Administration & Finance Assistant

Your Role

We – tHRee – are looking for a precise and structured Administrative & Financial Assistant for the Groot-Bijgaarden site.

In this support role, you are at the heart of administrative coordination for technical projects, ensuring that all document flows are managed correctly, on time and in line with internal and external standards.

Your Responsibilities

• Managing incoming/outgoing project documentation (plans, contracts, technical annexes)

• Formatting and numbering documents according to project/client standards

• Filing and structuring digital files via SharePoint or other DMS

• Maintaining Excel document logs (dates, versions, revisions, statuses)

• Uploading/distributing documents via client/supplier portals

• Supporting project teams with planning, reporting and correspondence

• Shared responsibility for fleet management and contract follow-up

• Liaising with the payroll provider and following up HR/payroll documentation

• Ensuring completeness, version control and traceability of all documentation

Your Profile

• Very strong command of French and Dutch, both spoken and written. Good knowledge of English.

• Proficient in Office 365 (Outlook, Word, Excel, SharePoint, Teams)

• Strong communication skills, detail-oriented and dependable

• Structured and autonomous, with a proactive mindset

• Experience in a technical or project-based environment is a plus

• Familiarity with document management systems (DMS) and technical files is an asset

What We Offer

• A full-time position in a company with international scope

• A permanent contract with a salary aligned with your profile

• A small, close-knit team (±12 colleagues in Belgium)

• Flexible working hours and a pleasant office in Groot-Bijgaarden

• Room for initiative, autonomy and growth

• Daily collaboration with a multidisciplinary technical team

• Opportunities to grow into project administration, DMS or contract coordination