Willi Engineers
Willi Ingénieurs SA is a Swiss civil and structural engineering consultancy serving property owners, architects, and public authorities across Suisse romande with structural, civil, infrastructure, asbestos diagnostics, and construction supervision services delivered from offices in Montreux, Geneva, and Verbier.
- Company typePrivate
- Founded1983
- HeadquartersMontreux, Switzerland
- Headcount11–50
- GTM typeB2B
- OfferingServices
What Willi Engineers does
Willi Ingénieurs SA is a privately held Swiss civil and structural engineering consultancy headquartered in Montreux, operating across Suisse romande (Western Switzerland) from offices in Montreux, Geneva (opened 2022) and Verbier (opened 2025). Founded in 1983 by Daniel Willi and reincorporated as a Société Anonyme in 1989, the firm employs approximately 35 staff including EPFL-trained engineers, project managers, draftspeople, asbestos experts, a BIM coordinator, and apprentices. In 2024, a new three-person leadership team (Stéphane Menerat, Marco Molteni, Fabio Provenzano) succeeded the founder.
The company delivers six integrated service lines across the full SIA project lifecycle (phases 21-53): structural engineering (concrete, steel, wood), civil engineering and transport infrastructure, construction supervision (Direction de travaux), asbestos diagnostics and removal supervision, pre/post-construction condition surveys, and high-end residential engineering. Service delivery is enabled by BIM methodologies (Revit for structures, Civil 3D for civil engineering) and drone-based site inspections. Landmark reference projects include the Hôpital Riviera-Chablais Vaud-Valais (52,000 m³, 1,200 plans), EPFL ME building reconstruction, the UNESCO-recognized Arène Fête des Vignerons 2019 (1,100 t steel, 20,000 seats), and an overnight CFF railway bridge replacement at Aigle.
The business operates on a fee-for-service professional services model with quote-based, project-priced mandates billed against SIA phase milestones. The go-to-market is sales-led and relationship-driven, targeting property owners (maîtres d'ouvrage), architects, and public authorities in Suisse romande. The client base spans cantonal/municipal government, institutional education (EPFL), real estate developers (HRS Real Estate, Groupe Grisoni), manufacturing (APCO Technologies, Volprod), and luxury hospitality. Revenue is not publicly disclosed and the firm has no external investors, subsidiaries, or M&A history.
Willi Engineers firmographics
Firmographics- Name
- Willi Engineers
- Legal name
- Willi Ingénieurs SA
- Website
- https://willi-ingenieurs.ch
- Company type
- Private
- Founded year
- 1983
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Willi Ingénieurs SA is a Swiss civil and structural engineering consultancy serving property owners, architects, and public authorities across Suisse romande with structural, civil, infrastructure, asbestos diagnostics, and construction supervision services delivered from offices in Montreux, Geneva, and Verbier.
- Ownership category
- akta.pro rank
Willi Engineers industry classification
Industry- Product category
- Civil and Structural Engineering Services
- NAICS
- Engineering Services (541330), Architectural, Engineering, and Related Services (5413)
- SIC
- Construction - Special Trade Contractors (1700)
- akta.pro primary industry
- Civil & Structural Engineering Consulting (BPAHAIAA)
Keywords
Where Willi Engineers is headquartered
LocationHeadquarters
- HQ city
- Montreux
- HQ country
- Switzerland
- HQ region
- Europe
Offices3 records
Markets served
Willi Engineers business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Technology or R&D, Infrastructure, Marketing or Sales
Revenue model
- Engineering Consultancy Services: Fee-for-service engineering consultancy providing structural engineering, civil engineering, infrastructure design, construction management, asbestos diagnostics, and pre/post construction assessments. Projects are typically billed on a per-project basis with fixed fees or time-based billing for larger mandates.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Multi-year contract | Custom project-based pricing |
Go-to-market motion1 record
Distribution channels1 record
Marketing channels4 records
Willi Engineers product offering
Product offeringCore offering
Willi Ingénieurs SA is a Swiss civil and structural engineering consultancy that designs load-bearing structures in reinforced concrete, steel, and wood for buildings, transport infrastructure, and renovation projects. It delivers full SIA-phase services (concept to execution), supported by in-house civil engineering, construction supervision, asbestos diagnostics, and pre/post-work condition surveys, with BIM-enabled (Revit, Civil 3D) and drone-based inspection capabilities.
Product overview
Willi Engineers (Willi Ingénieurs SA) is a Swiss civil engineering consultancy founded in 1983, operating as a unified service firm rather than a platform-plus-modules architecture. The company offers six interconnected engineering service lines: Structure (structural engineering for buildings), Génie civil et infrastructures de transports (civil engineering and transport infrastructure), Diagnostics amiante (asbestos diagnostics), Direction de travaux (construction supervision), Constats avant et après travaux (pre/post-work condition surveys), and Habitat de standing (high-end residential engineering). These services are delivered through a multidisciplinary team covering all SIA phases from feasibility (phase 21) to execution (phase 53), with specialized expertise in BIM methodology (Revit, Civil 3D), structural calculations for concrete/wood/steel, and heritage building conservation. The company operates offices in Montreux (headquarters), Geneva, and Verbier, serving clients throughout French-speaking Switzerland.
Differentiator
Problem solved
Functional benefit
Products and services
- Structure (Structural Engineering) Structural engineering services covering all SIA phases (21-53) for new construction, renovation, and transformation projects using concrete, wood, steel, and reclaimed materials. Provided to property owners, developers, architects, and public authorities across Suisse romande.
- Civil Engineering and Transport Infrastructures (Génie civil et infrastructures de transports)
- Asbestos Diagnostics (Diagnostics amiante) Asbestos diagnostics and asbestos removal work supervision for buildings constructed before 1991, ensuring legal compliance and site safety before renovation or demolition. Provided to property owners, developers, and contractors.
- Construction Supervision (Direction de travaux) Construction supervision services providing strategic planning, cost and schedule monitoring, quality control, technical support, and coordination of all trades for complex industrial projects, heritage buildings, and civil works. Provided to property owners, developers, and public authorities.
- Pre- and Post-Work Condition Surveys (Constats avant et après travaux) Pre- and post-construction condition surveys documenting the state of neighboring structures before construction begins to prevent disputes, including photographic reports, drone surveys, and expert testimony. Provided to property owners, contractors, and legal stakeholders.
- High-End Residential Engineering (Habitat de standing) High-end residential engineering services for luxury villas and premium housing, combining technical expertise with refined architecture and sustainability through BIM modeling (Revit) and intelligent material combinations. Provided to private owners of premium residential properties.
Quantifiable outcome
- Delivered Arène Fête des Vignerons with 1,100t steel structure and 20,000 seats, dismantled in under 2 months
- +2 more outcomes
Companies that use Willi Engineers
Customer profileNamed customers12 records
Segments4 records
Ideal customer profiles3 records
Willi Engineers technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature3 records
Willi Engineers partnerships and signals
Strategic signalPartnerships
Eight partnerships are on record, tiered core.
- Karakas & Français SAcoreGeology, geotechnics, and earthwork partner for Parking des Remparts project. Collaborative relationship on complex underground construction requiring specialized geotechnical expertise.
- Daniel Jaquier SàrlcoreHVAC, plumbing, smoke extraction, and fire protection engineering partner for Parking des Remparts project.
- CICE Ingénieurs SàrlcoreElectrical engineering and lighting design partner for Parking des Remparts project.
- Fehlmann Architectes SAcoreInterior architecture partner for Parking des Remparts project.
- Dominique Perrault ArchitecturecoreParis-based architect firm (with ARCHITRAM locally) for EPFL ME building reconstruction project. Prestigious international architecture firm partnership.
- CCHE Lausanne SAcoreArchitecture firm leading Côté Gare project in consortium with Favre & Guth SA (Geneva) and jbmn SA (Lausanne). Major mixed-use development in Bussigny.
- Atelier Volet SAcoreWood construction specialist for Volprod SA production hall in Aigle. The company designed and constructed the wood structure hall directly.
- Index Architectes SàrlcoreArchitecture firm for Volprod SA production hall project, coordinating with wood structure specialist Atelier Volet.
Scale indicators3 records
Recent moves14 records
Expansion highlights6 records
Willi Engineers competitors and assessment
Company assessmentDirect peers
- BG Ingénieurs Conseils: Swiss multidisciplinary engineering consultancy (civil, structural, environment) headquartered in Lausanne and operating across Suisse romande; near-direct competitor on the same client base of architects, owners and public authorities that Willi serves.
- CSD Ingénieurs: Swiss engineering firm covering civil, structural, environment and energy; directly comparable in scale and regional footprint across Suisse romande and broader Switzerland.
- Emch + Berger: Historic Swiss civil/structural engineering consultancy active in Bern/Suisse romande; comparable mix of structures, transport infrastructure and construction supervision mandates.
- Basler & Hofmann: Swiss engineering consultancy with strong presence in civil/structural and infrastructure works; comparable service portfolio (structure, civil, project supervision) and similar relationship-driven GTM in Switzerland.
- Gruner (Stucky): Swiss engineering group combining building structures, civil/infrastructure and energy; comparable multi-disciplinary service stack and Swiss Romande client overlap.
- Prona AG: Swiss structural and civil engineering consultancy based in French-speaking Switzerland; similar size range and overlapping client base with architects and developers.
Emerging players
- Timbatec Holzbauingenieure: Swiss specialist in timber/wood engineering consulting. Willi has dedicated Bois/wood engineers (Alexy De Rycke, Claude Ethenoz) and competes for the same Minergie-P and engineered-timber mandates.
Broad incumbents
- Arcadis: Global design, engineering and consultancy firm active in Switzerland; competes primarily on larger civil/transport infrastructure tenders overlapping Willi's public-sector pipeline.
- AFRY: Nordic-headquartered engineering and design consultancy with active Swiss infrastructure and structural engineering practice; overlaps with Willi on transport infrastructure and industrial buildings.
- Ramboll: Global engineering consultancy with a strong Swiss and Northern European civil/structural practice; competes on larger public infrastructure mandates in the same tender universe.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights7 records
Customer concentration
Willi Engineers social profiles
Digital presenceWilli Engineers financial estimates
Financial estimateRevenue estimate
Valuation estimate
Willi Engineers leadership team
Management profileNumber of profiles
Profiles19 records
Willi Engineers funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Willi Engineers M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Willi Engineers
What does Willi Engineers do?
Willi Ingénieurs SA is a Swiss civil and structural engineering consultancy that designs load-bearing structures in reinforced concrete, steel, and wood for buildings, transport infrastructure, and renovation projects. It delivers full SIA-phase services (concept to execution), supported by in-house civil engineering, construction supervision, asbestos diagnostics, and pre/post-work condition surveys, with BIM-enabled (Revit, Civil 3D) and drone-based inspection capabilities.
Is Willi Engineers a public or private company?
Willi Engineers is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Willi Engineers founded?
Willi Engineers was founded in 1983. It employs 11 to 50 people.
Where is Willi Engineers based?
Willi Engineers is headquartered in Montreux, Switzerland, in the Europe region.
How does Willi Engineers make money?
One revenue line is on record: engineering Consultancy Services.
Who are Willi Engineers's main competitors?
Direct peers on record are BG Ingénieurs Conseils, CSD Ingénieurs, Emch + Berger, Basler & Hofmann, Gruner (Stucky) and Prona AG. Timbatec Holzbauingenieure is listed as an emerging player. Broad incumbents are Arcadis, AFRY and Ramboll.
Does Willi Engineers have an API?
No public API is recorded for Willi Engineers.
What industry is Willi Engineers in?
Willi Engineers's product category is Civil and Structural Engineering Services. Its primary akta.pro industry code is BPAHAIAA, Civil & Structural Engineering Consulting. Its NAICS code is 541330 and its SIC code is 1700.