Ondersteunende Diensten Medewerker (Medior)

Rhox; Schaarbeek; On-site; EUR 34,000 - 48,000; Full time

Job summary

Rhox is seeking a mid-level administrative support officer in Brussels to organize governance meetings, coordinate suppliers, and support budget follow-up. The role blends event organisation, procurement administration and office logistics.

The candidate will manage minutes, invoices, and internal communications, while supporting onboarding and staff wellbeing initiatives across the organization.

Qualifications

• Three years of experience in an administrative role.
• One year in a similar role within a federal public service.
• Knowledge of public procurement legislation.
• Four years coordinating and supporting third parties and external stakeholders.
• Experience organizing events for more than 100 people.
• Experience maintaining SharePoint pages.

Responsibilities

• Organise management meetings, including minutes and participant follow-up.
• Check and code invoices against contracts, flagging budget deviations.
• Monitor purchasing procedures, legal calendars and formal correspondence.
• Support onboarding, offboarding, wellbeing initiatives and organisational charts.
• Maintain SharePoint pages for internal communications.
• Coordinate office supplies, facilities services and related contracts.

Skills

Administrative experience

Event planning

Budget coordination

Communication skills

Discretion

Education

Bachelor's degree in administration or communications

Tools

MS Office (PowerPoint, Excel, Word)

SharePoint

Job description

We're looking for a mid-level administrative support officer to organise governance meetings, coordinate suppliers and support budget follow-up. The work combines event organisation, procurement administration and office logistics.

What you'll do

• Organise management meetings, including minutes and participant follow-up.
• Check and code invoices against contracts, flagging budget deviations.
• Monitor purchasing procedures, legal calendars and formal correspondence.
• Support onboarding, offboarding, wellbeing initiatives and organisational charts.
• Maintain SharePoint pages for internal communications.
• Coordinate office supplies, facilities services and related contracts.

What you bring

• Three years of experience in an administrative role.
• One year in a similar role within a federal public service.
• Knowledge of public procurement legislation.
• Four years coordinating and supporting third parties and external stakeholders.
• Communication skills to inform staff and external stakeholders through appropriate channels.
• Four years checking and coding invoices against contracts.
• Four years organising meetings, taking minutes and arranging events.
• Experience organising events for more than 100 people.
• Four years using PowerPoint, Excel and Word, alongside broader MS Office skills.
• Experience in the energy sector.
• Experience maintaining SharePoint pages.
• Experience supporting office supplies and building logistics.
• Ability to maintain schedules and follow up planned activities.
• A relevant bachelor's degree, such as communication or administration.
• Ability to work proactively and independently, with discretion.
• Dutch or French, B2.
• English, C1.

Good to know

• Occasional travel to other offices or third-party premises may be required.