The professional services firms in Lille listed here include a mix of established companies and younger businesses. Among the larger firms, BGE Hauts de France supports entrepreneurs with training and financing, while ACALY Conseil en Ingénierie offers technical and organizational consulting. Diligentia provides accounting and auditing services, and Citéo Médiation focuses on mediation and facilitation for societal change. Vacherand Immobilier is a family-owned real estate company.
The data shows a concentration of companies founded between 2010 and 2018, indicating a period of growth for new professional services ventures in Lille. Many of these newer firms specialize in digital transformation, IT services, and software development, such as Les-Tilleuls.coop, which designs web and mobile projects using open-source software.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
BGE Hauts de Francebge-hautsdefrance.fr
Support entrepreneurs with project preparation, training, financing, networking, and local expertise to increase chances of business success. |
228 | |||
| 2 |
ACALY Conseil en Ingénierieacaly.eu
The company provides technical and organizational consulting services, offers work packages for project outsourcing, and focuses on research and innovation for clients' success |
183 | |||
| 3 |
Diligentia | Audit • Conseil • Expertisediligentia.fr
An accounting and auditing firm in Northern France offering personalized support in accounting, taxation, legal, and social matters for businesses and professionals |
133 | |||
| 4 |
Citéo Médiationciteo.org
Mediation and facilitation agency assisting businesses, communities, and citizens in navigating societal change through tailored guidance promoting understanding, participation, and sustainable collective action |
125 | |||
| 5 |
Vacherand Immobiliervacherand.fr
A family-owned company in the real estate sector since 1997, offering a range of services including property management, real estate transactions, and asset management |
125 | |||
| 6 |
Les-Tilleuls.cooples-tilleuls.coop
Design and development of innovative web and mobile projects using open-source software, with democratic cooperative governance and profit sharing. |
74 | |||
| 7 | 57 | ||||
| 8 |
Crowe COGEFIS - Groupe Fideliancecrowe.com
COGEFIS is an independent accounting and auditing firm, part of the global network CROWE, providing specialized services to various organizations |
42 | |||
| 9 |
GenoScreengenoscreen.fr
Innovative genomics company providing tailored solutions in healthcare, agronomy, skincare, etc through DNA analysis, sequencing, consultation, and training services |
39 | |||
| 10 | 37 | ||||
| 11 | 36 | ||||
| 12 |
ORSEU ETHIXorseu-ethix.fr
Provide expertise and support to CSE representatives for economic understanding, negotiation, social policy improvement, and adapting to legislative changes. |
34 | |||
| 13 |
OZEO Consultingozeo-consulting.fr
OZEO Consulting is a young digital service company focusing on differentiated intellectual services with strong human values and excellence |
32 | |||
| 14 |
ZeTracezetrace.com
A leading consultancy specializing in digital commerce transformation and sustainability for medium to large B2C and B2B organizations, offering expertise and recruitment services |
31 | |||
| 15 |
Dalt - Digital alternativedalt.fr
Custom web development, UX/UI design, digital marketing, and AI integration for businesses, delivering high-performance websites and scalable digital solutions focused on profitability. |
30 | |||
Want more companies than this list?This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. | |||||
| 16 |
WINGEST AUDIT & EXPERTISE
WINGEST AUDIT & EXPERTISE is a certified accounting firm with offices in Epinay sur Seine and Lille, offering expert services |
27 | |||
| 17 |
ADHOCbilan-de-competences-lille.fr
Specialists in career guidance, offering personalized support for individuals seeking reorientation through skills assessment and personalized coaching by a team of psychologists and HR consultants |
26 | |||
| 18 |
L’Échappée Bièreevent.echappee-biere.com
A tourism and event agency specializing in beer, offering unique experiences, tours, and events focused on discovering the French and international beer culture |
26 | |||
| 19 |
ALTUS CONSEILS - GROUPE AFIGECafigec.com
An accounting firm located in Lille, France, providing financial advisory services and solutions to businesses in the region |
25 | |||
| 20 |
VIVALDI Avocatsvivaldi-avocats.com
A multi-bar law firm based in Paris and Lille specializing in Business Law with a team of 18 lawyers and legal experts They offer comprehensive legal services to a loyal clientele |
25 | |||
| 21 |
French Payroll Services secrétariat socialfrenchpayrollservices.fr
Providing payroll services and legal advice for labor matters in France, including training Specializing in assisting international companies with French development and payroll |
25 | |||
| 22 | 24 | ||||
| 23 | 22 | ||||
| 24 |
Talositalosi.com
Talosi is a new generation IT consulting company focused on personalized and transparent services, where employees feel at home They embrace a geek culture |
21 | |||
| 25 |
IBM SERVICES CENTER FRANCE
An IT services company in Lille, France, providing technology solutions and services to clients in the region and beyond |
21 | |||
| 26 |
Data-IT - Groupe IT & You ©️data-it.fr
Data-IT is a high-end IT services company specialized in office and computer technologies, offering expertise and technical skills to develop and maintain clients' information systems |
20 | |||
| 27 |
Solenersolener.fr
Solener is a sustainable building consultancy with over 30 years of experience, focusing on energy efficiency, environmental optimization, and innovative solutions |
17 | |||
| 28 |
QUINTUOR
Specializing in business law, providing expert advice, guidance, and defense of corporate interests |
15 | |||
| 29 | 13 | ||||
| 30 |
Sapiologiesapiologie.com
A sustainability consulting firm offering life cycle analysis to measure environmental, social, and ethical impacts, providing recommendations for sustainable practices |
12 | |||
Turn this list into pipeline
Tamtam finds the decision-makers at every company on a list like this one, with verified emails, phone numbers and the buying signals that tell you when to reach out.
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 Lille
- The largest companies in Lille 891
- SaaS companies in Lille 104
- Retail chains in Lille 77
- Software Development companies in Lille 77
- Multinational companies in Lille 76
- IT Services and IT Consulting companies in Lille 66
- Companies with in-house R&D in Lille 56
- IT services companies in Lille 56
- Education providers in Lille 51
- Public sector organisations in Lille 50
- Real Estate companies in Lille 43
- Consulting firms in Lille 38
- Companies with a mobile app in Lille 37
- Higher Education companies in Lille 36
- Professional Training and Coaching companies in Lille 32
- Law Practice companies in Lille 31
- Subscription businesses in Lille 31
- Advertising Services companies in Lille 30
- Technology, Information and Internet companies in Lille 30
- Critical infrastructure operators in Lille 28
- Business Consulting and Services companies in Lille 28
- Civic and Social Organizations companies in Lille 28
- Recruitment and staffing agencies in Lille 26
- Government Administration companies in Lille 25
The same list elsewhere in France
- Professional services firms in France 6,611
- Professional services firms in Île-de-France 3,377
- Professional services firms in Auvergne-Rhône-Alpes 711
- Professional services firms in the Hauts-de-Seine department 629
- Professional services firms in Provence-Alpes-Côte d'Azur 433
- Professional services firms in the Rhône department 400
- Professional services firms in Occitanie 399
- Professional services firms in Grand Est 316
- Professional services firms in Nouvelle-Aquitaine 308
- Professional services firms in Hauts-de-France 260
- Professional services firms in Pays de la Loire 254
- Professional services firms in the Bouches-du-Rhône department 249
- Professional services firms in the Haute-Garonne department 208
- Professional services firms in the Nord department 178
- Professional services firms in Brittany 167
- Professional services firms in the Loire-Atlantique department 158
- Professional services firms in the Gironde department 151
- Professional services firms in Normandy 114
- Professional services firms in the Yvelines department 108
- Professional services firms in Paris 2,241
- Professional services firms in Lyon 265
- Professional services firms in Toulouse 139
- Professional services firms in Marseille 123
- Professional services firms in Boulogne-Billancourt 102