Accounting Secretary (m/f)

The European school Brussels III is part of the "European Schools", an intergovernmental organisation offering multilingual and multicultural education.
Since opening its doors in 1999, the European School of Brussels III is committed to provide a high-level, multilingual and multicultural education.
Every day, pupils of different nationalities, allocated in seven language sections (German, English, French, Czech, Greek, Spanish, Dutch) stand alongside, discovering and sharing knowledges in an environment of respect, solidarity, tolerance and dialogue.
As in each European School, the words of Marcel Decombis (Director of the European School of Luxembourg between 1953 and 1960) which express the very essence of our mission, have been sealed in parchment into the foundation stones of the school: "(...) Educated side by side, untroubled from infancy by divisive prejudices, acquainted with all that is great and good in the different cultures, it will be borne in upon them as they mature that they belong together. Without ceasing to look to their own lands with love and pride, they will become in mind Europeans, schooled and ready to complete and consolidate the work of their fathers before them, to bring into being a united and thriving Europe."
Job description Reporting to the Deputy Director for Finance and Administration, the Secretary will be responsible for the following tasks:
Providing administrative, legal, and accounting support in relation to public procurement procedures;
Preparing (market analysis, organisation of meetings, needs assessment, drafting tender specifications, publication, contract award, etc.) and managing (responding to questions, analysing tenders, conducting negotiations, etc.) all assigned public procurement procedures;
Managing the legal aspects of ongoing contracts, including delays, non-performance, amendments, and other contractual matters;
Registering contracts in SAP;
Carrying out various accounting tasks and providing general support to the accounting function (data entry, verification, follow-up, management of supplier and client accounts);
Performing any other administrative or accounting duties assigned by the Deputy Director for Finance and Administration or the Director in order to ensure the continuity of services.
Able to work in a flexible manner and may be requested to temporarily fulfil other duties as directed by the School Management.
Profile At least an upper secondary school diploma supplemented by a qualification/training in secretarial studies, accounting or business administration, or a Bachelor's degree in one of these fields;
Previous experience in public procurement is considered an asset;
Excellent command of French and the ability to work independently in English; knowledge of another European language will be considered an advantage;
Excellent command of IT tools (Microsoft 365); knowledge of SAP is an asset;
Excellent communication skills;
Strong analytical and synthesis skills;
Strong problem-solving skills;
Excellent organisational and time management skills, with flexibility and the ability to meet deadlines;
High level of accuracy and attention to detail;
Ability to maintain confidentiality;
Ability to work independently as well as collaboratively within a team;
Proactive, with a strong sense of initiative
Offer Start date: September or October 2026
Contract: We offer a permanent part-time contract (18 hours 45 minutes per week), in accordance with Belgian legislation and the Statute for the Administrative and Ancillary Staff (AAS) of the European Schools (available at: /> Children of staff members may be eligible for enrolment in the European Schools, subject to the applicable admission rules.
Remuneration : Minimum gross monthly salary of 2.445,69 € based on a position corresponding to 18,75 hours per week. The exact grade and step will be determined according to the number of years of relevant experience and at the discretion of the school management.
Workplace : European School Brussels III - Boulevard du Triomphe, 135 / BE -1050 Brussels