The role
We are looking for a proactive and highly organised Office Administrator to help keep our Brussels office running smoothly. You’ll be at the heart of our daily operations, supporting colleagues, coordinating logistics and helping to create a professional working environment.
In this role, you will:
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Coordinate our office operations
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Reception duties
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Liaise with building management and ensure office facilities run smoothly
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Order, manage and restock office supplies
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Provide first-line IT support
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Act as the main contact with our external IT provider
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Set up new computers and equipment
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Deal with simple IT questions from colleagues
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Support event management
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Book hotels and transport
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Send invitations and manage follow-up
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Provide on-site support during in-person events (logistics, registration, technical help, etc.)
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Handle ad hoc administrative tasks as needed to support the wider team
What you’ll bring (minimum requirements)
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A Bachelor’s degree
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At least 3 years’ relevant work experience, ideally in an office management or administrative position
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Expert knowledge of the Microsoft Office suite
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Basic knowledge of IT set-up
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Graphic design experience is not essential but a definite plus
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Excellent organisational skills and a practical, can-do mindset
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Excellent communication skills
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Fluency in French and English
Who will thrive in this role?
You enjoy variety, can juggle multiple priorities and like solving problems as they arise. You’re comfortable working both independently and as part of a team, and you bring a positive attitude to your work. A naturally proactive person with a good sense of humour will do well in this role.
What we offer
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Supportive, collaborative culture with minimal hierarchy and colleagues from 25+ nationalities.
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A great office environment.
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Biennial company retreats.
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An organisation that values environmental protection and puts this into practice. Milieu is proud to possess the 3-star Ecodynamic Organisation Label from Brussels Environment.
Deadline
1 January 2026. Only shortlisted candidates will be contacted. Interviews will take place in early January.
