Architectural and engineering activities; technical testing and analysis: largest employers
2,839 Belgian companies in the sector (NACE 71) report employees in recent accounts; here are the top 20. Sweco leads with 1,951.9 FTE (financial year 2025).
Top 20
Ranked by average headcount (FTE) reported in the latest filed accounts (accounts less than 3 years old).
| # | Company | Total assets | Revenue | Equity | FTE | Year |
|---|---|---|---|---|---|---|
| 1 | Sweco 1000 Brussels | €286.7m | €315.2m | €73.8m | 1,951.9 | 2025 |
| 2 | SGS Belgium 2030 Antwerp | €159.0m | €243.6m | €41.2m | 1,394.7 | 2025 |
| 3 | Tractebel Engineering 1000 Brussels | €350.5m | €332.1m | €176.4m | 1,326.4 | 2025 |
| 4 | Vincotte 1800 Vilvoorde | €55.6m | €136.1m | €21.7m | 973.0 | 2025 |
| 5 | Arcadis Belgium 1000 Brussels | €131.7m | €140.1m | €43.4m | 774.8 | 2025 |
| 6 | TUC Rail 1060 Saint-Gilles | €124.1m | €182.1m | €24.9m | 730.6 | 2025 |
| 7 | Autosecurite - Bureau D'Etude ET DE Controle EN VUE DE LA Securite Routiere 4800 Verviers | €127.4m | €103.5m | €36.8m | 694.2 | 2025 |
| 8 | Akkodis Belgium 1702 Dilbeek | €22.8m | €99.0m | €2.55m | 676.6 | 2025 |
| 9 | Autoveiligheid 2800 Mechelen | €29.4m | €64.0m | €7.69m | 530.1 | 2025 |
| 10 | Siemens Industry Software 3001 Leuven | €482.8m | €353.6m | €205.5m | 486.8 | 2025 |
| 11 | A.I.B.V. 1070 Anderlecht | €35.5m | €50.6m | €20.6m | 416.9 | 2025 |
| 12 | Laboratoire belge de l'Industrie Electrique 1630 Linkebeek | €80.2m | €106.1m | €21.8m | 393.5 | 2025 |
| 13 | Intercommunale pour la Gestion et la Réalisation d'Etudes Techniques et Economiques 6000 Charleroi | €692.3m | €105.7m | €127.2m | 387.6 | 2025 |
| 14 | Worley Belgique 2030 Antwerp | €34.4m | €67.9m | €16.0m | 369.4 | 2025 |
| 15 | Abylsen Belgium 1050 Brussels | €65.5m | €48.5m | €44.5m | 363.7 | 2025 |
| 16 | Studiebureel Voor Automobieltransport 9051 Ghent | €35.0m | €45.2m | €21.6m | 355.7 | 2025 |
| 17 | Keuringsbureau Motorvoertuigen 8400 Ostend | €33.4m | €45.8m | €14.6m | 351.6 | 2025 |
| 18 | Trasis 4430 Ans | €94.7m | €80.4m | €55.9m | 327.6 | 2025 |
| 19 | Vinçotte 1800 Vilvoorde | €39.3m | €76.2m | €25.1m | 317.4 | 2025 |
| 20 | Normec BTV 2600 Antwerp | €15.0m | €48.3m | €6.04m | 313.1 | 2025 |
Headcount reported by the company for all its sites: the jobs may be located elsewhere.
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Frequently asked questions
Who is the largest employer in Architectural and engineering activities; technical testing and analysis?
Sweco, with 1,951.9 full-time equivalents reported (financial year 2025).
How many Architectural and engineering activities; technical testing and analysis companies report employees?
2,839 out of 15,903, in accounts less than 3 years old.
Analyse companies in Architectural and engineering activities; technical testing and analysis
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Open the full file →Active companies (legal entities) that have filed at least one set of annual accounts, based on the Crossroads Bank for Enterprises and the National Bank of Belgium. The sector is the main activity in the register; the municipality is that of the registered office. Data updated on 03 Nov 2026.