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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint744,173 companies indexed · Last updated: today
DirectoryTechnical Consulting & Engineering

Technical Consulting & Engineering

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10'496 companies found

Transthermic AG Logo

Transthermic AG 

Murten · Since 2009

The core activity of Transthermic AG is the development, manufacture and distribution of heat exchangers and heat storage systems, including removable, used and tubular heat exchangers, as well as ECS preparations and services.

Technical Consulting & EngineeringWholesale - Machinery & Technical Equipment
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Hitachi Energy Dry Transformers Switzerland SA Logo

Hitachi Energy Dry Transformers Switzerland SA 

Monteggio · Since 1967

The core activity of Trasfor is the manufacture of transformers and inductors for various industrial applications, including rail transport, offshore platforms, environmental technology, power generation and marine applications.

Technical Consulting & EngineeringElectrical Industry
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TRATEC Ingénieurs SA Logo

TRATEC Ingénieurs SA 

Fully · Since 2017

The core activity of TRATEC Ingénieurs SA is engineering services in the field of railway infrastructure, particularly in the planning, implementation and management of projects related to overhead lines and contact wires. The company offers a wide range of services, including project planning, implementation and management, engineering services, consulting and support in the creation of projects, as well as the creation of plans, documents and reports.

Technical Consulting & Engineering
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Tratus AG Logo

Tratus AG 

Altdorf Ur · Since 2016

The core activity of TRATUS AG is the provision of services in the field of transportation planning and traffic engineering. This includes in particular: traffic analysis and concepts, transportation planning and engineering, design and planning of road spaces and parking facilities, traffic technical assessments and safety audits, review of construction projects and signaling plans, mobility concepts and transportation concepts. The company offers these services to public and private project sponsors and has in-depth project experience and knowledge in the classical disciplines of transportation planning.

Technical Consulting & EngineeringCivil Engineering Firms
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TR Consulting Sàrl Logo

TR Consulting Sàrl 

Martigny · Since 2021

TR Consulting Sàrl provides consulting services in civil engineering, building and public works. Its services include project studies and design, construction supervision and owner’s representative (AMO) roles, preparation of technical reports and structural assessments, and advisory work for transport infrastructure, environmental and energy engineering.

Technical Consulting & Engineering
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Treeze GmbH Logo

Treeze GmbH 

Uster · Since 2012

The core activity of treeze Ltd. is consulting and research in the field of Life Cycle Assessment (LCA), particularly in the areas of environmental assessment, product development, corporate management and political decision-making. The company offers services such as Life Cycle Inventory Analysis, Life Cycle Impact Assessment, Carbon Footprint, Water Footprint and Labelling. It supports customers in the application of LCA methods and also provides training and coaching.

Technical Consulting & EngineeringSustainability Sector
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Trefzer Rosa + Partner GmbH Logo

Trefzer Rosa + Partner GmbH 

Nusshof · Since 2003

The core activity of Trefzer Rosa + Partner GmbH is consulting and conducting measurements in the field of acoustics and vibration technology, particularly in the areas of: noise assessments and noise reduction for companies and municipalities, analysis and reduction of industrial noise in factory halls and workplaces, acceptance measurements in public transport, assessment of noise and vibration emissions from roads and railways, investigation of vibration and structure-borne sound propagation in buildings and vehicles, measurement and analysis of machine noise. The company thus offers comprehensive services in the field of noise control and vibration technology.

Technical Consulting & Engineering
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Trenn-Sie-Pack Cardone Logo

Trenn-Sie-Pack Cardone 

Beringen · Since 2012

The company's core activity is the consulting, development and manufacturing of cutting and sealing tools for packaging machines, in particular the production of precision parts such as hot and cold seals, machine knives, surface coatings and special tools.

Technical Consulting & Engineering
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TRE Rohrbach AG Logo

TRE Rohrbach AG 

Steinmaur · Since 1990

The core activity of TRE Rohrbach AG is the development, manufacture and distribution of lighting solutions, particularly LED products, for the B2B sector. The company offers standardized products, individual lighting concepts and lighting renovation services, positioning itself as a partner for lighting in Switzerland.

Technical Consulting & EngineeringWholesale - Electronic Devices
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Tresch + Kieliger GmbH Logo

Tresch + Kieliger GmbH 

Rapperswil Sg · Since 2006

Tresch + Kieliger GmbH designs and manufactures test rigs, test-cell infrastructure and rig components for high-temperature and high-pressure applications, including probes and instrumentation feedthroughs. The company provides engineering services such as feasibility studies, FEA/CFD simulations, risk assessments, procurement, and assembly/commissioning, and works on combustion systems and renewable synthesis-gas generation technologies.

Technical Consulting & Engineering
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Tresch + Kieliger GmbH Logo

Tresch + Kieliger GmbH 

Egliswil · Since 2006

Tresch + Kieliger GmbH is an engineering firm that develops and manufactures test rigs, test-rig infrastructure and related components for high-pressure and high-temperature applications. Services include feasibility studies, design and development, FEA/CFD calculations, risk assessments, procurement and assembly/commissioning, and the company supplies probes, feedthroughs, burners and pressure vessels.

Technical Consulting & Engineering
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Treuthardt Applications Logo

Treuthardt Applications 

St-Aubin Fr · Since 2020

The core activity of Treuthardt Applications is the development of automation solutions, particularly in the following areas: programming of PCs and APIs according to IEC 61131-3, machine conformity (machine adaptation), programming of 4 to 6-axis robots (Stäubli), programming of machine vision systems, and electrical cable installation. The company thus offers specialized services in the field of automation technology.

Technical Consulting & Engineering
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TRIATEC Consulting GmbH Logo

TRIATEC Consulting GmbH 

Regensdorf · Since 2014

The core activity of TRIATEC Consulting GmbH is consulting and providing services for environmentally related issues and tasks from the real estate sector, construction industry and waste management. In particular, this includes the investigation of contaminated sites (legacy sites) and buildings, the monetary valuation of properties and real estate within the framework of environmental due diligence (EDD) as well as the analysis and evaluation of environmental factors such as soil protection, building pollutants and waste management.

Technical Consulting & Engineering
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Triform S.A. Logo

Triform S.A. 

Fribourg · Since 1991

Triform S.A. is an engineering consultancy specializing in water management and related environmental issues. The firm provides services in wastewater treatment, surface water management and urban hydraulics, supporting projects from feasibility studies through implementation.

Technical Consulting & Engineering
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Triform S.A., succursale de Lausanne Logo

Triform S.A., succursale de Lausanne 

Lausanne · Since 2000

Triform S.A., succursale de Lausanne is an engineering and consultancy firm focused on water; it provides planning and project delivery in wastewater treatment, surface-water management and urban hydraulics for public and private clients.

Technical Consulting & Engineering
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TRIFORM EA SA Logo

TRIFORM EA SA 

Fribourg · Since 2024

TRIFORM EA SA is an engineering consultancy providing advisory, planning and implementation services in the water sector, notably wastewater treatment, surface water management and urban hydraulics.

Technical Consulting & Engineering
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Trinkwasser-Consulting GmbH Logo

Trinkwasser-Consulting GmbH 

Frenkendorf · Since 2019

The core activity of Trinkwasser Consulting GmbH is consulting and supporting in the field of drinking water, particularly in matters of drinking water supply, treatment and safety.

Technical Consulting & Engineering
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trinovent GmbH Logo

trinovent GmbH 

Oberengstringen · Since 2014

The core activity of BlackIce is mechanical engineering, particularly the development and provision of services in the field of mechanical engineering, such as the development of concepts, design and calculation of components, contracting and project management.

Technical Consulting & Engineering
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Trokay Expertise Sàrl Logo

Trokay Expertise Sàrl 

Yvonand · Since 2014

The core activity of Trokay Expertise Sàrl is the provision of independent expert opinions and services in the field of real estate. This includes in particular: Technical expert opinions (e.g. defect analyses, thermographic inspections, physical inspections of buildings), Legal expert opinions (e.g. examination of easements, assessment of building rights), Economic expert opinions (e.g. valuation of properties, analysis of value development). The company offers these services to both private property owners and public institutions, notaries, lawyers and property managers.

Technical Consulting & EngineeringTesting & Inspection Centers
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trüb & klar AG Logo

trüb & klar AG 

Lucerne · Since 2022

The core activity of trüb & klar AG is the planning, consulting and implementation of projects in the field of water development and rehabilitation, particularly the renaturation of streams and rivers, as well as the prevention and control of natural hazards such as floods. The company offers services such as consulting, basic studies, design, execution and monitoring of water projects, with the aim of creating and maintaining near-natural waters.

Technical Consulting & Engineering
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Frequently asked questions

Searching the directory

How the search works, what each filter means, and how the results come together.

What can I search for in the directory?
The search field matches company names, industries and places. Beyond that you can filter by Industry (18 categories based on the NOGA classification), Size (number of employees), Region (canton, language region or postal code) and Special (keywords and entry date). Filters combine freely; the active ones appear as chips below the filter bar and can be removed there individually.
How do keywords work?
Keywords search the description and stated purpose of each company — the text that goes beyond the company name. Multiple keywords are combined with OR: every additional keyword widens the set of matches rather than narrowing it.
What belongs in the postal code field?
A single postal code (e.g. 8000) or a range (e.g. 1000-1010). The field accepts postal codes only — for place names, use Canton or Language region.
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How is organisation size determined?
Size reflects the number of employees and is calculated from publicly available information by a model developed in-house. It is a best-possible estimate, not an official figure.
What does the Verified label mean?
Verified means the entry is tied to a UID (Swiss business identification number) and therefore links back to the official Swiss business register. The label speaks to the company's identity — it is not a rating of its performance.

Source: Federal Statistical Office, UID register

How do I sort the results?
Use the dropdown above the list: Relevance, Name (A–Z), Best rating, Most reviews or Longest established. You can also switch between list and map view and set how many results appear per page.
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