

Jan Muyldermans

Advisor | Building & Sustainability

Jan is the technical backbone of the Freestone team. With decades of experience in building inspections, technical installations, condition assessments and maintenance planning, he identifies every detail that matters — often even the ones others might overlook.

He is a recognised expert in NEN 2767, technical inspections and building management, known for his calm, precise and solution-oriented approach. Jan’s extensive technical knowledge supports both strategic decision-making and day-to-day operations, helping Freestone deliver reliable, well-founded insights on every project.