Ranking · Flanders · NACE 71
Architectural and engineering activities; technical testing and analysis: highest revenue in Flanders
As of 12 Nov 2026, 290 companies in Architectural and engineering activities; technical testing and analysis (NACE 71) in Flanders publish their revenue in recent accounts (financial years 2023 to 2026). The top 10 account for €1.70bn, out of €4.27bn for all of them; median revenue is €1.40m. Siemens Industry Software leads with €353.6m (financial year 2025).
Top 50 · Architectural and engineering activities; technical testing and analysis · Flanders
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 | DEME Infra 2070 Beveren-Kruibeke-Zwijndrecht | €402.5m | €295.5m | €6.53m | 78.6 | 2025 |
| 3 | SGS Belgium 2030 Antwerp | €159.0m | €243.6m | €41.2m | 1,394.7 | 2025 |
| 4 | Vyncke 8530 Harelbeke | €205.6m | €152.6m | €15.3m | 170.2 | 2025 |
| 5 | Vincotte 1800 Vilvoorde | €55.6m | €136.1m | €21.7m | 973.0 | 2025 |
| 6 | Desmet Belgium 1831 Machelen (Brab.) | €183.5m | €126.8m | €53.5m | 129.0 | 2024 |
| 7 | Laboratoire belge de l'Industrie Electrique 1630 Linkebeek | €80.2m | €106.1m | €21.8m | 393.5 | 2025 |
| 8 | Akkodis Belgium 1702 Dilbeek | €22.8m | €99.0m | €2.55m | 676.6 | 2025 |
| 9 | STAR Group Belgium 2000 Antwerp | €29.1m | €95.3m | €15.9m | 273.0 | 2025 |
| 10 | Etex Services 1880 Kapelle-op-den-Bos | €61.2m | €93.1m | €30.8m | 209.7 | 2025 |
| 11 | Vestas Offshore Wind Belgium 8400 Ostend | €128.4m | €87.1m | €22.5m | 149.7 | 2024 |
| 12 | Vinçotte 1800 Vilvoorde | €39.3m | €76.2m | €25.1m | 317.4 | 2025 |
| 13 | Septentrio 3001 Leuven | €89.9m | €74.9m | €76.7m | 120.8 | 2025 |
| 14 | GEO.XYZ 8550 Zwevegem | €32.4m | €71.5m | €9.65m | 97.8 | 2025 |
| 15 | Worley Belgique 2030 Antwerp | €34.4m | €67.9m | €16.0m | 369.4 | 2025 |
| 16 | Autoveiligheid 2800 Mechelen | €29.4m | €64.0m | €7.69m | 530.1 | 2025 |
| 17 | Redwire Space 9150 Beveren-Kruibeke-Zwijndrecht | €45.5m | €50.4m | €1.17m | 140.7 | 2025 |
| 18 | Normec BTV 2600 Antwerp | €15.0m | €48.3m | €6.04m | 313.1 | 2025 |
| 19 | Keuringsbureau Motorvoertuigen 8400 Ostend | €33.4m | €45.8m | €14.6m | 351.6 | 2025 |
| 20 | Studiebureel voor Automobieltransport 9051 Ghent | €35.0m | €45.2m | €21.6m | 355.7 | 2025 |
| 21 | Programme Europeen pour l'Evaluation d'Automobiles Neuves - European New Car Assessment Programme 3000 Leuven | €13.4m | €43.9m | €4.17m | 9.6 | 2025 |
| 22 | Nelson Labs 3001 Leuven | €769.0m | €41.3m | €595.3m | 202.5 | 2025 |
| 23 | Witteveen+Bos Belgium 2600 Antwerp | €13.0m | €40.9m | €5.92m | 174.2 | 2025 |
| 24 | Engi Talents 8500 Kortrijk | €23.1m | €40.5m | €5.00m | 303.2 | 2025 |
| 25 | Antea Belgium 2600 Antwerp | €35.7m | €39.1m | €16.5m | 233.1 | 2025 |
| 26 | TEC 2000 Antwerp | €9.20m | €38.6m | €3.59m | 221.1 | 2025 |
| 27 | ACEG 1853 Grimbergen | €15.7m | €38.5m | €1.37m | 18.0 | 2025 |
| 28 | Camco Technologies 3001 Leuven | €40.2m | €37.4m | €5.84m | 170.4 | 2025 |
| 29 | Icos Vision Systems 3001 Leuven | €47.5m | €36.6m | €36.3m | 130.0 | 2025 |
| 30 | Allego België 2800 Mechelen | €34.9m | €36.2m | €9.69m | 6.8 | 2025 |
| 31 | Tormans BV 2440 Geel | €20.6m | €36.2m | €16.5m | 114.7 | 2025 |
| 32 | Studiebureau voor Bouwkunde en Expertises 9100 Sint-Niklaas | €25.0m | €34.9m | €11.6m | 210.5 | 2025 |
| 33 | AmSpec Belgium 2040 Antwerp | €19.7m | €34.6m | −€5.45m | 233.2 | 2025 |
| 34 | West-Vlaamse Intercommunale 8200 Bruges | €241.0m | €34.2m | €133.5m | 103.6 | 2025 |
| 35 | ASM Belgium 3001 Leuven | €43.8m | €33.5m | €32.9m | 92.3 | 2025 |
| 36 | Netwerk 2018 Antwerp | €6.02m | €32.2m | 955,855 € | 110.4 | 2025 |
| 37 | Wimble Services Belgium 2800 Mechelen | €46.9m | €32.1m | €33.4m | 69.9 | 2025 |
| 38 | Aecom Belgium 3000 Leuven | €11.1m | €30.6m | €3.47m | 53.8 | 2025 |
| 39 | Exosens Imaging Belgium 3001 Leuven | €39.1m | €29.7m | €5.69m | 67.7 | 2025 |
| 40 | Bureau Voor Technische Controle 2100 Antwerp | €63.1m | €28.6m | €34.9m | 204.3 | 2025 |
| 41 | Promat Research and Technology Centre 2830 Willebroek | €12.0m | €27.3m | €2.92m | 33.8 | 2025 |
| 42 | Onderzoekscentrum voor Aanwending van Staal 9060 Zelzate | €51.1m | €26.7m | €41.1m | 151.2 | 2025 |
| 43 | Algemene Certificaten voor Elektriciteit & Gas 1853 Grimbergen | €9.47m | €26.7m | €1.12m | 198.3 | 2025 |
| 44 | Fluor Engineering 2030 Antwerp | €20.7m | €26.3m | €13.5m | 104.8 | 2025 |
| 45 | ICsense 3001 Leuven | €20.1m | €25.7m | €13.1m | 104.0 | 2026 |
| 46 | NXP Semiconductors Belgium 3001 Leuven | €15.8m | €25.7m | €4.37m | 112.2 | 2025 |
| 47 | Exact Forestall 3600 Genk | €7.06m | €25.2m | €1.62m | 53.9 | 2025 |
| 48 | Onafhankelijk Controle Bureel 2550 Kontich | €38.5m | €25.1m | €23.1m | 164.7 | 2025 |
| 49 | Normec Servaco 8560 Wevelgem | €17.3m | €24.2m | €6.31m | 171.4 | 2025 |
| 50 | Aellia Belgium 2490 Balen | €15.6m | €23.5m | €5.74m | 78.7 | 2025 |
Ranking based on each company's own annual accounts (statutory, not consolidated): a subsidiary and its parent appear separately, and the ranking differs from lists based on consolidated group accounts. 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.
Architectural and engineering activities; technical testing and analysis across Belgium → All sectors · Flanders →
Other sectors · Flanders
- 01 Crop and animal production, hunting and related service activities202
- 08 Other mining and quarrying23
- 10 Manufacture of food products505
- 11 Manufacture of beverages47
- 13 Manufacture of textiles114
- 14 Manufacture of wearing apparel23
- 16 Manufacture of wood and of products of wood and cork, except furniture; manufacture of articles of straw and plaiting materials66
- 17 Manufacture of paper and paper products58
- 18 Printing and reproduction of recorded media75
- 20 Manufacture of chemicals and chemical products205
- 21 Manufacture of basic pharmaceutical products and pharmaceutical preparations30
- 22 Manufacture of rubber and plastic products153
- 23 Manufacture of other non-metallic mineral products151
- 24 Manufacture of basic metals72
- 25 Manufacture of fabricated metal products, except machinery and equipment348
- 26 Manufacture of computer, electronic and optical products96
- 27 Manufacture of electrical equipment63
- 28 Manufacture of machinery and equipment n.e.c.164
- 29 Manufacture of motor vehicles, trailers and semi-trailers58
- 30 Manufacture of other transport equipment22
- 31 Manufacture of furniture74
- 32 Other manufacturing73
- 33 Repair, maintenance and installation of machinery and equipment130
- 35 Electricity, gas, steam and air conditioning supply146
- 37 Sewerage18
- 38 Waste collection, recovery and disposal activities156
- 41 Construction of residential and non-residential buildings882
- 42 Civil engineering222
- 43 Specialised construction activities1,342
- 46 Wholesale trade2,896
- 47 Retail trade1,541
- 49 Land transport and transport via pipelines790
- 50 Water transport49
- 51 Air transport17
- 52 Warehousing, storage and support activities for transportation466
- 53 Postal and courier activities50
- 55 Accommodation105
- 56 Food and beverage service activities498
- 58 Publishing activities55
- 59 Motion picture, video and television programme production, sound recording and music publishing activities67
- 60 Programming, broadcasting, news agency and other content distribution activities10
- 61 Telecommunication45
- 62 Computer programming, consultancy and related activities1,005
- 63 Computing infrastructure, data processing, hosting and other information service activities57
- 64 Financial service activities, except insurance and pension funding1,457
- 66 Activities auxiliary to financial services and insurance activities150
- 68 Real estate activities1,138
- 69 Legal and accounting activities292
- 70 Activities of head offices and management consultancy1,100
- 72 Scientific research and development43
- 73 Activities of advertising, market research and public relations207
- 74 Other professional, scientific and technical activities72
- 75 Veterinary activities20
- 77 Rental and leasing activities175
- 78 Employment activities135
- 79 Travel agency, tour operator and other reservation service and related activities43
- 80 Investigation and security activities25
- 81 Services to buildings and landscape activities261
- 82 Office administrative, office support and other business support activities336
- 84 Public administration and defence; compulsory social security24
- 85 Education463
- 86 Human health activities385
- 87 Residential care activities346
- 88 Social work activities without accommodation243
- 90 Arts creation and performing arts activities180
- 91 Libraries, archives, museums and other cultural activities19
- 93 Sports activities and amusement and recreation activities144
- 94 Activities of membership organisations109
- 95 Repair and maintenance of computers, personal and household goods, and motor vehicles and motorcycles185
- 96 Personal service activities211
Municipalities with the most companies in the sector · Flanders
Frequently asked questions
Which company in Architectural and engineering activities; technical testing and analysis in Flanders has the highest revenue?
Siemens Industry Software, with €353.6m of published revenue (financial year 2025).
Why are some companies missing?
Small companies (micro and abridged accounts) do not have to publish their revenue: only the 290 that publish it, out of 9,980 companies in the sector in the area, are ranked.
Why does this ranking differ from other lists?
It uses each company's annual accounts as filed with the National Bank, not consolidated group accounts. A holding, a subsidiary or a purchasing entity can therefore appear separately. Only companies whose latest accounts are less than 3 years old are ranked.
Idonis
Analyse companies · Flanders
Filter these companies by size, soundness and trend, follow them and get an alert when their accounts or publications change.
Open the full file →Free account in 30 seconds, by email. No bank card.
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.