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30 leading consulting firms in Lille

Tamtam tracks 38 consulting firms headquartered in Lille. This list ranks the 30 largest by number of employees on LinkedIn, led by ACALY Conseil en Ingénierie, NIKITA and Diligentia | Audit • Conseil • Expertise. Their median headcount is 21. Half of them were founded in 2014 or later.

🇫🇷 Lille30 companiesUpdated Nov 11, 2026

The consulting firms in Lille include a mix of established and young companies, primarily focused on business, IT, and specialized services. ACALY Conseil en Ingénierie provides technical and organizational consulting, while NIKITA offers consulting and creative communication services. Diligentia specializes in accounting and auditing, and Citéo Médiation focuses on mediation and facilitation for societal change. Les-Tilleuls.coop designs and develops open-source web and mobile projects.

A notable pattern among these firms is a strong presence of IT services and consulting, with companies like ICSIS, BeWe, and Meedz specializing in digital transformation, app development, and cybersecurity. The majority of these firms were founded in the 2010s, indicating a relatively recent growth in the consulting sector in Lille.

#CompanyIndustryHeadquarters EmployeesFounded
1
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

Business Consulting and Services 🇫🇷 Lille 183 2015
2
NIKITAnikita.fr

Consulting and creative communication services focused on facilitating positive change and business transformation through impactful, useful, and efficient creativity.

Advertising Services 🇫🇷 Lille 137 1991
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

Accounting 🇫🇷 Lille 133 n/a
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

Civic and Social Organizations 🇫🇷 Lille 125 1998
5
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.

Software Development 🇫🇷 Lille 74 2011
6
OTTEOotteo.fr

A consulting and engineering company offering services in product development, recruitment assistance, and professional training across various sectors Contact for more information

Business Consulting and Services 🇫🇷 Lille 57 2010
7
ICSISicsis.fr

An innovative digital company specializing in digital transformation projects, offering a wide range of services such as app development, BI, and project management assistance

IT Services and IT Consulting 🇫🇷 Lille 37 2013
8
BeWebewe.eu

A service company specializing in guiding organizations through digital transformation with expertise in collaboration solutions, business consulting, technology integration, change management, and user adoption

IT Services and IT Consulting 🇫🇷 Lille 36 2013
9
ORSEU ETHIXorseu-ethix.fr

Provide expertise and support to CSE representatives for economic understanding, negotiation, social policy improvement, and adapting to legislative changes.

Legal Services 🇫🇷 Lille 34 1992
10
OZEO Consultingozeo-consulting.fr

OZEO Consulting is a young digital service company focusing on differentiated intellectual services with strong human values and excellence

IT Services and IT Consulting 🇫🇷 Lille 32 n/a
11
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

Technology, Information and Internet 🇫🇷 Lille 31 2018
12
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

Events Services 🇫🇷 Lille 26 2013
13
Meedzmeedz.io

Meedz specializes in creating innovative digital tools to enhance client performance and competitiveness They excel in development, Devops, and data solutions

IT Services and IT Consulting 🇫🇷 Lille 24 2021
14
LUPISElupise.fr

The company specializes in securing organizations through cybersecurity services such as audits, training, project management, crisis management support, and secure development

IT Services and IT Consulting 🇫🇷 Lille 22 n/a
15
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

IT Services and IT Consulting 🇫🇷 Lille 21 2021

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16
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

Computer and Network Security 🇫🇷 Lille 20 2014
17
Solenersolener.fr

Solener is a sustainable building consultancy with over 30 years of experience, focusing on energy efficiency, environmental optimization, and innovative solutions

Construction 🇫🇷 Lille 17 1988
18
SKILLXskillx.fr

A technology company from Hauts-de-France specializing in cybersecurity and cloud services to accelerate clients' IT transition, with a liberated and trust-based approach

Computer and Network Security 🇫🇷 Lille 13 2018
19
Sapiologiesapiologie.com

A sustainability consulting firm offering life cycle analysis to measure environmental, social, and ethical impacts, providing recommendations for sustainable practices

Environmental Services 🇫🇷 Lille 12 2021
20
symbolist.symbolist.ai

A digital marketing and CRM agency based in Lille, euraNov aims to enhance businesses' digital performance and streamline innovative solutions implementation

IT Services and IT Consulting 🇫🇷 Lille 11 2015
21
AFIGEC AUDIT HDFaltusfortin.fr

Accounting firm located in Lille, France, offering professional services in financial management, tax preparation, and auditing for businesses and individuals

Business Consulting and Services 🇫🇷 Lille 10 1983
22
Point Triplepointtriple.com

Group of senior entrepreneurs and experts providing holistic, strategic, and creative consulting solutions focused on impactful, efficient models serving organizations and the planet.

Advertising Services 🇫🇷 Lille 9 2019
23
SCHOLA INGENIERIEschola-ingenierie.fr

The company is a training organization and consulting firm specializing in quality compliance, regulatory compliance, and training for employees and training teams

Professional Training and Coaching 🇫🇷 Lille 8 2016
24
NEOBIZneo-biz.fr

Operational consulting agency specializing in B2B commercial development, delivering qualified leads and business meetings to accelerate client growth.

International Trade and Development 🇫🇷 Lille 7 2010
25
Cabinet Michel Simond Hauts de Francemsimond.fr

The company provides confidential support for buying and selling businesses and commercial properties, specializing in Mergers and Acquisitions

Leasing Non-residential Real Estate 🇫🇷 Lille 7 n/a
26
Cécile Boury Conseil Internationalcbci-france.eu

Assists companies with international business, offering strategic and operational support for commercial and marketing development, including export projects and market entry.

International Trade and Development 🇫🇷 Lille 6 2010
27
FCD conseil

Specializing in restaurant creation and development, we offer comprehensive services including market research, legal assistance, business planning, financing, branding, and staff recruitment

Restaurants 🇫🇷 Lille 4 2015
28
SOCO&FI (Société Conseil & Finances)socoandfi.fr

A consulting firm specializing in supporting SMEs, startups, and social economy structures in strategy and financial engineering to optimize decision-making and performance

Business Consulting and Services 🇫🇷 Lille 4 2011
29
Tidjeetidjee.com

A specialized consulting firm focusing on innovation transformation and financing Offers decision support, execution security, and launches projects in training, automation, and AI

Business Consulting and Services 🇫🇷 Lille 2 2016
30
NSP Expertisensp-expertise.com

NSP EXPERTISE is a procurement services company focused on improving profitability and creating savings through innovative and pragmatic solutions Contact us for potential savings evaluation

Business Consulting and Services 🇫🇷 Lille 2 2014

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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.

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