# List of consulting firms in Wallonia Tamtam tracks 36 consulting firms headquartered in Wallonia. This list ranks all of them by number of employees on LinkedIn, led by freelance, NRB and NSI. Their median headcount is 31. Half of them were founded in 2004 or later. The most common headquarters are LiΓ¨ge (4), Louvain-la-Neuve (2) and Mons (2). This selection of consulting firms in Wallonia includes a notable concentration of IT services and IT consulting companies. Firms like NRB, NSI, and BHC offer a range of solutions from infrastructure management to ERP and AI implementation. Beyond IT, ADE provides independent policy advice to international institutions, while Group-IPS specializes in project management and engineering services for industrial clients. A clear pattern is the strong presence of IT consulting firms across various Walloon cities. Many of these companies, such as NRB founded in 1987 and NSI in 1993, have been established for several decades, indicating a mature sector. The headquarters are spread across locations like LiΓ¨ge, Awans, and Mons, rather than being concentrated in a single urban center. πŸ‡§πŸ‡ͺ Wallonia Β· 36 companies Β· Updated Nov 11, 2026 | # | Company | Industry | Headquarters | Employees | Founded | |---|---|---|---|---|---| | 1 | [freelance](https://www.tamtam.ai/c/freelance-chaumont-gistoux) (s11.be)
Specializing in customized ICT solutions, S11 provides managed infrastructure services, consultancy, and skilled consultants for long-term client relationships | IT Services and IT Consulting | πŸ‡§πŸ‡ͺ Chaumont-Gistoux | 13,672 | | | 2 | [NRB](https://www.tamtam.ai/c/nrb) (keyes.eu)
A leading ICT provider in Belgium, offering consultancy, software, infrastructure, cloud services, and staffing solutions across various sectors with state-of-the-art datacenters | IT Services and IT Consulting | πŸ‡§πŸ‡ͺ LiΓ¨ge | 1,357 | 1987 | | 3 | [NSI](https://www.tamtam.ai/c/nsi-awans) (groupensi.com)
Providing integrated IT solutions and high-value services including enterprise architecture, ERP, AI, mobile, e-commerce, and infrastructure management for businesses. | IT Services and IT Consulting | πŸ‡§πŸ‡ͺ Awans | 1,172 | 1993 | | 4 | [ADE - Evidence for Better Policy](https://www.tamtam.ai/c/ade-evidence-for-better-policy) (ade.eu)
Consultancy providing independent advice for international institutions and public organizations in policy design, implementation, and evaluation across various thematic areas | International Trade and Development | πŸ‡§πŸ‡ͺ Louvain-la-Neuve | 1,123 | 1990 | | 5 | [Group-IPS](https://www.tamtam.ai/c/group-ips) (group-ips.com)
Expert project management and engineering services supporting industrial projects across multiple sectors to streamline success and improve operational efficiency worldwide. | Engineering Services | πŸ‡§πŸ‡ͺ Nivelles | 391 | 1992 | | 6 | [BHC](https://www.tamtam.ai/c/bhc) (bhc.be)
An IT services provider based in Mons, specializing in end-to-end solutions, ERP software, customized software, and Open Source technologies like Odoo (OpenERP) | IT Services and IT Consulting | πŸ‡§πŸ‡ͺ Mons | 354 | 1998 | | 7 | [IGRETEC](https://www.tamtam.ai/c/igretec) (igretec.com)
IGRETEC specializes in providing a diverse range of services including urban planning, economic development, water and energy management, and participatory project methodologies | Government Administration | πŸ‡§πŸ‡ͺ Charleroi | 284 | 1946 | | 8 | [NRB International Organisations (TRASYS)](https://www.tamtam.ai/c/nrb-international-organisations-trasys) (trasysinternational.com)
Specialized ICT provider offering IT solutions and consulting for International Public and Corporate Organizations, focusing on compliance, digital transformation, and efficiency | IT Services and IT Consulting | πŸ‡§πŸ‡ͺ Herstal | 244 | 2017 | | 9 | [GDTech Group](https://www.tamtam.ai/c/gdtech-group) (gdtech-group.com)
Integrated service provider for product development, specializing in design, numerical analysis, validation, and manufacturing across various industries with a focus on quality and flexibility | Engineering Services | πŸ‡§πŸ‡ͺ LiΓ¨ge | 207 | 1998 | | 10 | [Wavenet Belgium](https://www.tamtam.ai/c/wavenet-belgium) (wavenet.be)
Providing IT consulting, custom software development, maintenance, support, and training with expertise in web, telecom, business intelligence, and big data solutions. | IT Services and IT Consulting | πŸ‡§πŸ‡ͺ Leuze-en-Hainaut | 204 | 1999 | | 11 | [UGARIT](https://www.tamtam.ai/c/ugarit) (ugarit.tech)
A software development company with expertise in networking and security solutions, creating tailored architectures for optimal performance and protection | Software Development | πŸ‡§πŸ‡ͺ Aubange | 56 | 2016 | | 12 | [B12 Consulting](https://www.tamtam.ai/c/b12-consulting) (b12-consulting.com)
Specializing in artificial intelligence, data science, and custom software development, we provide innovative IT solutions for a variety of industries worldwide | IT Services and IT Consulting | πŸ‡§πŸ‡ͺ Louvain-la-Neuve | 42 | 2012 | | 13 | [ARGAFIN](https://www.tamtam.ai/c/argafin) (argafin.com)
Financial management consulting firm specializing in assisting SMEs and start-ups with development, optimization, profitability, and implementing financial performance monitoring tools | Financial Services | πŸ‡§πŸ‡ͺ Ottignies-Louvain-la-Neuve | 41 | 2015 | | 14 | [INFORIUS](https://www.tamtam.ai/c/inforius) (inforius.be)
Specialized IT consulting, technical audits, project feasibility studies, network infrastructure design, project management assistance, and tailored IT solutions for administrations. | IT Services and IT Consulting | πŸ‡§πŸ‡ͺ Isnes | 41 | | | 15 | [CEBEDEAU](https://www.tamtam.ai/c/cebedeau) (cebedeau.be)
Specializing in managing and treating domestic and industrial wastewater through biological and physicochemical methods, offering expertise, services, research, and training in sustainable water management | Environmental Services | πŸ‡§πŸ‡ͺ LiΓ¨ge | 39 | 1947 | | 16 | [Myrmidons](https://www.tamtam.ai/c/myrmidons) (myrmidons.net)
Offering top-tier IT services through a unique approach focusing on coaching and facilitation, rather than just providing human resources, to make team members shine | IT Services and IT Consulting | πŸ‡§πŸ‡ͺ Namur | 37 | 2018 | | 17 | [XYPII](https://www.tamtam.ai/c/xypii) (xypii.be)
An Ottignies-based engineer specializes in developing websites and applications, prioritizing customer advice to deliver solutions to end users | Software Development | πŸ‡§πŸ‡ͺ Ottignies | 31 | 2013 | | 18 | [Quimesis Engineering your ideas](https://www.tamtam.ai/c/quimesis-engineering-your-ideas) (quimesis.be)
Quimesis specializes in helping customers bring their innovative ideas to life by providing support in feasibility studies, prototyping, validation, and production of technological products | Computers and Electronics Manufacturing | πŸ‡§πŸ‡ͺ Wavre | 31 | 2013 | | 19 | [Nalios](https://www.tamtam.ai/c/nalios) (nalios.com)
We support SMEs in saving time and generating growth with Odoo, a powerful and intuitive integrated business management software Operating in Belgium, Switzerland, and France with a vision to become the European leader in Odoo integration Also, offering free, French-language Odoo training through our academy and providing additional resources via our YouTube channel | IT Services and IT Consulting | πŸ‡§πŸ‡ͺ Namur | 30 | 2020 | | 20 | [DVC-CO](https://www.tamtam.ai/c/dvc-co) (dvc-co.com)
A company founded in 1987 providing unique solutions through feasibility studies, product design, programming, certification, industrialization, and production for clients in Europe | Appliances, Electrical, and Electronics Manufacturing | πŸ‡§πŸ‡ͺ Nivelles | 24 | 1987 | | 21 | [Mielabelo](https://www.tamtam.ai/c/mielabelo) (mielabelo.be)
Operational consulting focused on enhancing organizational agility and performance through governance, information security, operational excellence, and quality management. | Business Consulting and Services | πŸ‡§πŸ‡ͺ Mons | 23 | 2009 | | 22 | [TETRADE Consulting](https://www.tamtam.ai/c/tetrade-consulting) (tetrade.be)
A consulting firm specializing in ERP systems and digital technology for utilities and manufacturing companies, focusing on process optimization and IT system support | IT Services and IT Consulting | πŸ‡§πŸ‡ͺ Wavre | 19 | 2000 | | 23 | [IDMC](https://www.tamtam.ai/c/idmc) (idm-c.com)
Specializing in information management, IDMC provides solutions to help accelerate businesses by supporting executives with all their needs, both professional and personal | Business Consulting and Services | πŸ‡§πŸ‡ͺ La Hulpe | 17 | 1987 | | 24 | [Ingenum](https://www.tamtam.ai/c/ingenum) (ingenum.be)
Ingenum is a Belgian consulting firm specialized in software development, offering analysis, advice, and implementation of web, mobile, and desktop applications | Software Development | πŸ‡§πŸ‡ͺ MaisiΓ¨res | 16 | 2018 | | 25 | [Sapristic](https://www.tamtam.ai/c/sapristic) (sapristic.com)
Specializing in healthcare digital transformation, our company integrates EPR solutions, provides SAP consulting services, and develops customized solutions for data migration and system interfacing | IT Services and IT Consulting | πŸ‡§πŸ‡ͺ Louvain-la-Neuve | 16 | 2014 | | 26 | [De Roo & Partners Expertises by Studibo](https://www.tamtam.ai/c/de-roo-and-partners-expertises-by-studibo) (derooexpertises.be)
An expertise bureau founded in 1996, now known as De Roo & Partners, specializing in assessments for insurance companies in Belgium | Insurance | πŸ‡§πŸ‡ͺ Verviers | 16 | 1996 | | 27 | [Listen SA](https://www.tamtam.ai/c/listen-sa) (listen.eu)
Market research and consultancy firm specializing in listening to customers, employees, and citizens to provide pragmatic guidance and support in decision-making processes for various sectors | Market Research | πŸ‡§πŸ‡ͺ Hognoul | 15 | 2004 | | 28 | [Incidence](https://www.tamtam.ai/c/incidence) (incidence.be)
A market research consultancy providing tailored solutions for small to medium businesses in various sectors, offering operational insights typically reserved for larger corporations | Market Research | πŸ‡§πŸ‡ͺ Limal | 12 | 2013 | | 29 | [IntPact](https://www.tamtam.ai/c/intpact) (intpact.com)
IntPact assists industrial companies in detecting threats and opportunities, providing targeted insights for less risky decision-making and enhancing intelligence capabilities through tailored solutions | Business Consulting and Services | πŸ‡§πŸ‡ͺ LiΓ¨ge | 11 | 2018 | | 30 | [OROXILIA](https://www.tamtam.ai/c/oroxilia) (oroxilia.com)
IT solutions provider specializing in warehouse, order, shipment, and transport management, as well as e-commerce platforms Accredited Blue Yonder partner serving BENELUX and France | Transportation, Logistics, Supply Chain and Storage | πŸ‡§πŸ‡ͺ Enghien-Edingen | 11 | 2016 | | 31 | [E-nova](https://www.tamtam.ai/c/e-nova) (e-nova.be)
Specializing in energy efficiency, renewable energy, and sustainable energy practices, our expert engineers assist in designing and implementing energy projects for clients | Engineering Services | πŸ‡§πŸ‡ͺ Dour | 6 | 2004 | | 32 | [Creaction INT](https://www.tamtam.ai/c/creaction-int)
A consulting firm specializing in technology transfer, innovation management, project support, and workshops for developing and qualifying innovative solutions | Strategic Management Services | πŸ‡§πŸ‡ͺ Redu | 5 | 1988 | | 33 | [CTI Consulting](https://www.tamtam.ai/c/cti-consulting) (cticonsulting.be)
A multidisciplinary team of consultants helping organizations strategically leverage digital opportunities through digital transformation, legal tech compliance, information security, and training | Business Consulting and Services | πŸ‡§πŸ‡ͺ Seraing | 5 | 2017 | | 34 | [dantes - ImPertinent Business](https://www.tamtam.ai/c/dantes-impertinent-business) (dantes.pro)
This company aligns business goals with team members' personal aspirations, focusing on core competencies to drive motivation, ambition, autonomy, and career fulfillment | Business Consulting and Services | πŸ‡§πŸ‡ͺ Longchamps | 3 | 1999 | | 35 | [PROJECTIF](https://www.tamtam.ai/c/projectif) (projectif.be)
The company offers tailored coaching and facilitation services in team management, lean management, family business governance, and business succession planning | Business Consulting and Services | πŸ‡§πŸ‡ͺ Soiron | 2 | 1997 | | 36 | [ITOps Consultancy](https://www.tamtam.ai/c/itops-consultancy) (itops.be)
The company offers a range of IT services including CRM and ERP implementation, IT infrastructure maintenance, Data Science expertise, and web development | IT Services and IT Consulting | πŸ‡§πŸ‡ͺ Anderlues | 2 | 2017 | ## How this list is built Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 11, 2026. ## More company lists in Wallonia - [The largest companies in Wallonia](https://www.tamtam.ai/l/largest-companies-wallonia) (1,106) - [Multinational companies in Wallonia](https://www.tamtam.ai/l/multinational-companies-wallonia) (234) - [Companies with in-house R&D in Wallonia](https://www.tamtam.ai/l/r-and-d-companies-wallonia) (155) - [Manufacturers in Wallonia](https://www.tamtam.ai/l/manufacturers-wallonia) (151) - [Retail chains in Wallonia](https://www.tamtam.ai/l/retail-chains-wallonia) (110) - [Family-owned companies in Wallonia](https://www.tamtam.ai/l/family-owned-companies-wallonia) (82) - [Hardware manufacturers in Wallonia](https://www.tamtam.ai/l/hardware-companies-wallonia) (75) - [Food and Beverage Manufacturing companies in Wallonia](https://www.tamtam.ai/l/food-and-beverage-manufacturing-companies-wallonia) (75) - [IT Services and IT Consulting companies in Wallonia](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-wallonia) (67) - [IT services companies in Wallonia](https://www.tamtam.ai/l/it-services-companies-wallonia) (67) - [Critical infrastructure operators in Wallonia](https://www.tamtam.ai/l/critical-infrastructure-operators-wallonia) (65) - [Consumer goods companies in Wallonia](https://www.tamtam.ai/l/consumer-goods-companies-wallonia) (59) - [Software Development companies in Wallonia](https://www.tamtam.ai/l/software-development-companies-wallonia) (58) - [Transportation, Logistics, Supply Chain and Storage companies in Wallonia](https://www.tamtam.ai/l/transportation-logistics-supply-chain-and-storage-companies-wallonia) (57) - [SaaS companies in Wallonia](https://www.tamtam.ai/l/saas-companies-wallonia) (54) - [Retail companies in Wallonia](https://www.tamtam.ai/l/retail-companies-wallonia) (52) - [Contract manufacturers in Wallonia](https://www.tamtam.ai/l/contract-manufacturers-wallonia) (51) - [Chemical companies in Wallonia](https://www.tamtam.ai/l/chemical-companies-wallonia) (45) - [Pharmaceutical companies in Wallonia](https://www.tamtam.ai/l/pharmaceutical-companies-wallonia) (45) - [Aerospace and defence companies in Wallonia](https://www.tamtam.ai/l/aerospace-and-defense-companies-wallonia) (44) - [Education providers in Wallonia](https://www.tamtam.ai/l/education-companies-wallonia) (43) - [Financial services firms in Wallonia](https://www.tamtam.ai/l/financial-services-firms-wallonia) (41) - [Distributors and wholesalers in Wallonia](https://www.tamtam.ai/l/distributors-and-wholesalers-wallonia) (39) - [Food and beverage companies in Wallonia](https://www.tamtam.ai/l/food-and-beverage-companies-wallonia) (38) ## The same list elsewhere in Belgium - [Consulting firms in Belgium](https://www.tamtam.ai/l/consulting-firms-belgium) (285) - [Consulting firms in Flanders](https://www.tamtam.ai/l/consulting-firms-flanders) (172) - [Consulting firms in Brussels](https://www.tamtam.ai/l/consulting-firms-brussels) (52) - [Consulting firms in Antwerp](https://www.tamtam.ai/l/consulting-firms-antwerp) (29) --- Source: https://www.tamtam.ai/l/consulting-firms-wallonia