# The 100 largest professional services firms in Flanders Tamtam tracks 263 professional services firms headquartered in Flanders. This list ranks the 100 largest by number of employees on LinkedIn, led by House of HR, Cegeka and delaware International. Their median headcount is 427. Half of them were founded in 1995 or later. The most common headquarters are Antwerp (20), Kortrijk (10) and Ghent (6). These are professional services firms in Flanders, many of them large employers. Human resources and IT services are prominent. House of HR provides staffing solutions across various industries, while Cegeka and delaware International offer IT solutions and business transformation services. Deloitte Belgium and KPMG Belgium are significant players in management and business consulting. A notable pattern is the concentration of headquarters in Kortrijk, which hosts House of HR, delaware International, delaware BeLux, House Of Talents BE, and AGO Jobs & HR. Zaventem also features prominently, with Deloitte Belgium, KPMG Belgium, Orizio Group, and BDO Belgium. πŸ‡§πŸ‡ͺ Flanders Β· 100 companies Β· Updated Nov 11, 2026 | # | Company | Industry | Headquarters | Employees | Founded | |---|---|---|---|---|---| | 1 | [House of HR](https://www.tamtam.ai/c/house-of-hr) (houseofhr.com)
Provides skilled professionals and specialized staffing solutions across industries, including engineering, consulting, digital recruitment, and permanent placements. | Human Resources Services | πŸ‡§πŸ‡ͺ Kortrijk | 8,123 | | | 2 | [Cegeka](https://www.tamtam.ai/c/cegeka) (cegeka.com)
A family-owned IT solutions provider focused on creating personalized customer experiences, aiming to become the leading European orchestrator of digital business platforms | IT Services and IT Consulting | πŸ‡§πŸ‡ͺ Hasselt | 5,167 | 1992 | | 3 | [delaware International](https://www.tamtam.ai/c/delaware-international) (delaware.pro)
Provides advanced business transformation solutions and services using SAP and Microsoft ecosystems, ensuring continuous improvement and sustainability. | IT Services and IT Consulting | πŸ‡§πŸ‡ͺ Kortrijk | 3,291 | 2003 | | 4 | [Deloitte Belgium](https://www.tamtam.ai/c/deloitte-belgium) (deloitte.com)
A leading audit and consulting practice in Belgium offering services in audit, accounting, tax, consulting, and financial advisory to national and international clients | Management Consulting | πŸ‡§πŸ‡ͺ Zaventem | 2,840 | 1953 | | 5 | [Accent Jobs](https://www.tamtam.ai/c/accent-jobs) (accentjobs.be)
Personalized recruitment services connecting job seekers and companies with flexible, permanent, local, and international job opportunities efficiently. | Human Resources Services | πŸ‡§πŸ‡ͺ Roeselare | 1,940 | 1995 | | 6 | [delaware BeLux](https://www.tamtam.ai/c/delaware-belux) (delaware.pro)
Global provider of advanced IT solutions and services, guiding organizations through business and digital transformations with a focus on innovation, technology, and sustainability | IT Services and IT Consulting | πŸ‡§πŸ‡ͺ Kortrijk | 1,875 | 2003 | | 7 | [KPMG Belgium](https://www.tamtam.ai/c/kpmg-belgium) (kpmg.com)
Helping organizations harness data to drive digitalization, manage risk, optimize costs, and stay relevant through technology, innovation, and compliance | Business Consulting and Services | πŸ‡§πŸ‡ͺ Zaventem | 1,721 | | | 8 | [Orizio Group](https://www.tamtam.ai/c/orizio-group) (orizio-group.com)
International aerospace ecosystem focusing on design, manufacturing, maintenance, and engineering services for aviation, space, and UAV markets through specialized high-tech subsidiary companies. | Aviation and Aerospace Component Manufacturing | πŸ‡§πŸ‡ͺ Zaventem | 1,609 | 2020 | | 9 | [PwC Belgium](https://www.tamtam.ai/c/pwc-belgium) (pwc.be)
Global network committed to solving important problems, building trust, and providing quality assurance, advisory, and tax services in 156 countries | Accounting | πŸ‡§πŸ‡ͺ Diegem | 1,594 | | | 10 | [VinΓ§otte](https://www.tamtam.ai/c/vincotte) (vincotte.be)
It offers objective advisory services in inspection, certification, conformity assessment, and training, contributing to a safer, more efficient society for businesses and individuals. | Public Safety | πŸ‡§πŸ‡ͺ Vilvoorde | 1,504 | 1872 | | 11 | [House Of Talents BE](https://www.tamtam.ai/c/house-of-talents-be) (houseoftalents.be)
Specializing in matching candidates to job opportunities and filling client vacancies, this service group employs over 1,000 people across 13 specialized talents | Human Resources Services | πŸ‡§πŸ‡ͺ Kortrijk | 1,359 | 2008 | | 12 | [Randstad Belgium](https://www.tamtam.ai/c/randstad-belgium) (randstad.be)
Specializes in temporary staffing, ICT, engineering, life sciences, HR, finance, sales, and offers HR services like outplacement and assessments. | Human Resources Services | πŸ‡§πŸ‡ͺ Strombeek-Bever | 1,176 | 1965 | | 13 | [AGO Jobs & HR](https://www.tamtam.ai/c/ago-jobs-and-hr) (ago.jobs)
Provides nationwide HR services with specialized divisions, focusing on authentic relationships and employees speaking clients' language sincerely and constructively. | Human Resources Services | πŸ‡§πŸ‡ͺ Kortrijk | 1,091 | 1986 | | 14 | [RMC](https://www.tamtam.ai/c/rmc) (rmconsulting.be)
Specializing in Oracle E-Business Suite and Oracle Cloud applications, we provide implementation, consulting, training, upgrades, business intelligence solutions, and maintenance support services | IT Services and IT Consulting | πŸ‡§πŸ‡ͺ Kontich | 988 | 2000 | | 15 | [BDO Belgium](https://www.tamtam.ai/c/bdo-belgium) (bdo.be)
Providing audit, tax, legal, accounting, and advisory services with a personal approach, local presence, and global expertise for sustainable growth. | Business Consulting and Services | πŸ‡§πŸ‡ͺ Zaventem | 987 | 1967 | | 16 | [Logi-technic](https://www.tamtam.ai/c/logi-technic) (logi-technic.be)
Passionate problem solvers at a technical outsourcing agency tackling challenges with enthusiasm and expertise | Industrial Machinery Manufacturing | πŸ‡§πŸ‡ͺ Jabbeke | 864 | | | 17 | [MIDES](https://www.tamtam.ai/c/mides) (mides.be)
MIDES is an engineering firm providing technical project support, designing installations, managing projects, and offering maintenance management services | Industrial Machinery Manufacturing | πŸ‡§πŸ‡ͺ Roeselare | 841 | 1995 | | 18 | [Actief Interim](https://www.tamtam.ai/c/actief-interim) (actief.be)
Recruitment partner focusing on local, personal connections between companies and candidates, emphasizing sustainable growth and responsible business practices. | Staffing and Recruiting | πŸ‡§πŸ‡ͺ Lummen | 839 | 1988 | | 19 | [QbD Group](https://www.tamtam.ai/c/qbd-group) (qbdgroup.com)
Support life science companies globally with regulatory, clinical, quality assurance, validation, software, and go-to-market services for medical products. | Business Consulting and Services | πŸ‡§πŸ‡ͺ Antwerp | 834 | 2011 | | 20 | [Inetum-Realdolmen](https://www.tamtam.ai/c/inetum-realdolmen) (inetum.com)
Specialized professionals guide over 800 customers worldwide in post-digital transformation, offering digital technology and innovation to optimize positive digital flow | IT Services and IT Consulting | πŸ‡§πŸ‡ͺ Huizingen | 831 | | | 21 | [9altitudes](https://www.tamtam.ai/c/9altitudes) (9altitudes.com)
End-to-end integrator specializing in ERP, PLM, DMS, and data solutions Improving business performance by deploying technological solutions and optimizing processes | IT Services and IT Consulting | πŸ‡§πŸ‡ͺ Kortrijk | 824 | 2000 | | 22 | [Copus](https://www.tamtam.ai/c/copus) (copus.group)
HR group spreading joy of work, focusing on matching skilled talent with employers in technical, construction, and office roles through warm relationships | Human Resources Services | πŸ‡§πŸ‡ͺ Antwerp | 804 | 1991 | | 23 | [United Consultingβ„’](https://www.tamtam.ai/c/united-consulting) (unitedconsulting.be)
We specialize in attracting top talent in Finance, Business Support, HR, Supply Chain, and Marketing, focusing on personal growth and success stories | Business Consulting and Services | πŸ‡§πŸ‡ͺ Niel | 787 | 1998 | | 24 | [GRITT](https://www.tamtam.ai/c/gritt) (gritt.be)
A team of dedicated technical experts providing outsourcing services for specialized technicians, engineering consultants, and turnkey infrastructure projects | Outsourcing and Offshoring Consulting | πŸ‡§πŸ‡ͺ Antwerp | 759 | | | 25 | [Attentia](https://www.tamtam.ai/c/attentia) (attentia.be)
This company provides HR advice focused on well-being, protection, and prevention, finding optimal solutions for individuals and employing over 800 people | Human Resources Services | πŸ‡§πŸ‡ͺ Ghent | 739 | 2006 | | 26 | [Projective Group](https://www.tamtam.ai/c/projective-group) (projectivegroup.com)
Specialist in delivering holistic and pragmatic change solutions for clients within the Financial Services industry to thrive. | Financial Services | πŸ‡§πŸ‡ͺ Diegem | 725 | | | 27 | [VGD](https://www.tamtam.ai/c/vgd) (vgd.eu)
A knowledgeable partner supporting Flemish entrepreneurs with a wide range of business questions using proactive expertise and international connections | Financial Services | πŸ‡§πŸ‡ͺ Wemmel | 688 | 1981 | | 28 | [Vanbreda Risk & Benefits](https://www.tamtam.ai/c/vanbreda-risk-and-benefits) (vanbreda.be)
A leading insurance broker in the Benelux with 85 years of experience, offering tailor-made solutions for businesses and individuals worldwide | Insurance | πŸ‡§πŸ‡ͺ Antwerp | 673 | 1937 | | 29 | [Bright Plus](https://www.tamtam.ai/c/bright-plus) (brightplus.be)
Expertise in multilingual labor market, providing transparent, honest recruitment advice to find suitable talent for permanent or project roles. | Staffing and Recruiting | πŸ‡§πŸ‡ͺ Vilvoorde | 643 | | | 30 | [BCCL](https://www.tamtam.ai/c/bccl) (bccl.be)
Specializing in consultancy, coaching, and tailored training programs for operational staff and middle management with a practical and direct approach Also offering logistics training with accredited partners | Transportation, Logistics, Supply Chain and Storage | πŸ‡§πŸ‡ͺ Ghent | 630 | 1997 | | 31 | [SBB Accountants & Advisors](https://www.tamtam.ai/c/sbb-accountants-and-advisors) (sbb.be)
Accounting firm providing bookkeeping, taxation, environmental regulation support, strategic advice, and ICT-backed services for businesses at all stages. | Financial Services | πŸ‡§πŸ‡ͺ Leuven | 590 | 1971 | | 32 | [Vandelanotte](https://www.tamtam.ai/c/vandelanotte) (vandelanotte.be)
A multidisciplinary team offering accountancy, audit, tax, legal, corporate finance, HR solutions, estate planning, cyber security, subsidy advice, and risk management services | Business Consulting and Services | πŸ‡§πŸ‡ͺ Kortrijk | 587 | 1948 | | 33 | [Human8](https://www.tamtam.ai/c/human8) (wearehuman8.com)
A human-driven consultancy that connects brands with people and culture to drive positive change, with a team of +900 across 23 locations worldwide | Market Research | πŸ‡§πŸ‡ͺ Ghent | 587 | | | 34 | [AE](https://www.tamtam.ai/c/ae) (ae.be)
Consultancy specializing in digital transformation, providing seamless ICT solutions to help organizations achieve business objectives through customer-focused, practical advice and pragmatic solutions | IT Services and IT Consulting | πŸ‡§πŸ‡ͺ Heverlee | 586 | 1999 | | 35 | [Sabena Engineering](https://www.tamtam.ai/c/sabena-engineering) (sabena-engineering.com)
International MRO provider for Commercial Aviation and Government/Defense markets Offers maintenance and engineering solutions, including line maintenance, components repair, and engine services | Airlines and Aviation | πŸ‡§πŸ‡ͺ Zaventem | 577 | 1923 | | 36 | [Ardena](https://www.tamtam.ai/c/ardena) (ardena.com)
Global provider of drug development, bioanalysis, and regulatory services with expertise in advanced formulations and specialized drug delivery technologies. | Pharmaceutical Manufacturing | πŸ‡§πŸ‡ͺ Ghent | 566 | 2017 | | 37 | [TEC](https://www.tamtam.ai/c/tec-antwerpen) (tec.be)
Technical consultancy agency with experienced team of consultants specializing in various industries Offers project sourcing and builds partnerships with clients and professionals | Outsourcing and Offshoring Consulting | πŸ‡§πŸ‡ͺ Antwerp | 558 | | | 38 | [ITZU Group](https://www.tamtam.ai/c/itzu-group) (itzu.eu)
HR and Facility services provider focusing on people, offering recruitment, training, cleaning services, and career support for employees, clients, and partners | Human Resources Services | πŸ‡§πŸ‡ͺ Hasselt | 538 | 2016 | | 39 | [Synergie Belgium](https://www.tamtam.ai/c/synergie-belgium) (synergiejobs.be)
A team of 500 colleagues across 70+ locations in Belgium, specializing in Interim, Careers, Construct, and S&You to match individuals with the right workplaces | Human Resources Services | πŸ‡§πŸ‡ͺ Antwerp | 520 | 1969 | | 40 | [AXI IT Services](https://www.tamtam.ai/c/axi-it-services) (axi.be)
Innovative software and IT solutions provider for various industries, helping clients succeed and achieve their vision with offices in Netherlands and Belgium | IT Services and IT Consulting | πŸ‡§πŸ‡ͺ Willebroek | 497 | 1985 | | 41 | [Studibo](https://www.tamtam.ai/c/studibo) (studibo.be)
Studibo is a group of engineering and consulting firms in Flanders, offering comprehensive services for the construction sector with a focus on customer satisfaction and continuous improvement | Engineering Services | πŸ‡§πŸ‡ͺ Merelbeke | 496 | 2022 | | 42 | [Konvert](https://www.tamtam.ai/c/konvert) (konvert.be)
A team-focused staffing agency offering tailored training, professional support, work/life balance, and opportunities for personal growth within a 25 km radius | Human Resources Services | πŸ‡§πŸ‡ͺ Kortrijk | 493 | 1964 | | 43 | [AlliA](https://www.tamtam.ai/c/allia) (allia.be)
Independent insurance broker in Belgium offering balanced insurance packages tailored to individual needs through market research and dedicated service | Insurance | πŸ‡§πŸ‡ͺ Roeselare | 484 | 1979 | | 44 | [Tempo-Team Belgium](https://www.tamtam.ai/c/tempo-team-belgium) (tempo-team.be)
Providing customized HR services and recruitment solutions for flexible and fixed work arrangements, serving large companies and SMEs. | Human Resources Services | πŸ‡§πŸ‡ͺ Strombeek-Bever | 476 | | | 45 | [TriFinance Belgium](https://www.tamtam.ai/c/trifinance-belgium) (trifinance.com)
An independent international growth service provider offering advice, implementation, and support in finance and control, focusing on achieving tangible results for clients | Financial Services | πŸ‡§πŸ‡ͺ Antwerp | 467 | 2002 | | 46 | [ALASKA \| Advisors Accountants Auditors](https://www.tamtam.ai/c/alaska-advisors-accountants-auditors) (alaska-group.eu)
Alaska provides accountancy, tax advice, and audit services in Belgium with a focus on personalized approach and quality service They are also a member of PrimeGlobal | Financial Services | πŸ‡§πŸ‡ͺ Kortrijk | 466 | 2007 | | 47 | [ABO](https://www.tamtam.ai/c/abo) (abo.be)
A leading environmental consultancy firm in Belgium, providing soil and environmental services for government, corporations, and individuals with a solution-oriented approach | Environmental Services | πŸ‡§πŸ‡ͺ Gent (SDW) | 448 | | | 48 | [Titeca Pro Accountants & Experts](https://www.tamtam.ai/c/titeca-pro-accountants-and-experts) (titeca.be)
A collaborative team of diverse professionals providing specialized expertise in various business domains, ensuring clients receive knowledgeable, experienced guidance for their future decisions | Accounting | πŸ‡§πŸ‡ͺ Roeselare | 438 | 1987 | | 49 | [Agidens](https://www.tamtam.ai/c/agidens) (agidens.com)
Industrial process automation partner, improving production processes daily. Provides automation solutions, digital technologies, and value-added services for safer, smarter, more flexible, and sustainable production. | Industrial Machinery Manufacturing | πŸ‡§πŸ‡ͺ Zwijndrecht | 434 | 1947 | | 50 | [SDE](https://www.tamtam.ai/c/sde) (alistar.net)
The company helps modern businesses eliminate IT stress with software and infrastructure solutions to improve productivity, reduce costs, and enable growth | IT Services and IT Consulting | πŸ‡§πŸ‡ͺ Lochristi | 427 | 1982 | | 51 | [Pauwels Consulting](https://www.tamtam.ai/c/pauwels-consulting) (pauwelsconsulting.com)
Staffing and managing projects with experts in engineering, life sciences, and IT for organizations across Belgium, France, and the Netherlands. | Business Consulting and Services | πŸ‡§πŸ‡ͺ Diegem | 426 | 1999 | | 52 | [Contec - Industrial Automation Solutions](https://www.tamtam.ai/c/contec-industrial-automation-solutions) (contec-ias.com)
International engineering specializing in improving industrial processes with services in electricity, automation, MES/MOM, and industrial IT, striving for added value and preparing companies for the future | Engineering Services | πŸ‡§πŸ‡ͺ Antwerp | 420 | 1986 | | 53 | [Laborelec](https://www.tamtam.ai/c/laborelec) (laborelec.com)
A leading expertise and research center in electrical power technology, providing specialized services and solutions for the energy transition globally | Utilities | πŸ‡§πŸ‡ͺ Linkebeek | 418 | | | 54 | [GEOxyz](https://www.tamtam.ai/c/geoxyz) (geoxyz.eu)
Maritime data specialist providing hydrographic, geophysical, geotechnical, and topographical surveys alongside renewable energy support and crew transfers for offshore infrastructure development projects. | Maritime Transportation | πŸ‡§πŸ‡ͺ Zwevegem | 411 | 1998 | | 55 | [Superellipse](https://www.tamtam.ai/c/superellipse) (superellipse.be)
Award-winning design and innovation agency with expertise in digital product, strategy, branding, and spatial design Partnering with clients to create impactful experiences | Design Services | πŸ‡§πŸ‡ͺ Mechelen | 409 | 1995 | | 56 | [CATTAN](https://www.tamtam.ai/c/cattan)
A management consulting firm located in Dendermonde, Belgium, specializing in providing strategic guidance and solutions for businesses | Business Consulting and Services | πŸ‡§πŸ‡ͺ Dendermonde | 392 | | | 57 | [ARTES](https://www.tamtam.ai/c/artes) (artes.law)
Specialized business law firm in IP, IT, Privacy & Security, with expertise in copyright, trademarks, patents, computer law, and commercial disputes Providing personalized legal representation | Law Practice | πŸ‡§πŸ‡ͺ Antwerp | 384 | 2018 | | 58 | [INDEA](https://www.tamtam.ai/c/indea) (indea.be)
We specialize in reducing energy costs for industrial businesses through improving process efficiency and optimizing heat consumption, resulting in significant savings and reduced carbon footprint | Industrial Machinery Manufacturing | πŸ‡§πŸ‡ͺ Aalst | 378 | 2007 | | 59 | [SBE](https://www.tamtam.ai/c/sbe) (sbe-engineering.com)
Innovative civil engineering and electromechanical solutions provider with expertise in port, river, civil engineering, urbanism, industrial constructions, and electromechanics #expertsatplay | Civil Engineering | πŸ‡§πŸ‡ͺ Sint-Niklaas | 376 | 1988 | | 60 | [Gumption Group](https://www.tamtam.ai/c/gumption-group) (gumption.eu)
Innovative ecosystem specializing in brand, customer experience, digital technology, and process automation Co-creating the future with interconnected start-ups and scale-ups | Business Consulting and Services | πŸ‡§πŸ‡ͺ Kontich | 372 | | | 61 | [Skill BuilderS](https://www.tamtam.ai/c/skill-builders) (skillbuilders.be)
Skill BuilderS guides and coaches individuals and businesses towards sustainable workplace happiness through talent development, career counseling, assessment, and customized learning experiences | Human Resources Services | πŸ‡§πŸ‡ͺ Aalst | 370 | 1986 | | 62 | [Multi.engineering](https://www.tamtam.ai/c/multi-engineering) (multi.engineering)
The company provides flexible engineering solutions for clients in industries such as Industry, Building & Infrastructure, and Maritime & Offshore through design, sourcing, and consultancy services | Industrial Machinery Manufacturing | πŸ‡§πŸ‡ͺ Temse | 369 | 1996 | | 63 | [Talentus](https://www.tamtam.ai/c/talentus) (talentus.be)
A dedicated HR partner offering tailored recruitment solutions for companies of all sizes and sectors, connecting committed candidates with valuable skills | Staffing and Recruiting | πŸ‡§πŸ‡ͺ Antwerp | 367 | | | 64 | [United Experts Group](https://www.tamtam.ai/c/united-experts-group) (unitedexpertsgroup.be)
A knowledge network connecting businesses with diverse expertise to guide and advise entrepreneurs in achieving growth and realizing their plans at every crucial stage | Business Consulting and Services | πŸ‡§πŸ‡ͺ Beringen | 364 | 1996 | | 65 | [PKF BOFIDI](https://www.tamtam.ai/c/pkf-bofidi) (pkfbofidi.com)
Professional network offering accounting, tax, and services in Brussels, Antwerp, and Ghent Customer-oriented for SMEs, professionals, and international companies with proactive expertise | Financial Services | πŸ‡§πŸ‡ͺ Ghent | 359 | | | 66 | [Vivaldis](https://www.tamtam.ai/c/vivaldis) (vivaldisinterim.be)
Connecting individuals with interim or permanent job opportunities, focusing on personality over experience and offering continuous job search support. | Staffing and Recruiting | πŸ‡§πŸ‡ͺ Antwerp | 359 | 1991 | | 67 | [Randstad Digital Belgium](https://www.tamtam.ai/c/randstad-digital-belgium) (randstaddigital.be)
Provides global talent, production capabilities, and specialized solutions for rapid business transformation, focusing on customer experience, engineering, data & analytics, and cloud. | Staffing and Recruiting | πŸ‡§πŸ‡ͺ | 358 | | | 68 | [Sisu Group](https://www.tamtam.ai/c/sisu-group) (sisu.be)
Provider of workforce solutions across various industries, offering advisory, staffing, and training services to help businesses thrive and succeed together | Business Consulting and Services | πŸ‡§πŸ‡ͺ Antwerp | 342 | 2020 | | 69 | [chrbelgium](https://www.tamtam.ai/c/chrbelgium) (chrbelgium.com)
Specializing in executive search and recruitment for financial services and finance, we are your trusted experts in finding top talent | Staffing and Recruiting | πŸ‡§πŸ‡ͺ Tervuren | 341 | | | 70 | [Sopra Steria BE](https://www.tamtam.ai/c/sopra-steria-be) (tobania.be)
Trusted partner in business and technology consulting, driving digital transformation by leveraging business, data, and technology with a powerhouse of experts | IT Services and IT Consulting | πŸ‡§πŸ‡ͺ Strombeek-Bever | 333 | | | 71 | [Bright Plus Outsourcing Solutions](https://www.tamtam.ai/c/bright-plus-outsourcing-solutions) (brightplus.be)
A team of over 350 skilled experts offering support for projects and departmental growth, with a wide range of business skills and experience | Outsourcing and Offshoring Consulting | πŸ‡§πŸ‡ͺ Vilvoorde | 331 | 2004 | | 72 | [Randstad RiseSmart Belgium](https://www.tamtam.ai/c/randstad-risesmart-belgium) (randstadenterprise.com)
Market leader in people and organizational development, specializing in talent, organizational, and leadership transitions to foster sustainable engagement and growth | Human Resources Services | πŸ‡§πŸ‡ͺ Kraainem | 322 | 2002 | | 73 | [clearXperts](https://www.tamtam.ai/c/clearxperts) (clearxperts.com)
Specialized in project sourcing and interim management in Finance, Legal, HR, and Marketing, connecting top organizations with skilled consultants for growth and success | Business Consulting and Services | πŸ‡§πŸ‡ͺ Aartselaar | 320 | 2008 | | 74 | [Normec BTV](https://www.tamtam.ai/c/normec-btv) (normecbtv.com)
Offers legal controls, inspections, and safety investigations for businesses. Ensures compliance with regulations and promotes a safe working environment. | Civil Engineering | πŸ‡§πŸ‡ͺ Antwerp | 318 | 1927 | | 75 | [ATS NV](https://www.tamtam.ai/c/ats-nv) (atsgroep.be)
A multidisciplinary technology group specializing in creating sustainable, innovative, and efficient production environments through turnkey projects in electrical, mechanical, and distribution activities | Industrial Machinery Manufacturing | πŸ‡§πŸ‡ͺ Merelbeke | 317 | 1984 | | 76 | [SECO Belgium](https://www.tamtam.ai/c/seco-belgium) (groupseco.be)
Provider of technical inspection, certification, and advisory services for construction projects worldwide, ensuring safety, reducing risk, and optimizing solutions | Construction | πŸ‡§πŸ‡ͺ Diegem | 315 | | | 77 | [Axxes IT Consultancy](https://www.tamtam.ai/c/axxes-it-consultancy) (axxes.com)
A consulting firm specializing in providing ICT staffing solutions, offering temporary placement of professionals and permanent recruitment services in Belgium and Netherlands | IT Services and IT Consulting | πŸ‡§πŸ‡ͺ Antwerp | 314 | 1998 | | 78 | [OOOOOOO](https://www.tamtam.ai/c/ooooooo) (ooooooo.be)
An organization offering personalized learning tracks, coaching, and workshops to help individuals manage their time, relationships, and energy for improved satisfaction and results | Professional Training and Coaching | πŸ‡§πŸ‡ͺ Antwerp | 306 | 2004 | | 79 | [Capgemini Belgium](https://www.tamtam.ai/c/capgemini-belgium) (capgemini.com)
Global leader in consulting, technology, and outsourcing services with a focus on creating innovative business solutions for clients worldwide | IT Services and IT Consulting | πŸ‡§πŸ‡ͺ Diegem | 303 | 1967 | | 80 | [Asap.be - Enjoy your job](https://www.tamtam.ai/c/asap-be-enjoy-your-job) (asap.be)
HR service provider offering temporary work, recruitment, project sourcing, e-assessments, and outplacement 80+ offices, 375 employees, and 5000+ temporary workers | Human Resources Services | πŸ‡§πŸ‡ͺ Genk | 302 | 1979 | | 81 | [Bluecrux](https://www.tamtam.ai/c/bluecrux) (bluecrux.com)
Value chain consulting and technology firm founded in 2011, specializing in transforming supply chains into integrated value chains for global clients | Software Development | πŸ‡§πŸ‡ͺ Mechelen | 298 | 2011 | | 82 | [HRD Antwerp](https://www.tamtam.ai/c/hrd-antwerp) (hrdantwerp.com)
Leading authority in Diamond and Jewellery Grading and Education, with over 570 years of experience, offering high-quality products, services, and grading reports | Retail Luxury Goods and Jewelry | πŸ‡§πŸ‡ͺ Antwerp | 298 | 1973 | | 83 | [EASYPAY GROUP](https://www.tamtam.ai/c/easypay-group) (easypay-group.com)
Full-service HR solutions including payroll, staff administration, training, legal advice, career guidance, outsourcing, and wage cost optimization for businesses. | Human Resources Services | πŸ‡§πŸ‡ͺ Meulebeke | 295 | 1981 | | 84 | [USG People Belgium NV](https://www.tamtam.ai/c/usg-people-belgium-nv) (usgpeople.be)
An ecosystem of brands offering HR and staffing solutions, connecting individuals and businesses with opportunities for life faster and simpler | Human Resources Services | πŸ‡§πŸ‡ͺ Antwerp | 292 | | | 85 | [Luna](https://www.tamtam.ai/c/luna-hoeilaart) (linktr.ee)
A versatile communication partner offering PR, content marketing, copywriting, business development, and internal communication services for a wide range of activities | Public Relations and Communications Services | πŸ‡§πŸ‡ͺ Hoeilaart | 292 | 1993 | | 86 | [Van Havermaet](https://www.tamtam.ai/c/van-havermaet) (vanhavermaet.be)
Providing specialized financial, legal, tax, and HR advice nationally and internationally with a personal approach, over 54 years of experience, and a team of 170 experts | Business Consulting and Services | πŸ‡§πŸ‡ͺ Hasselt | 286 | 1942 | | 87 | [RSM BELGIUM](https://www.tamtam.ai/c/rsm-belgium) (rsm.global)
Providing accountancy, audit, transactions, IT advisory, sustainability, and tax advice to middle-market companies and organizations in Belgium. | Financial Services | πŸ‡§πŸ‡ͺ Uccle | 276 | | | 88 | [Trustteam BelgiΓ« / Belgique](https://www.tamtam.ai/c/trustteam-belgie-belgique) (trustteam.eu)
Leading provider of IT managed services offering cloud, infrastructure, networking, security, software, VoIP, and support solutions with multiple certified data centers | IT Services and IT Consulting | πŸ‡§πŸ‡ͺ Kortrijk | 275 | 2002 | | 89 | [Modero](https://www.tamtam.ai/c/modero) (modero.be)
A progressive agency focused on serving judgments, getting defaulters to pay, and preventing payment disputes with a human-centered approach | Legal Services | πŸ‡§πŸ‡ͺ Antwerp | 270 | 2000 | | 90 | [SPC](https://www.tamtam.ai/c/spc-leuven) (spc.be)
Specializing in geo-information services since 1989, this Leuven-based business offers above ground and underground surveys as well as land surveying expertise | IT Services and IT Consulting | πŸ‡§πŸ‡ͺ Leuven | 267 | 1989 | | 91 | [ACA Group](https://www.tamtam.ai/c/aca-group-hasselt) (acagroup.be)
Innovative team focused on sustainable development, quality, and customer success through solutions in IT, communication, and team efficiency for 30+ years | IT Services and IT Consulting | πŸ‡§πŸ‡ͺ Hasselt | 267 | 1998 | | 92 | [AM Group](https://www.tamtam.ai/c/am-group) (groupam.be)
An HR group consisting of three companies specializing in recruitment, payrolling, and outsourcing with a focus on growth and innovation | Human Resources Services | πŸ‡§πŸ‡ͺ Roeselare | 256 | 2019 | | 93 | [ACEG](https://www.tamtam.ai/c/aceg) (aceg.be)
Accredited inspection body for a wide range of sectors, offering services for electricity, gas, elevators, asbestos, water, environment, and more | Facilities Services | πŸ‡§πŸ‡ͺ Strombeek-Bever | 255 | 2011 | | 94 | [Econocom Belgium](https://www.tamtam.ai/c/econocom-belgium) (econocom.be)
A global leader in digital transformation solutions, offering expertise in workplace development, audiovisual technology, and infrastructure services to companies worldwide | IT Services and IT Consulting | πŸ‡§πŸ‡ͺ Zaventem | 254 | 1972 | | 95 | [LACO](https://www.tamtam.ai/c/laco) (laco.be)
Belgian-based business intelligence firm with 35+ years of experience Specializing in SAS and Microsoft BI, data governance, and advanced analytics | IT Services and IT Consulting | πŸ‡§πŸ‡ͺ Diegem | 245 | 1986 | | 96 | [Unique Career Belgium](https://www.tamtam.ai/c/unique-career-belgium) (career.be)
Connecting motivated consultants with companies for project support in various fields through training and a competitive salary package | Human Resources Services | πŸ‡§πŸ‡ͺ Antwerp | 244 | | | 97 | [Antea Group Belgium](https://www.tamtam.ai/c/antea-group-belgium) (anteagroup.es)
International engineering specializing in environment, infrastructure, public space, and water solutions Driven by social issues, fostering teamwork for a better future | Research Services | πŸ‡§πŸ‡ͺ Antwerp | 239 | 1974 | | 98 | [P95](https://www.tamtam.ai/c/p95) (p-95.com)
A global provider of clinical research solutions specializing in vaccines and infectious diseases, offering services such as clinical studies, epidemiology, and medical writing | Research Services | πŸ‡§πŸ‡ͺ Leuven | 237 | 2011 | | 99 | [Happiness](https://www.tamtam.ai/c/happiness) (happiness-anywhere.com)
A consultancy agency in Brussels and Saigon specializing in guiding clients through the 30 communication era with big ideas fueled by big data | Advertising Services | πŸ‡§πŸ‡ͺ Vilvoorde | 237 | | | 100 | [Hudson Benelux](https://www.tamtam.ai/c/hudson-benelux) (hudsonsolutions.com)
Specializing in HR solutions partnership | Human Resources Services | πŸ‡§πŸ‡ͺ Ghent | 233 | 1982 | ## 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 Flanders - [The largest companies in Flanders](https://www.tamtam.ai/l/largest-companies-flanders) (4,222) - [Multinational companies in Flanders](https://www.tamtam.ai/l/multinational-companies-flanders) (1,023) - [Manufacturers in Flanders](https://www.tamtam.ai/l/manufacturers-flanders) (415) - [Retail chains in Flanders](https://www.tamtam.ai/l/retail-chains-flanders) (370) - [IT services companies in Flanders](https://www.tamtam.ai/l/it-services-companies-flanders) (367) - [IT Services and IT Consulting companies in Flanders](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-flanders) (356) - [Companies with in-house R&D in Flanders](https://www.tamtam.ai/l/r-and-d-companies-flanders) (352) - [Transportation, Logistics, Supply Chain and Storage companies in Flanders](https://www.tamtam.ai/l/transportation-logistics-supply-chain-and-storage-companies-flanders) (313) - [Family-owned companies in Flanders](https://www.tamtam.ai/l/family-owned-companies-flanders) (310) - [Software Development companies in Flanders](https://www.tamtam.ai/l/software-development-companies-flanders) (287) - [SaaS companies in Flanders](https://www.tamtam.ai/l/saas-companies-flanders) (265) - [Distributors and wholesalers in Flanders](https://www.tamtam.ai/l/distributors-and-wholesalers-flanders) (246) - [Hardware manufacturers in Flanders](https://www.tamtam.ai/l/hardware-companies-flanders) (213) - [Truck Transportation companies in Flanders](https://www.tamtam.ai/l/truck-transportation-companies-flanders) (205) - [Logistics companies in Flanders](https://www.tamtam.ai/l/logistics-companies-flanders) (202) - [Critical infrastructure operators in Flanders](https://www.tamtam.ai/l/critical-infrastructure-operators-flanders) (183) - [Retail companies in Flanders](https://www.tamtam.ai/l/retail-companies-flanders) (182) - [Food and Beverage Manufacturing companies in Flanders](https://www.tamtam.ai/l/food-and-beverage-manufacturing-companies-flanders) (175) - [Consulting firms in Flanders](https://www.tamtam.ai/l/consulting-firms-flanders) (172) - [E-commerce companies in Flanders](https://www.tamtam.ai/l/ecommerce-companies-flanders) (145) - [Advertising Services companies in Flanders](https://www.tamtam.ai/l/advertising-services-companies-flanders) (137) - [Food and beverage companies in Flanders](https://www.tamtam.ai/l/food-and-beverage-companies-flanders) (131) - [Financial services firms in Flanders](https://www.tamtam.ai/l/financial-services-firms-flanders) (128) - [Consumer goods companies in Flanders](https://www.tamtam.ai/l/consumer-goods-companies-flanders) (119) ## The same list elsewhere in Belgium - [Professional services firms in Belgium](https://www.tamtam.ai/l/professional-services-firms-belgium) (396) - [Professional services firms in Wallonia](https://www.tamtam.ai/l/professional-services-firms-wallonia) (38) - [Professional services firms in Brussels](https://www.tamtam.ai/l/professional-services-firms-brussels) (64) - [Professional services firms in Antwerp](https://www.tamtam.ai/l/professional-services-firms-antwerp) (49) --- Source: https://www.tamtam.ai/l/professional-services-firms-flanders