Willier Engineering

What Willier Engineering does

Willier Engineering (legal entity WILLIER INGENIERIE, SARL) is a privately held French building and civil engineering design office founded in 2006 in Rouen by Amadou Willier, an engineer and building expert with more than 30 years of cross-continental experience. The firm provides a full lifecycle of technical engineering services for public and private construction projects, organized around three internal poles: Structural Studies (reinforced concrete and steel structures), Construction Economics (cost estimation, written specifications), and Works (supervision, diagnostics, and coordination). Complementary services include Diagnostic of Existing Structures, Technical Assistance to Project Owners (AMO), Execution Project Management (MOEX), and Scheduling, Piloting and Coordination (OPC).

The company makes money through project-based professional services engagements, with pricing custom-quoted by project scope and complexity and no publicly disclosed rate card. Its go-to-market is enterprise field sales driven by direct outreach, government tenders, and partnerships with architectural firms and prime contractors; customer acquisition is relationship-led rather than channel-led. The group serves government ministries and public agencies, private developers, healthcare and education institutions, and energy and industrial clients, with notable mandates including a 41 billion FCFA toll bridge in Senegal, a 50,000-seat stadium in Cameroon, a 639-room government rehabilitation in Dakar, the 6,000-seat Palais des Sports in Rouen designed with Dominique Perrault, and a 107-unit residential project for Bouygues Immobilier.

Willier operates from its Mont-Saint-Aignan headquarters and a Rouen-area office in Normandy, with a regional subsidiary (Willier Ingénierie Internationale) in Dakar, Senegal established in 2014 to serve West Africa. It also owns BET SICRE, a French technical studies bureau acquired in 2012. The firm is founder-led, employs 11-50 people, holds GDPR compliance, and maintains a professional website plus LinkedIn and Facebook presences; there is no disclosed external funding, no public listing, and no visible technology or AI differentiation beyond the recognized "Plan WILLIER" drawing label.

Name

Willier Engineering

Legal name

WILLIER INGENIERIE

Website

https://willieringenierie.com

Company type

Private

Founded year

2006

Operating status

Operating

Headcount range

11–50 employees

Short description

Willier Engineering is a privately held French building and civil engineering design office founded in 2006, providing structural studies, construction economics, and works supervision to public-sector clients, developers, and prime contractors across France, Senegal, and Cameroon.

Ownership category

akta.pro rank

Product category

Civil Engineering Consulting

NAICS

Engineering Services (54133), Architectural, Engineering, and Related Services (5413)

SIC

Services-Engineering Services (8711), Services-Engineering, Accounting, Research, Management (8700)

akta.pro primary industry

Construction Engineering & Constructability Consulting (BPAHAIAN)

akta.pro secondary industries

Civil & Structural Engineering Consulting (BPAHAIAA), Construction Management (Agency/Owner’s Rep) (IMAFAAAC)

Keywords

• Structural engineering services
• Civil engineering consulting
• Construction project management
• Building design services
• Construction economics services

Headquarters

HQ city

Mont-saint-aignan

HQ country

France

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Infrastructure, Others

Revenue model

1. Engineering Consulting Services: Professional services revenue generated from providing engineering studies, structural analysis, construction economics, project management, and technical assistance for building and civil engineering projects. Revenue is project-based and varies by scope and complexity of engagements.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

Willier Engineering is a building and civil engineering consultancy (bureau d'études) that provides structural engineering studies for reinforced concrete and steel structures, construction economics and cost estimation, construction work supervision, existing building diagnostics, technical assistance to project owners (AMO), execution project management (MOEX), and scheduling, piloting and coordination (OPC) services. The firm operates across France and Senegal, serving both public sector clients (ministries, municipalities, public hospitals) and private developers on construction, renovation, and infrastructure projects.

Product overview

Willier Engineering is a civil engineering and building construction consultancy firm operating primarily in France (Rouen/Mont Saint Aignan) and Senegal (Dakar). The company offers an integrated portfolio of engineering services organized around three main poles: Pole Études de Structures (Structural Studies), Pole Économie de la Construction (Construction Economics), and Pole Travaux (Works). The core services include structural engineering studies for reinforced concrete and steel structures, construction economics and cost estimation, construction work supervision, existing building diagnostics, technical assistance to project owners (AMO), execution project management (MOEX), and scheduling/piloting/coordination (OPC). The company is not a software product company but rather a traditional engineering consultancy firm.

Differentiator

Problem solved

Functional benefit

Products and services

• Structural Studies for Reinforced Concrete and Steel Structures (Études de Structures Béton Armé et Charpentes) Structural engineering studies for reinforced concrete and steel structures covering the design phase (APS, APD, PRO, DCE) and execution phase (formwork plans, reinforcement plans, calculation notes). Provided to project owners, architects, and contractors for building and infrastructure projects.
• Construction Economics (Économie de la Construction) Construction cost estimation and economics services including preparation of DQE, DPGF, and written specifications, advising architects, project managers, and clients on construction costs throughout project lifecycle.
• Construction Work Supervision (Suivi de Travaux) Construction work supervision and monitoring services including control of work progress, adherence to deadlines, and budget compliance on construction sites.
• Existing Building Diagnostics (Diagnostic de l'Existant) Diagnostic assessment services for existing buildings including site surveys, measurements, architectural and technical analysis, compliance recommendations, and diagnostic reports for renovation and rehabilitation projects.
• Technical Assistance to Project Owners (Assistance Technique à Maîtrise d'Ouvrage - AMO) Technical assistance services helping project owners define project programs, manage administrative and financial aspects of contracts, and ensure compliance with schedules and costs during construction projects.
• Execution Project Management (Maîtrise d'Oeuvre d'Exécution - MOEX) Execution project management services including design, project assembly, contractor selection, technical documentation, and construction execution management from design through delivery.
• Scheduling, Piloting and Coordination (Ordonnancement, Pilotage et Coordination - OPC) Scheduling, piloting, and coordination services to organize and harmonize all tasks and actions of different stakeholders throughout construction or rehabilitation projects.

Quantifiable outcome

• 40+ completed projects across multiple countries including Senegal, France, and Cameroon
• +1 more outcomes

Named customers9 records

Segments3 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature1 record

Partnerships

17 partnerships are on record, tiered minor and core.

• SOGEAminorChannel Partner/ Reseller/ DistributorConstruction company partner appearing in Willier Engineering's partner logos section, suggesting collaboration on construction projects.
• Vinci ConstructionminorChannel Partner/ Reseller/ DistributorMajor French construction group listed as a partner, indicating potential collaboration on large infrastructure projects.
• Bamba N'Diaye S.A.minorChannel Partner/ Reseller/ DistributorSenegalese construction company partner appearing in partner logos, collaborated on projects such as Wellness Residence.
• SIPRESminorChannel Partner/ Reseller/ DistributorPartner company appearing in Willier Engineering's partner ecosystem.
• CAIREPROminorChannel Partner/ Reseller/ DistributorPartner company appearing in Willier Engineering's partner ecosystem.
• ALBEDOminorChannel Partner/ Reseller/ DistributorPartner company appearing in Willier Engineering's partner ecosystem.
• ATAUB ArchitectescoreImplementation/ SI/ Consulting PartnerArchitecture firm that collaborated on major projects including the Stade de Football in Douala. Represents an important design partnership for project conception.
• AMSA REALTYminorChannel Partner/ Reseller/ DistributorSenegalese real estate company listed as partner and client, worked on university residences project at UCAD.
• Bouygues ImmobilierminorChannel Partner/ Reseller/ DistributorMajor French real estate developer partner, collaborated on the 107-logement project in Rouen.
• SODEREFminorChannel Partner/ Reseller/ DistributorPartner company appearing in Willier Engineering's partner ecosystem.
• GTM BâtimentminorChannel Partner/ Reseller/ DistributorConstruction company partner appearing in Willier Engineering's partner logos section.
• LhotellierminorChannel Partner/ Reseller/ DistributorConstruction company partner appearing in Willier Engineering's partner ecosystem.
• Lesueur TPminorChannel Partner/ Reseller/ DistributorCivil engineering company partner appearing in partner ecosystem.
• LABOSOLminorChannel Partner/ Reseller/ DistributorPartner company appearing in Willier Engineering's partner ecosystem.
• SCB Nouvelle CalédonieminorChannel Partner/ Reseller/ DistributorPartner company appearing in Willier Engineering's partner ecosystem.
• GIE Henan ChineminorChannel Partner/ Reseller/ DistributorChinese construction company working as general contractor on the Foundiougne Bridge project, with Willier providing engineering studies.
• Dominique Perrault ArchitectecoreStrategic or Co-development PartnerInternationally renowned architect who designed the Palais des Sports in Rouen, collaborating with Willier Engineering on this major sports facility.

Scale indicators4 records

Recent moves8 records

Expansion highlights5 records

Broad incumbents

• Egis: Large French-headquartered engineering group operating across transport, building, energy and environment with deep Africa presence. Overlaps with Willier on building and civil engineering mandates but at much greater scale and geographic breadth.
• Arcadis: Global design and engineering consultancy with established Africa operations. Competes for stadium, healthcare and infrastructure mandates similar to Willier's project portfolio.
• Bureau Veritas: French-rooted global testing, inspection and certification group with adjacent construction economics and project assistance services. Competes for technical control and AMO scopes on the same public-asset projects.
• Artelia: Major French engineering and project management group with strong building, infrastructure and international practices. Competes for the same large public infrastructure tenders as Willier in France and Africa.
• Tractebel (Engie): Belgian/European engineering consultancy owned by Engie with significant energy, infrastructure and building operations in Africa. Overlaps with Willier's industrial/refinery and large public-project work but operates globally.

Direct peers

• INGEROP: Independent French engineering consultancy (BET) covering building, infrastructure, energy and environment. Highly comparable French-rooted multi-disciplinary BET serving public and private clients with structural, economic and supervision services.
• Ginger Group: French engineering and environmental consultancy group with building, infrastructure and water practices. Comparable mid-sized French BET profile delivering studies, diagnostics and works supervision.
• BTP Consultants: French engineering consultancy specialized in building construction (structure, economics, supervision). Directly comparable in service scope, client type (public/private developers) and mid-market positioning to Willier.
• setec: Major French engineering group operating through specialized BET subsidiaries (setec bâtiment, setec tpi, etc.). Closely mirrors Willier's structural studies, construction economics and project management offering for large public infrastructure.

Regional players

• Profil Ingénierie: Senegalese engineering consultancy (BET) active in building and civil engineering design across West Africa. A direct regional peer operating in Dakar with comparable service mix and client base, though Willier's French entity gives it broader European reach.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• Facebookfacebook.com/WILLIERingenierie
• LinkedInlinkedin.com/company/groupe-willier-ingenierie

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Subsidiaries2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Willier Engineering