Engineering activities and related technical consultancy: largest employers
1,285 Belgian companies in the sector (NACE 7112) 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 | Tractebel Engineering 1000 Brussels | €350.5m | €332.1m | €176.4m | 1,326.4 | 2025 |
| 3 | Arcadis Belgium 1000 Brussels | €131.7m | €140.1m | €43.4m | 774.8 | 2025 |
| 4 | TUC Rail 1060 Saint-Gilles | €124.1m | €182.1m | €24.9m | 730.6 | 2025 |
| 5 | Akkodis Belgium 1702 Dilbeek | €22.8m | €99.0m | €2.55m | 676.6 | 2025 |
| 6 | Siemens Industry Software 3001 Leuven | €482.8m | €353.6m | €205.5m | 486.8 | 2025 |
| 7 | Intercommunale pour la Gestion et la Réalisation d'Etudes Techniques et Economiques 6000 Charleroi | €692.3m | €105.7m | €127.2m | 387.6 | 2025 |
| 8 | Worley Belgique 2030 Antwerp | €34.4m | €67.9m | €16.0m | 369.4 | 2025 |
| 9 | Abylsen Belgium 1050 Brussels | €65.5m | €48.5m | €44.5m | 363.7 | 2025 |
| 10 | Trasis 4430 Ans | €94.7m | €80.4m | €55.9m | 327.6 | 2025 |
| 11 | Normec BTV 2600 Antwerp | €15.0m | €48.3m | €6.04m | 313.1 | 2025 |
| 12 | Engi Talents 8500 Kortrijk | €23.1m | €40.5m | €5.00m | 303.2 | 2025 |
| 13 | Elia Engineering 1000 Brussels | €25.9m | €51.3m | €15.4m | 284.6 | 2025 |
| 14 | STAR Group Belgium 2000 Antwerp | €29.1m | €95.3m | €15.9m | 273.0 | 2025 |
| 15 | Antea Belgium 2600 Antwerp | €35.7m | €39.1m | €16.5m | 233.1 | 2025 |
| 16 | TEC 2000 Antwerp | €9.20m | €38.6m | €3.59m | 221.1 | 2025 |
| 17 | Studiebureau voor Bouwkunde en Expertises 9100 Sint-Niklaas | €25.0m | €34.9m | €11.6m | 210.5 | 2025 |
| 18 | Etex Services 1880 Kapelle-op-den-Bos | €61.2m | €93.1m | €30.8m | 209.7 | 2025 |
| 19 | Inagro, provinciaal extern verzelfstandigd agentschap in privaatrechtelijke vorm 8800 Roeselare | €57.4m | €4.84m | €33.5m | 204.2 | 2025 |
| 20 | Nelson Labs 3001 Leuven | €769.0m | €41.3m | €595.3m | 202.5 | 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 Engineering activities and related technical consultancy?
Sweco, with 1,951.9 full-time equivalents reported (financial year 2025).
How many Engineering activities and related technical consultancy companies report employees?
1,285 out of 6,623, in accounts less than 3 years old.
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 11 Nov 2026.