Administrative & HR Manager - International scope

MARTENS DEMOCOM is a company active in industrial demolition that is expanding internationally. It is a human-sized subsidiary of the WANTY Group, a Belgian group operating internationally and specialized in infrastructure, demolition, construction, electricity, industry, circularity and water.

The organization combines strong local autonomy with regular interactions with the Group’s headquarters, in a context that requires rigor, sense of responsibility and pragmatism in support of teams and management.

As Administrative & HR Manager, you play a key role in the smooth operation of the subsidiary.

You are the main point of contact for administrative, HR and business support topics, with a clear objective: to ensure that matters are anticipated, structured and under control, enabling Management to move forward with confidence.

• Oversee and coordinate all administrative activities of the subsidiary.
• Structure, formalize and improve internal processes to ensure efficiency, compliance and reliability.
• Act as the main contact for administrative and organizational matters.

• Manage operational HR processes: recruitment, onboarding, contracts, absences, training and employee development.
• Pragmatically resolve cross-border employment issues with the support of external partners.
• Support Management and line managers in the day-to-day management of teams.
• Ensure HR reporting and monitoring of key indicators to the Group HR Director.
• Coordinate and supervise the person in charge of accounting to ensure the reliability of financial data.
• Participate in budget monitoring, expense control and internal reporting.
• Set up simple and relevant indicators to support decision‑making.
• Monitor performance indicators related to administration, HR and support activities.
• Propose and implement pragmatic organizational improvements.
• Ensure smooth communication with Group headquarters and operational managers.

• Ability to act as a “sparring partner” to the subsidiary’s management.
• Ability to handle sometimes complex administrative, HR and financial situations.
• Strong sense of priorities and constant focus on what matters most.
• Hands‑on approach with a controlled sense of urgency.
• Resilience, learning ability and calm under pressure.
• Willingness to address sensitive topics.
• Taste for collaborative work, transparency and authenticity.
• Service‑oriented leadership, focused on team support and collective efficiency.
• Desire to improve processes and contribute to a pragmatic change dynamic.

• Proven experience in an administrative role with HR responsibilities and a solid understanding of operational financial basics within an SME environment.
• Ability to supervise and coordinate a small team (administration, HR, accounting).
• Autonomy, rigor, organizational skills and pragmatism.
• Comfortable with office tools, HR software and reporting tools.
• Knowledge of French and Dutch is essential;
  English is an asset.

• A key and responsible role at the heart of the subsidiary’s operations.
• A collaborative environment with a high level of autonomy.
• The opportunity to have a tangible impact on the structuring and performance of the organization.
• A very attractive salary package with extra‑legal benefits.
• Position based in Genk, with organizational flexibility.

Please send your CV to