Engineering activities and related technical consultancy: highest published revenue
366 Belgian companies in the sector (NACE 7112) 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 | TUC Rail 1060 Saint-Gilles | €124.1m | €182.1m | €24.9m | 730.6 | 2025 |
| 7 | Vyncke 8530 Harelbeke | €205.6m | €152.6m | €15.3m | 170.2 | 2025 |
| 8 | Arcadis Belgium 1000 Brussels | €131.7m | €140.1m | €43.4m | 774.8 | 2025 |
| 9 | Desmet Belgium 1831 Machelen (Brab.) | €183.5m | €126.8m | €53.5m | 129.0 | 2024 |
| 10 | Intercommunale pour la Gestion et la Réalisation d'Etudes Techniques et Economiques 6000 Charleroi | €692.3m | €105.7m | €127.2m | 387.6 | 2025 |
| 11 | Akkodis Belgium 1702 Dilbeek | €22.8m | €99.0m | €2.55m | 676.6 | 2025 |
| 12 | STAR Group Belgium 2000 Antwerp | €29.1m | €95.3m | €15.9m | 273.0 | 2025 |
| 13 | Etex Services 1880 Kapelle-op-den-Bos | €61.2m | €93.1m | €30.8m | 209.7 | 2025 |
| 14 | Vestas Offshore Wind Belgium 8400 Ostend | €128.4m | €87.1m | €22.5m | 149.7 | 2024 |
| 15 | Trasis 4430 Ans | €94.7m | €80.4m | €55.9m | 327.6 | 2025 |
| 16 | Westinghouse Electric Belgium 1400 Nivelles | €83.1m | €77.1m | €20.1m | 129.0 | 2025 |
| 17 | Septentrio 3001 Leuven | €89.9m | €74.9m | €76.7m | 120.8 | 2025 |
| 18 | Luminus Solutions 1210 Saint-Josse-ten-Noode | €28.3m | €73.1m | €9.41m | 33.6 | 2025 |
| 19 | GEO.XYZ 8550 Zwevegem | €32.4m | €71.5m | €9.65m | 97.8 | 2025 |
| 20 | Worley Belgique 2030 Antwerp | €34.4m | €67.9m | €16.0m | 369.4 | 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 Engineering activities and related technical consultancy has the highest revenue?
Siemens Industry Software, with €353.6m in revenue (financial year 2025).
How many Engineering activities and related technical consultancy companies publish their revenue?
366 out of 6,623, in accounts less than 3 years old. Small companies (micro and abridged accounts) are not required to publish it.
Analyse companies in Engineering activities and related technical consultancy
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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 12 Nov 2026.