Architectural and engineering activities; technical testing and analysis: highest published revenue
695 Belgian companies in the sector (NACE 71) publish their revenue in recent accounts; here are the top 20. Siemens Industry Software leads with €353.6m (financial year 2025).
Top 20
Ranked by revenue published in the latest filed accounts (accounts less than 3 years old).
| # | Company | Total assets | Revenue | Equity | FTE | Year |
|---|---|---|---|---|---|---|
| 1 | Siemens Industry Software 3001 Leuven | €482.8m | €353.6m | €205.5m | 486.8 | 2025 |
| 2 | Tramardent 4020 Liège | €502.8m | €353.2m | €2.18m | — | 2025 |
| 3 | Tractebel Engineering 1000 Brussels | €350.5m | €332.1m | €176.4m | 1,326.4 | 2025 |
| 4 | Sweco 1000 Brussels | €286.7m | €315.2m | €73.8m | 1,951.9 | 2025 |
| 5 | DEME Infra 2070 Beveren-Kruibeke-Zwijndrecht | €402.5m | €295.5m | €6.53m | 78.6 | 2025 |
| 6 | SGS Belgium 2030 Antwerp | €159.0m | €243.6m | €41.2m | 1,394.7 | 2025 |
| 7 | TUC Rail 1060 Saint-Gilles | €124.1m | €182.1m | €24.9m | 730.6 | 2025 |
| 8 | Vyncke 8530 Harelbeke | €205.6m | €152.6m | €15.3m | 170.2 | 2025 |
| 9 | Arcadis Belgium 1000 Brussels | €131.7m | €140.1m | €43.4m | 774.8 | 2025 |
| 10 | Vincotte 1800 Vilvoorde | €55.6m | €136.1m | €21.7m | 973.0 | 2025 |
| 11 | Desmet Belgium 1831 Machelen (Brab.) | €183.5m | €126.8m | €53.5m | 129.0 | 2024 |
| 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 | Autosecurite - Bureau D'Etude ET DE Controle EN VUE DE LA Securite Routiere 4800 Verviers | €127.4m | €103.5m | €36.8m | 694.2 | 2025 |
| 15 | Akkodis Belgium 1702 Dilbeek | €22.8m | €99.0m | €2.55m | 676.6 | 2025 |
| 16 | STAR Group Belgium 2000 Antwerp | €29.1m | €95.3m | €15.9m | 273.0 | 2025 |
| 17 | Etex Services 1880 Kapelle-op-den-Bos | €61.2m | €93.1m | €30.8m | 209.7 | 2025 |
| 18 | Cobra Belgium 1050 Ixelles | €77.6m | €88.3m | −€7.90m | 35.0 | 2024 |
| 19 | Vestas Offshore Wind Belgium 8400 Ostend | €128.4m | €87.1m | €22.5m | 149.7 | 2024 |
| 20 | Trasis 4430 Ans | €94.7m | €80.4m | €55.9m | 327.6 | 2025 |
These are the revenue figures published in the annual accounts. Small companies (micro and abridged accounts) do not have to publish theirs: they do not appear in this ranking.
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Frequently asked questions
Which company in Architectural and engineering activities; technical testing and analysis has the highest revenue?
Siemens Industry Software, with €353.6m in revenue (financial year 2025).
How many Architectural and engineering activities; technical testing and analysis companies publish their revenue?
695 out of 15,900, in accounts less than 3 years old. Small companies (micro and abridged accounts) are not required to publish it.
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 30 Oct 2026.