Chief of Staff

AION Consulting is not a traditional consulting firm.

We are building an entrepreneurial, liberated and demanding consulting firm inspired by the principles of the Liberated Company: autonomy, accountability and collective ambition replace traditional hierarchical management models.

We advise large corporations, public institutions, investment funds, scale-ups and SMEs on strategy, transformation, governance and operational performance.

Our conviction is simple: strategy only creates value when it translates into execution.

As we continue to grow across Belgium, France and Luxembourg, we are looking for a Chief of Staff to join our Brussels team and play a central role in the coordination, development and professionalisation of the firm.

This is a highly transversal position at the intersection of people, business operations, strategic coordination, governance and company development. Working closely with the leadership team, you will help ensure that the organisation runs smoothly while supporting the execution of its strategic priorities.

Your role

As Chief of Staff, you will act as a central coordination point for the firm and a key support to the leadership team, with significant autonomy and direct interaction with consultants, managers, clients, partners and external stakeholders.

The role combines four dimensions:

People & Organisation Business Operations Strategic Coordination & Governance Company Development & External Relations

1. People & Organisation

You will help ensure that our consultants and employees have the support, information and follow-up they need.

• Act as a coordination point for consultants on operational and administrative matters.
• Coordinate and follow up on timesheets, holidays, absences and other key administrative processes.
• Support onboarding and offboarding processes.
• Coordinate information between consultants, management and external HR/payroll partners.
• Support recruitment processes, including interview coordination, candidate communication and onboarding.
• Contribute to improving our people processes and employee experience.

You will ensure that the right information reaches the right person at the right time and that nothing falls through the cracks.

2. Business Operations & Client Coordination

You will help maintain a clear overview of our consulting activity and ensure that projects and related processes run smoothly.

• Maintain an overview of ongoing missions, priorities, deadlines and key actions.
• Follow up on project status, deliverables and client actions.
• Monitor project costs, expenses, and ensure appropriate documentation and allocation.
• Coordinate information required for client invoicing and follow up on outstanding POs, timesheets, documents and payments.
• Maintain operational dashboards and reporting.
• Coordinate operational exchanges with clients and external stakeholders.
• Identify issues, ensure appropriate escalation and follow through to resolution.
• Contribute to the continuous improvement and automation of internal processes.

The objective is not simply to track information, but to make sure that actions are actually completed.

3. Strategic Coordination & Governance

Beyond day-to-day operations, you will play an active role in the strategic coordination and development of AION.

Working closely with the leadership team, you will help turn priorities and decisions into coordinated action.

• Support the preparation and coordination of strategic priorities and initiatives.
• Prepare strategic reports, management updates, dashboards and decision-making materials.
• Consolidate information across the organisation to provide visibility on performance, priorities, risks and opportunities.
• Prepare management meetings, strategic reviews and internal governance meetings.
• Follow up on strategic decisions and ensure that agreed actions are implemented.
• Support annual planning, budgeting, business reviews and strategic planning processes.
• Contribute to the development of AION's governance and operating model.

You will also support the professionalisation of our governance processes:

• Prepare and coordinate Board and Advisory Board meetings.
• Coordinate agendas, presentations and supporting materials.
• Consolidate inputs from stakeholders and ensure high-quality documentation.
• Prepare minutes, decision logs and action trackers.
• Follow up on Board and governance decisions and commitments.
• Support quarterly and annual company reviews.

4. Company Development & Strategic Partnerships

AION's development relies on strong re