Architectural and engineering activities; technical testing and analysis: the largest employers in Hainaut
As of 12 Nov 2026, 186 companies in Architectural and engineering activities; technical testing and analysis (NACE 71) in Hainaut report employees in recent accounts (financial years 2023 to 2026). The 10 largest employers account for 1,274.9 FTE, out of 2,029.3 for all of them; median headcount is 2 FTE. Intercommunale pour la Gestion et la Réalisation d'Etudes Techniques et Economiques leads with 387.6 FTE (financial year 2025).
Top 50 · Architectural and engineering activities; technical testing and analysis · Hainaut
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 | Intercommunale pour la Gestion et la Réalisation d'Etudes Techniques et Economiques 6000 Charleroi | €692.3m | €105.7m | €127.2m | 387.6 | 2025 |
| 2 | Quality Assistance 6536 Thuin | €55.5m | €31.7m | €28.4m | 256.8 | 2025 |
| 3 | Henogen 6041 Charleroi | €97.2m | €48.7m | −€4.55m | 244.5 | 2025 |
| 4 | Sinoma Cbmi Belgium Engineering 7034 Mons | €11.5m | — | −€2.17m | 93.3 | 2025 |
| 5 | Compagnie Financiere de Travaux Publics et Agregats 7134 Binche | €90.9m | €8.87m | €28.5m | 72.3 | 2025 |
| 6 | Mecotec 7011 Mons | €2.51m | — | 348,840 € | 62.7 | 2024 |
| 7 | Centre technologique international de la Terre et de la Pierre 7500 Tournai | €7.95m | — | €6.07m | 43.4 | 2025 |
| 8 | Ekium Belgium 6040 Charleroi | €5.21m | — | €2.47m | 42.8 | 2025 |
| 9 | CoCEPTIO 7000 Mons | €6.12m | — | €4.00m | 35.8 | 2025 |
| 10 | Institut interuniversitaire des Silicates, Sols et Matériaux 7000 Mons | €4.69m | €6.73m | 220,255 € | 35.7 | 2025 |
| 11 | Centre de Ressources Technologiques en Chimie 7180 Seneffe | €9.46m | — | €5.57m | 30.5 | 2025 |
| 12 | Hygiene & Expertise 7730 Estaimpuis | €4.38m | — | €1.08m | 30.1 | 2025 |
| 13 | Forwise 6221 Fleurus | €2.13m | — | 555,561 € | 28.3 | 2025 |
| 14 | Redebel 6221 Fleurus | €2.90m | — | 467,731 € | 24.2 | 2025 |
| 15 | Studycoach 7331 Saint-Ghislain | €1.63m | — | −€1.18m | 24.2 | 2023 |
| 16 | Les Lacs de l'Eau d'Heure 6440 Froidchapelle | €23.0m | 392,071 € | €12.8m | 24.1 | 2025 |
| 17 | a-ULaB 6041 Charleroi | 667,308 € | — | 55,094 € | 17.8 | 2025 |
| 18 | Calyos 6040 Charleroi | €4.43m | — | €3.59m | 17.3 | 2025 |
| 19 | Corepro 6000 Charleroi | €3.11m | — | €1.45m | 16.8 | 2025 |
| 20 | Hensafe Consulting 7000 Mons | 968,171 € | — | 377,719 € | 15.8 | 2025 |
| 21 | Cadastre et Inspection Télévisuelle des réseaux 7503 Tournai | €2.78m | €2.24m | 926,541 € | 15.6 | 2025 |
| 22 | Bureau d'Etudes Pirnay 6030 Charleroi | €3.30m | — | €1.13m | 15.2 | 2025 |
| 23 | MY Engineering 7100 La Louvière | €1.44m | — | 471,536 € | 14.5 | 2025 |
| 24 | Industrie et Developpement 6240 Farciennes | €8.32m | — | €7.43m | 14.1 | 2025 |
| 25 | Delta Services Industriels 7503 Tournai | €5.09m | — | €2.95m | 13.7 | 2026 |
| 26 | Atelier d'Architecture DR (EA)²M 6230 Pont-à-Celles | €1.38m | — | 189,778 € | 12.4 | 2025 |
| 27 | CBConseil 6150 Anderlues | €1.16m | — | 20,460 € | 10.8 | 2025 |
| 28 | Vision Architecture 6030 Charleroi | 752,536 € | — | 289,844 € | 10.7 | 2025 |
| 29 | Burotech Consulting 7140 Morlanwelz | 907,066 € | — | 170,105 € | 10.3 | 2025 |
| 30 | Parent 7322 Bernissart | 615,901 € | — | 93,862 € | 10.3 | 2025 |
| 31 | Atenas Belgium 7880 Flobecq | €1.19m | — | 831,624 € | 10.2 | 2025 |
| 32 | Rovi - Tech 6250 Aiseau-Presles | €1.79m | — | €1.22m | 9.8 | 2025 |
| 33 | Poly - Tech Engineering 6030 Charleroi | €2.21m | — | 386,856 € | 9.8 | 2025 |
| 34 | Fally & Associes 6534 Thuin | €1.48m | — | 651,657 € | 9.6 | 2025 |
| 35 | Isis Belgique 7700 Mouscron | 221,924 € | — | 147,189 € | 9.0 | 2025 |
| 36 | Vertconcept 7830 Silly | 872,785 € | — | 48,625 € | 8.8 | 2025 |
| 37 | Sainatech 6010 Charleroi | 285,311 € | — | −692,638 € | 8.4 | 2025 |
| 38 | 3D Topo 6140 Fontaine-l'Évêque | 531,672 € | — | 336,056 € | 8.3 | 2024 |
| 39 | E-Nova 7370 Dour | 662,390 € | 748,763 € | 195,218 € | 8.2 | 2025 |
| 40 | Acoustic Technologies 6041 Charleroi | €1.15m | — | 417,603 € | 8.0 | 2025 |
| 41 | Bureau d'Etudes DG ENGINEERING 7180 Seneffe | 407,591 € | — | 225,286 € | 7.9 | 2025 |
| 42 | De² Engineering 7160 Chapelle-lez-Herlaimont | 357,809 € | — | 134,844 € | 7.5 | 2025 |
| 43 | Apitrees 7911 Frasnes-lez-Anvaing | 253,142 € | — | 50,826 € | 7.3 | 2025 |
| 44 | Durot 7522 Tournai | 745,646 € | — | 384,947 € | 7.3 | 2025 |
| 45 | Planeo Architecture 6220 Fleurus | 283,792 € | — | 20,460 € | 7.0 | 2025 |
| 46 | Cubeta Group 7301 Boussu | 242,530 € | — | −94,165 € | 7.0 | 2023 |
| 47 | Sensorea 7000 Mons | 641,130 € | — | 291,720 € | 6.7 | 2025 |
| 48 | Arcea 7000 Mons | €1.05m | — | 530,988 € | 6.7 | 2025 |
| 49 | Engineer Concept 7911 Frasnes-lez-Anvaing | 872,709 € | — | 721,032 € | 6.3 | 2025 |
| 50 | Van Royen & Associes 7011 Mons | €1.24m | €1.17m | 462,909 € | 6.3 | 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. Headcount reported by the company for all its sites: the jobs may be located elsewhere.
“—”: not published. Small companies (micro and abridged accounts) do not have to publish their revenue.
Architectural and engineering activities; technical testing and analysis across Belgium → All sectors · Hainaut →
Other sectors · Hainaut
- 01 Crop and animal production, hunting and related service activities202
- 02 Forestry and logging21
- 08 Other mining and quarrying15
- 10 Manufacture of food products289
- 11 Manufacture of beverages27
- 13 Manufacture of textiles38
- 14 Manufacture of wearing apparel10
- 16 Manufacture of wood and of products of wood and cork, except furniture; manufacture of articles of straw and plaiting materials46
- 17 Manufacture of paper and paper products19
- 18 Printing and reproduction of recorded media48
- 20 Manufacture of chemicals and chemical products68
- 21 Manufacture of basic pharmaceutical products and pharmaceutical preparations17
- 22 Manufacture of rubber and plastic products50
- 23 Manufacture of other non-metallic mineral products103
- 24 Manufacture of basic metals37
- 25 Manufacture of fabricated metal products, except machinery and equipment271
- 26 Manufacture of computer, electronic and optical products14
- 27 Manufacture of electrical equipment18
- 28 Manufacture of machinery and equipment n.e.c.58
- 29 Manufacture of motor vehicles, trailers and semi-trailers13
- 31 Manufacture of furniture35
- 32 Other manufacturing49
- 33 Repair, maintenance and installation of machinery and equipment93
- 35 Electricity, gas, steam and air conditioning supply12
- 37 Sewerage11
- 38 Waste collection, recovery and disposal activities71
- 41 Construction of residential and non-residential buildings508
- 42 Civil engineering76
- 43 Specialised construction activities1,384
- 46 Wholesale trade913
- 47 Retail trade2,002
- 49 Land transport and transport via pipelines321
- 52 Warehousing, storage and support activities for transportation74
- 53 Postal and courier activities21
- 55 Accommodation77
- 56 Food and beverage service activities1,123
- 58 Publishing activities15
- 59 Motion picture, video and television programme production, sound recording and music publishing activities21
- 61 Telecommunication13
- 62 Computer programming, consultancy and related activities179
- 63 Computing infrastructure, data processing, hosting and other information service activities17
- 64 Financial service activities, except insurance and pension funding138
- 66 Activities auxiliary to financial services and insurance activities343
- 68 Real estate activities351
- 69 Legal and accounting activities523
- 70 Activities of head offices and management consultancy246
- 72 Scientific research and development36
- 73 Activities of advertising, market research and public relations69
- 74 Other professional, scientific and technical activities29
- 75 Veterinary activities54
- 77 Rental and leasing activities44
- 78 Employment activities29
- 79 Travel agency, tour operator and other reservation service and related activities51
- 80 Investigation and security activities13
- 81 Services to buildings and landscape activities216
- 82 Office administrative, office support and other business support activities83
- 85 Education199
- 86 Human health activities560
- 87 Residential care activities269
- 88 Social work activities without accommodation130
- 90 Arts creation and performing arts activities41
- 91 Libraries, archives, museums and other cultural activities14
- 92 Gambling and betting activities12
- 93 Sports activities and amusement and recreation activities128
- 94 Activities of membership organisations60
- 95 Repair and maintenance of computers, personal and household goods, and motor vehicles and motorcycles152
- 96 Personal service activities265
Municipalities with the most companies in the sector · Hainaut
- 7000 Mons58
- 7500 Tournai (Ere, Saint-Maur)47
- 7100 La Louvière (Haine-Saint-Paul, Haine-Saint-Pierre, Saint-Vaast, …)25
- 6120 Ham-sur-Heure-Nalinnes (Cour-Sur-Heure, Ham-Sur-Heure, Jamioulx, …)24
- 6230 Pont-à-Celles (Buzet, Obaix, Thiméon, …)22
- 7700 Mouscron (Luingne)21
- 6000 Charleroi20
- 7850 Enghien (Marcq, Petit-Enghien)20
- 7181 Seneffe (Arquennes, Familleureux, Feluy, …)18
- 6001 Charleroi (Marcinelle)17
- 7090 Braine-le-Comte (Hennuyères, Henripont, Petit-Roeulx-Lez-Braine, …)17
- 7370 Dour (Blaugies, Elouges, Wihéries)17
Frequently asked questions
Which is the largest employer in Architectural and engineering activities; technical testing and analysis in Hainaut?
Among companies, Intercommunale pour la Gestion et la Réalisation d'Etudes Techniques et Economiques, with 387.6 full-time equivalents reported (financial year 2025).
Are all the jobs located in the area?
Not necessarily: headcount is reported by the company for all its sites, and the company is ranked by the address of its registered office. 186 out of 1,027 companies in the sector report employees there.
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.
Analyse companies · Hainaut
Filter these companies by size, soundness and trend, follow them and get an alert when their accounts or publications change.
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.