Civil Engineering in
Wallisellen

Keller-Frei AG

Since 2012 · 51–100 empl.·4.0(53)

Keller-Frei AG is a construction company performing road and civil engineering works. Its services include building and maintaining roads, utility and drainage infrastructure, surface paving and public squares, and maintenance, repair and renovation of existing infrastructure.

Reparatur- und Sanierungstechnik Nord AG

Since 1987 · 1–10 empl.

The core activity of RSAG Schweiz is the renovation and repair of traffic areas, particularly through the processing of special bitumen and synthetic polymers for customized solutions in the construction and renovation of civil engineering structures, roads and traffic areas.

Opus AG Bauunternehmung

Since 2007 · 11–20 empl.

The core activity of OPUS AG is construction, particularly the planning and execution of construction projects in the Glattal region. The company offers comprehensive construction expertise and covers all phases of a construction project, from planning to execution.

Flexbelag-Bau AG Zürich

Since 1981 · 21–50 empl.·3.4(5)

Flexbelag-Bau AG Zürich is a construction company providing road construction, civil engineering and structural renovation services. Its offerings include paving and public-space works, utility and district-heating pipelines, concrete and bridge repairs, waterproofing and injection solutions; the firm delivers project planning and general/total contractor services and holds ISO 9001 and ISO 14001 certifications.

Cableswiss AG

Since 2023 · 1–10 empl.

The core activity of Cableswiss is the planning, construction, expansion and modernization of telecommunications networks, particularly through network construction and cable laying work, as well as related services such as line construction, shaft construction, testing, calibration and equipping of pipeline systems, core drilling, excavation and paving work, landscaping, house connections and sealing.

Räber AG, Zürich

Since 1978 · 1–10 empl.