Technical Consulting & Engineering in
Petit-Lancy

ZS Ingénieurs Civils SA

Since 1989 · 21–50 empl.·4.7(3)

ZS Ingénieurs Civils SA is a civil engineering firm that provides design and execution services for civil engineering projects. Its scope includes structural design and civil works as well as infrastructure projects such as roads, tram and rail lines, energy and distribution networks, sewage systems, river renaturation, renovations and project management.

Techfina SA

Since 1957 · 11–20 empl.

Techfina SA designs and constructs turnkey plants for drinking water treatment and wastewater treatment. Services include engineering, 3D planning, supply and installation of key components, commissioning and testing, and operational support, as well as sludge treatment, removal of micropollutants, phosphorus recovery and energy recovery.

Géotechnique appliquée Dériaz SA

Since 1975 · 11–20 empl.

Géotechnique appliquée Dériaz SA provides geotechnical and geological studies as well as hydrogeology and environmental investigation services. Its activities include site investigations and boreholes, laboratory testing, foundation and infrastructure design, in-situ monitoring and instrumentation, and construction supervision for geotechnical and underground works.

Trafitec Ingénieurs Conseils SA

Since 1988 · 1–10 empl.

Trafitec Ingénieurs Conseils SA is an engineering firm specializing in transport and mobility. The company provides network planning and public-space design, traffic management, parking studies, and consultancy on public transport, construction site coordination and impact assessments.

Videlio (Suisse) SA

Since 1999 · 21–50 empl.

The core activity of Videlio is the integration of audiovisual solutions and services for various markets and industries, including the design, installation, maintenance and support of audiovisual systems, as well as the creation of innovative work environments (Workplace) through the integration of technologies, communication and collaboration solutions.

GADZ SA

Since 2015 · 11–20 empl.

GADZ SA is an engineering firm providing geotechnical, geological and hydrogeological services. It carries out site investigations and in‑situ measurements, laboratory soil and chemical analyses, foundation and infrastructure design, tunnel and underground works, and monitoring and consulting for groundwater and environmental issues.

Hydro-Géo Environnement Sàrl

Since 2016 · 21–50 empl.

The company Hydro-Geo Environnement primarily focuses on services in the field of geosciences, particularly in the following core activities: hydrogeology, geothermal energy (both shallow, medium and deep), environmental and contaminated site consulting, geotechnics, geology-geophysics, natural hazards, and 2D/3D modeling. These activities include, among others, the investigation and evaluation of groundwater resources, the exploration and utilization of geothermal energy, the remediation of contaminated sites, consulting on geotechnical projects, as well as the exploration and evaluation of natural hazards.

B + C Ingénieurs SA

Since 1998 · 1–10 empl.

B + C Ingénieurs SA is an engineering firm presented on its website as providing engineering services with several locations in western Switzerland. The site indicates that it is being redesigned and lists the contact details of its offices.

Pywood Sàrl

Since 2020 · 1–10 empl.

The core activity of Pywood is the creation of technical solutions and plans for projects in the field of joinery (carpentry/cabinetmaking), particularly through the creation of technical drawings, 3D models and cost estimates. The company supports customers such as architects, builders, joiners and private clients in the planning and implementation of projects by offering technical and visual solutions to improve the quality and efficiency of the projects.

DAES SA

Since 2001 · 1–10 empl.·4.7(3)

DAES SA is an engineering consultancy providing numerical simulations and virtual test services for components and systems. It performs multi-physics modelling (mechanical, thermal, fluid, optical, electromagnetic, dynamic), develops custom tools and apps, and offers project support, technical assistance and training using software such as ANSYS and ABAQUS.

Hydrique Ingénieurs Civils et Environnement SA

Since 1990 · 11–20 empl.·5.0(1)

The company INGENIEURS CIVILS ET ENVIRONNEMENT S.A. is a civil engineering firm specializing in various areas of infrastructure and environmental planning. The company's core activities include: * Planning and implementation of projects in the field of water and wastewater management, including the construction of sewer networks, pumping stations, and wastewater treatment plants * Development of solutions for waste management and road construction, including the planning of landfills and the rehabilitation of roads * Preparation of energy and environmental studies, including energy audits and environmental impact assessments * Planning and implementation of construction projects, including the construction of residential and commercial buildings * Development of geographic information systems (GIS) and the execution of mapping and surveying work Overall, the company offers a wide range of services in the field of infrastructure and environmental planning and supports its customers in the implementation of projects that affect the environment and infrastructure.

ID GO Management SA, succursale de Lancy

Since 2026 · 21–50 empl.

ID GO Management SA, succursale de Lancy supports property owners in energy renovation projects for buildings. The company provides analysis, planning, execution and performance measurement for renovation and decarbonization projects.