DEJANTE Infra

What DEJANTE Infra does

DEJANTE Infra is a French multi-disciplinary engineering and consulting firm headquartered in Malemort (Corrèze), with origins dating to roughly 1930. The group delivers master-m'oeuvre and engineering services across four core verticals: VRD (voiries et réseaux divers, including roads and utilities), construction, water and environment, and energy. Service coverage spans the full project lifecycle from preliminary studies and schémas directeurs through detailed design and construction supervision. Specialized capabilities include geodetection and georeferencing of underground networks, topography, landscape architecture (DEJANTE Paysage), and project management assistance for public infrastructure clients.

The firm operates through branded subsidiaries that segment its vertical and regional coverage: DEJANTE VRD & Construction Sud Ouest, DEJANTE Energies Sud Ouest and Auvergne, DEJANTE Eau & Environnement Sud Ouest and Pays d'Oc, DEJANTE Paysage, and AUDRERIE (geodetection). It has eight offices across Nouvelle-Aquitaine, Occitanie, and Auvergne, including Malemort (HQ), Saint-Céré, Tulle, Naucelles, Albi, Cournon d'Auvergne, Bressols (opened 2025), and Belin-Béliet. The firm passed 100 collaborators in 2025, up from 97 in 2022.

DEJANTE generates revenue through fee-based engineering contracts, predominantly with French public-sector clients (collectivités territoriales, regional authorities) supplemented by enterprise clients such as SNCF, Enedis, AXIONE, and Bouygues Immobilier. The Bureau Veritas certification in Georeferencing and Network Detection, renewed in 2024 for a six-year term, is a key credential for regulated public procurement. Leadership transitioned from François Bray to Frédéric Poujol and Clement Dartigeas between 2021 and 2023. The firm is privately held and does not disclose revenue, funding, or backlog.

Name

DEJANTE Infra

Legal name

DEJANTE ENERGIES SUD OUEST

Website

https://dejante-infra.com

Company type

Private

Founded year

1930

Operating status

Operating

Headcount range

51–100 employees

Short description

DEJANTE Infra is a French multi-disciplinary engineering consultancy (Malemort, founded circa 1930) delivering VRD, construction, water/environment, energy, and landscape design services to public authorities and select enterprise clients across Nouvelle-Aquitaine, Occitanie, and Auvergne.

Ownership category

akta.pro rank

Product category

Infrastructure Engineering Consulting

NAICS

Architectural, Engineering, and Related Services (5413), Environmental Consulting Services (54162), Landscape Architectural Services (54132)

SIC

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

akta.pro industry

PRIMARYBPAHAIAD

Water, Wastewater & Hydraulics Engineering Consulting

Business & Public Services/Professional Services (Legal, Accounting, Consulting)/Engineering & Technical Consulting

SECONDARYBPADAEAF

Infrastructure, Engineering & Public Works Technical Assistance (WASH/Transport/Energy)

Business & Public Services/International Organizations & Development/International Development & Technical Assistance

SECONDARYHSAIABAK

Landscape Construction Project Management & General Contracting

Home & Personal Services/Landscaping, Lawn Care & Outdoor Maintenance/Landscape Design & Installation

Keywords

• Civil engineering consulting
• Infrastructure engineering services
• Water and environment engineering
• Road and utility networks
• Energy network engineering

Headquarters

HQ city

Malemort

HQ country

France

HQ region

Europe

Offices8 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Engineering & Consulting Services: Project-based engineering and consulting fees for infrastructure projects. Services range from preliminary studies to complete maître d'œuvre (project management) for public infrastructure projects including roads, water systems, and energy networks.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

DEJANTE Infra is a French multi-disciplinary engineering and consulting group providing infrastructure services from preliminary studies through complete project management (maîtrise d'œuvre). Its core offerings cover four domains: Voirie & Réseaux Divers (roads, urban development, civil engineering, topography), Construction (civil engineering, structural design, fluids/HVAC, construction economics), Eau & Environnement (drinking water, sanitation, stormwater management, environmental diagnostics), and Énergies (electrical distribution networks, public lighting, geodetection, underground utility network engineering). Services are delivered to French municipalities, intermunicipal syndicates, departmental councils, and private project owners across Nouvelle-Aquitaine, Occitanie, and Auvergne.

Product overview

DEJANTE Infra is a multi-disciplinary engineering and consulting group offering services across four core domains: Voirie & Paysage (Roads & Landscape), Construction (Civil Engineering), Eau & Environnement (Water & Environment), and Énergies (Energy). The company operates through specialized divisions including DEJANTE VRD & Construction Sud-Ouest, DEJANTE Eau & Environnement Sud-Ouest, DEJANTE Énergies Sud-Ouest, DEJANTE Paysage, DEJANTE Énergies Auvergne, and AUDRERIE. Services span civil engineering, construction economics, fluids/HVAC, structural engineering, topography, urban planning, landscape design, road infrastructure, diagnostics, water systems, geodetection, and utility network engineering. The group serves public and private sector clients throughout Nouvelle-Aquitaine and surrounding regions with complete engineering and project management services from preliminary studies through construction supervision.

Differentiator

Problem solved

Functional benefit

Brands

• DEJANTE ENERGIES: Energy engineering services including electricity distribution networks and public lighting
• EAU & ENVIRONNEMENT
• VRD & CONSTRUCTION
• DEJANTE PAYSAGE
• AUDRERIE

Products and services

• VRD & Construction Engineering Services (Voirie & Réseaux Divers)

Quantifiable outcome

• 97 collaborators with 34% women workforce and 37 years average age
• +1 more outcomes

Named customers10 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Nine partnerships are on record, tiered minor and core.

• Bicom StudiominorOthersWebsite development and design partner responsible for the corporate website creation and maintenance.
• AJ IngénieriecoreStrategic or Co-development PartnerCollaborated on the renaturation project of Saint-Pantaléon-de-Larche, working together on waterway restoration and green space development.
• SEVE PaysagecoreStrategic or Co-development PartnerRegular partnership on landscape and urban development projects including parks, school courtyards, and public space renovations.
• EiffageminorImplementation/ SI/ Consulting PartnerConstruction partner on the school courtyard project in Saint-Clément.
• PNR de Millevaches (Parc Naturel Régional)coreStrategic or Co-development PartnerLong-standing partnership with the regional nature park on environmental and educational projects including school renovations.
• RMCLminorImplementation/ SI/ Consulting PartnerVRD partner on the Eygurande school project.
• FAERYAminorStrategic or Co-development PartnerLighting and sound design partner for the La Roque Saint-Christophe scenography project.
• BREZACminorImplementation/ SI/ Consulting PartnerRealization partner on the tourist site scenography project.
• MAKE IT EVENTminorImplementation/ SI/ Consulting PartnerEvent technology partner for the La Roque Saint-Christophe project.

Scale indicators5 records

Recent moves7 records

Expansion highlights4 records

Broad incumbents

• Egis: French-headquartered engineering and consulting group covering transport, energy, water and urban development; directly comparable to DEJANTE's multi-disciplinary infrastructure consulting model, with broader geography and deeper public-sector relationships.
• SAFEGE (Suez Consulting): Suez-owned French engineering consultancy specialized in water, sanitation, environment and urban infrastructure; directly comparable to DEJANTE's Eau & Environnement and VRD practices, with a stronger water-cycle focus.
• Setec: French engineering group with subsidiaries (setec hydratec, setec alsia, etc.) covering infrastructure, water, energy and environment; mirrors DEJANTE's multi-subsidiary model and shares public-sector infrastructure client base.
• Tractebel (Engie Solutions): Major European engineering consultancy covering energy, water and urban infrastructure; overlaps with DEJANTE's energy and water divisions but operates at significantly larger scale as part of the Engie group.
• Artelia: Large French multi-disciplinary engineering group (water, energy, infrastructure, buildings) operating globally; comparable to DEJANTE Infra in service portfolio breadth and French public-sector client base, but materially larger in scale and geographic reach.

Direct peers

• SCE (Setec group): French engineering firm specialized in water, environment and urban infrastructure, part of the Setec group; comparable to DEJANTE's water/environment practice and public-sector service delivery model.
• Verdi Ingénierie: Mid-sized French engineering consultancy specialized in VRD, environment, energy and water; very close functional and scale match to DEJANTE Infra, both serving local authorities and public syndicates.
• Ingérop: Independently-owned French engineering firm specialized in infrastructure, water, energy and urban development; closest like-for-like peer to DEJANTE Infra given similar multi-disciplinary scope and French public-sector focus.

Emerging players

• Altereo (ex-Hydroconseil): French environmental and water engineering consultancy serving local authorities and water utilities; comparable to DEJANTE's water and environment practice, particularly on Schémas Directeurs and master planning for water systems.
• Burgeap: French environmental and water engineering consultancy with deep municipal and water utility client base; relevant emerging player comparable to DEJANTE's environmental diagnostics and water engineering services.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/groupe-dejante-infra
• Xx.com/groupedejante
• Facebookfacebook.com/Groupe-Dejante-Infra-230366790658879

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Subsidiaries7 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 DEJANTE Infra