Engineer in
Olten

46 companies in Engineer based in Olten — name and year of registration from the commercial register. The list below shows them all.

Companies

All 46 companies in Olten

Neosys AG Logo

Neosys AG

Since 2001 · 21–50 empl.5.0(11)

The company provides consulting and services in the areas of environmental protection, sustainability and risk management. The core activities include: Environmental and energy consulting, Life cycle assessments and sustainability reporting, Occupational hygiene and indoor pollutants, Social responsibility and sustainable development, Compliance and risk management, particularly in the area of international guidelines and laws (e.g. human rights, child labor). The company supports companies and organizations in the implementation of sustainability strategies and compliance with environmental and social standards.

Management consultantESG/CSR and SustainabilityEnvironment & EnergyLegal Compliance & Management Systems
ranQ Trust Score 4.5 out of 5.0, rated Excellent, Rank #1
eqe AG Logo

eqe AG

Since 2012 · 11–20 empl.4.3(12)

eqe AG plans and implements industrial and process-engineering plants and works in nuclear technology. Its services include engineering, project and quality management, manufacturing, assembly, maintenance, personnel services and adult education; it also supplies valves, rupture discs, fittings and accessories.

EngineerEngineeringProject ManagementQuality Assurance
ranQ Trust Score 4.2 out of 5.0, rated Very high, Rank #2
Axalp Technologies AG Logo

Axalp Technologies AG

Since 2020 · 1–10 empl.5.0(7)

Axalp Technologies AG develops and builds engineering solutions for unconventional aircraft, including drones and electric and hybrid aircraft and eVTOLs. Its services range from concept development and design to the integration of airframes and systems, testing and flight trials.

EngineerMechanical & Structural DesignFlight Physics & SimulationGNC and Flight Control Systems
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #3
ASPES Ingenieurunternehmung AG Logo

ASPES Ingenieurunternehmung AG

Since 1989 · 1–10 empl.

The core activity of ASPES AG is engineering services in specialized areas, particularly: * Type certification of light aircraft and rail vehicles * Noise measurement and reduction for light aircraft * Energy storage * Fiber-reinforced plastics The company provides consulting services in these areas.

EngineerConsulting for type approval of light aircraft and rail vehiclesSound level measurement and reduction for light aircraftConsulting in energy storage
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #4
SC+P Sieber, Cassina + Partner AG Logo

SC+P Sieber, Cassina + Partner AG

Since 1991 · 11–20 empl.

SC+P Sieber, Cassina + Partner AG is an engineering and consulting firm providing services in geology, geotechnical engineering, landfill engineering and environmental disciplines. Services include environmental impact assessments, contaminated-site investigations, waste and landfill planning, geological and hydrogeological studies, and geotechnical consulting with construction supervision.

EngineerEnvironmental impact and risk analysesContaminated sites and landfill planningGeology and hydrogeology
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #5
Ingenieurbüro Christian Amoser Energie-Ing. NDS HTL Logo

Ingenieurbüro Christian Amoser Energie-Ing. NDS HTL

Since 1998 · 1–10 empl.

Ingenieurbüro Christian Amoser Energie-Ing. NDS HTL is an engineering consultancy focused on energy efficiency. Its services include energy consulting and planning, energy concepts, and energy performance documentation.

EngineerEnergy consultingEnergy planningEnergy concepts
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #6
Ingenis AG Logo

Ingenis AG

Since 2001 · 11–20 empl.

Ingenis AG is an engineering consultancy specialising in technical and scientific calculations and simulations. It analyses and optimises technical structures using finite element analysis, static and dynamic analyses, and strength and fatigue-life assessments.

EngineerAnalytical calculationsStrength, fatigue life and stability analysesVibration, dynamics and seismic analyses
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #7
TRANSOPTIMA GmbH Logo

TRANSOPTIMA GmbH

Since 2007 · 1–10 empl.

TRANSOPTIMA GmbH provides planning, consulting and research services in transport modelling, transport planning and behavioural analysis. Its activities include developing transport models and forecasts, conducting surveys, and analysing traffic engineering and transport management measures.

EngineerTransport planningTransport economicsTraffic engineering and traffic management
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #8
Bauphysik Schweiz GmbH Logo

Bauphysik Schweiz GmbH

Since 2013 · 11–20 empl.

The core activity of Bauphysik Schweiz GmbH is the building physics planning and consulting for high-rise construction projects in Switzerland. Specifically, this includes the creation of certificates and consulting in the areas of energy efficiency (energy certificate, Minergie applications, subsidy applications), acoustics (sound insulation certificates, room acoustics measurements), building physics inspection of constructions and materials, optimization of building envelopes and thermal insulation concepts, damage analysis and moisture measurements. The company thus offers comprehensive services for the planning and realization of energy-efficient and acoustically optimized buildings in Switzerland.

EngineerEnergy assessmentMinergie applicationsAcoustic insulation evidence
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #9
Nabla Ingenieure GmbH Logo

Nabla Ingenieure GmbH

Since 2015 · 11–20 empl.

Nabla Ingenieure GmbH provides engineering services for transport and infrastructure facilities. Its work includes tunnel ventilation and building-services planning, safety and risk assessments, and support for facilities during operation.

EngineerTunnel ventilationRisk & SafetySupport for operations
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #10
Partner Ingenieure AG Logo

Partner Ingenieure AG

Since 2020 · 1–10 empl.

Partner Ingenieure AG provides consulting, electrical engineering and training in building services engineering. It supports clients, architects and property managers from project development through operational optimisation, and plans new builds, conversions and renovations.

EngineerAdvisory ServicesElectrical EngineeringContinuing Education
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #11
RSK Environment Switzerland GmbH Logo

RSK Environment Switzerland GmbH

Since 2020 · 11–20 empl.

The company RSK offers a wide range of services focusing on environment, health and safety. The core activities include: Laboratory testing (Radiological Services, Geotechnical Testing, Materials Testing, Molecular Diagnostics); Environmental protection and disaster response (Spill and Pollution Response); Design and consulting (Principal Designer and CDM Advisor); Digital services (Digital, Media and Design, Communications, Information Management, Software Design and Development); Sustainability reporting and strategy. Overall, the company's focus is on providing comprehensive solutions for businesses and organizations to meet their environmental, health and safety requirements.

EngineerEngineering and Design ConsultingEnvironmental ConsultingEnvironmental Solutions
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #12
eicher+pauli Olten AG Logo

eicher+pauli Olten AG

Since 2017 · 101–500 empl.5.0(2)

eicher+pauli Olten AG provides planning and consultancy for energy, building services and infrastructure projects as an integrated planner. Services include energy strategy, building technology, data and process analysis, and the use of digital methods such as BIM and system simulation to develop energy-efficient solutions.

EngineerBuilding servicesEnergy planningEnergy concepts
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #13
ABYLLE Software Technologies GmbH Logo

ABYLLE Software Technologies GmbH

Since 2021 · 11–20 empl.

The company offers services in the field of digital transformation and engineering, particularly in the automotive, manufacturing, e-commerce, and banking and finance industries. The core activities include: Engineering Services, including Digital Transformation, Revolutionizing Connectivity, Data & Analytics, Experience (UI/UX), Quality Engineering, and Precision Crafting; Technology expertise in SAP S/4 Hana, Salesforce, Microsoft, Open Source, PHP, Automation, Internet of Things, and Mobile Application; and Quality Engineering (Services) and Intelligence Engineering. The company thus offers a wide range of services in the field of digital transformation and engineering, with a focus on the above-mentioned industries and technologies.

EngineerConsulting for SAP S/4HANADigital Engineering and Software DevelopmentIT Operations and Managed Services
ranQ Trust Score 4.0 out of 5.0, rated High, Rank #14
Spektrum Geophysik AG Logo

Spektrum Geophysik AG

Since 2022 · 1–10 empl.

Spektrum Geophysik AG provides geophysical services for natural hazards and geotechnical applications. It investigates and monitors slope instabilities, permafrost and vibrations, using seismic and other geophysical methods.

EngineerGeophysical analyses for natural hazards and geotechnicsCharacterisation of slope instabilitiesSeismic monitoring
ranQ Trust Score 4.0 out of 5.0, rated High, Rank #15
Schmutz + Partner Brandschutz AG Logo

Schmutz + Partner Brandschutz AG

Since 2023 · 1–10 empl.

Schmutz + Partner Brandschutz AG is an engineering and specialist planning firm for fire suppression systems and technical fire protection. Services include consulting, condition assessments, design and planning of gas, sprinkler and water‑mist systems, inspection and optimisation of existing installations, and project support through implementation.

EngineerConsultingCondition assessmentsGas extinguishing systems
ranQ Trust Score 4.0 out of 5.0, rated High, Rank #16
Unirail AG Logo

Unirail AG

Since 2022 · 1–10 empl.

Unirail AG supports railway technology projects through project management and specialist coordination. Its services include fleet introductions, vehicle commissioning and approval processes, and engineering for maintenance concepts and railway-related certifications.

EngineerProject managementFleet introductionEngineering
ranQ Trust Score 3.9 out of 5.0, rated High, Rank #17
Schmutz + Partner Energietechnik AG Logo

Schmutz + Partner Energietechnik AG

Since 2024 · 1–10 empl.

Schmutz + Partner Energietechnik AG provides engineering services in energy technology, including heating system design, climate and cooling planning, and the preparation of energy performance certificates (Energienachweise and Minergie). Services also include underfloor heating design, energy consulting, MSRL planning and condition analyses.

EngineerHeating planningAir-conditioning and refrigeration planningEnergy consulting
ranQ Trust Score 3.9 out of 5.0, rated High, Rank #18
Schmutz + Partner Gebäudetechnik AG Logo

Schmutz + Partner Gebäudetechnik AG

Since 2024 · 1–10 empl.

Schmutz + Partner Gebäudetechnik AG is an engineering firm for building services that provides planning, consulting and specialist coordination in areas such as sanitary systems, sewer planning, water hygiene and 3D/BIM planning. The company carries out condition analyses and supports projects from consultation and design through implementation for residential, industrial, laboratory and hospital buildings.

EngineerPlumbing planningSewerage planningSpecialist coordination
ranQ Trust Score 3.9 out of 5.0, rated High, Rank #19
AESCHLIMANN ENGINEERING AG Logo

AESCHLIMANN ENGINEERING AG

Since 2012 · 11–20 empl.5.0(1)

AESCHLIMANN ENGINEERING AG is an engineering firm specializing in sanitary building-services planning, providing services such as sanitary system design, fire-protection planning, sewer and utility-line design, and sprinkler system planning.

EngineerSanitary installationsFire protectionSewer and utility service lines
ranQ Trust Score 3.9 out of 5.0, rated High, Rank #20
ROTACS GmbH Logo

ROTACS GmbH

Since 2023 · 1–10 empl.

ROTACS GmbH provides radiation protection services for companies deploying personnel at nuclear facilities. Its services include training, advice from radiation protection experts, and support with permits, dose records and operating procedures.

EngineerRadiation protection consulting and servicesRadiation protection training and coursesAuthorization and administration service for radiation protection
ranQ Trust Score 3.9 out of 5.0, rated High, Rank #21
Brunner Engineering AG Logo

Brunner Engineering AG

Since 2015 · 11–20 empl.5.0(1)

Brunner Engineering AG is a building-services engineering firm offering energy consulting, heating, ventilation and cooling services. Its work includes energy concepts, subsidy applications, heat pumps, district heating, and ventilation and cooling systems.

EngineerEnergy consultingHeating system designVentilation system design
ranQ Trust Score 3.9 out of 5.0, rated High, Rank #22
WENGET GmbH Logo

WENGET GmbH

Since 2026 · 1–10 empl.

WENGET GmbH plans, optimizes and rehabilitates building technology and building automation for properties in German-speaking Switzerland. The company offers, among other things, energy consulting, GA planning, operational optimization, as well as quality assurance and coordination of renovation projects.

EngineerBuilding Automation Consulting & PlanningEnergy Consulting, Monitoring & Operational OptimisationHydraulic Performance Measurement & Analysis
ranQ Trust Score 3.6 out of 5.0, rated Solid, Rank #23
AB

Aufzugsservice Bell

Since 2026 · 1–10 empl.

Erbringung von Service- und Reparaturarbeiten, einschliesslich Schachtreinigung, Modernisierung und Beratung für Aufzüge und Kleingüteraufzüge sowie aller damit zusammenhängenden Dienstleistungen.

Machine repair
No score yet
GEA Consulting GmbH Logo

GEA Consulting GmbH

Since 2012 · 1–10 empl.

GEA Consulting GmbH advises businesses on the transport of dangerous goods and waste disposal. Its services include dangerous goods management, audits and risk analyses, as well as waste consultancy and training on applicable regulations.

EngineerDangerous goods and waste advisoryExternal dangerous goods safety adviserIn-house training
No score yet
Holzer Bauberatung GmbH Logo

Holzer Bauberatung GmbH

Since 2018 · 1–10 empl.

The core activity of Holzer Bauberatung GmbH is the provision of consulting services in the field of construction.

EngineerConstruction consulting
No score yet
FWP GmbH Logo

FWP GmbH

Since 2019 · 1–10 empl.

The core activity of FWP GmbH is the planning of district heating systems and energy distribution systems, including strategic planning, execution and handover of projects. They also offer services such as analysis and optimization of pipeline networks, planning of heat and cold distribution systems, as well as the creation of static proofs for pipelines.

EngineerClient consultingDesign of district heating and cooling networksProject management and specialist design for energy distribution systems
No score yet
Schaffner Smart Solutions AG Logo

Schaffner Smart Solutions AG

Since 2019 · 1–10 empl.

The company provides consulting and development services in the fields of energy, process technology and safety. The core activity includes the development of intelligent and sustainable solutions for the efficient and environmentally friendly production and use of energy, particularly in the area of renewable energies and decarbonization. This also includes advising customers on the implementation of energy projects, developing new processes and technologies, and supporting customers in adapting to legal and regulatory requirements.

EngineerEnergyProcess and plant engineeringTechnology assessment
No score yet
Structura C GmbH Logo

Structura C GmbH

Since 2022 · 1–10 empl.

Structura C GmbH distributes sustainable building materials, particularly hemp-and-lime composites for building insulation. It also provides technical advice and support with the planning and implementation of construction projects.

EngineerNatural composite materials from hemp and limeInsulation solutions for new build and renovationThermo-render for interior and exterior walls
No score yet
Konzept E AG Logo

Konzept E AG

Since 2023 · 1–10 empl.

Konzept E AG develops and plans energy projects, with a focus on photovoltaics and the use of renewable energy. The engineering company prepares concepts for energy communities, billing solutions and the integration of storage, electric mobility and heat pumps, and can also support project implementation.

EngineerSolar PV potential analysis and feasibility conceptsPlanning and development of energy projectsAdvisory for self-consumption communities and local energy communities
No score yet
idp invent ag Logo

idp invent ag

Since 2012 · 1–10 empl.

Rights management
No score yet
S&

S & V Engineering AG

Since 1991 · 1–10 empl.

Engineer
No score yet
H-

HW - Industrietechnik GmbH

Since 1994 · 1–10 empl.

Engineer
No score yet
S&

Studer & Partner AG, Ingenieur- & Beratungsunternehmung

Since 1996 · 1–10 empl.

Engineer
No score yet
CT

cva technical consulting ag

Since 1999 · 1–10 empl.

Engineer
No score yet
FD

Frey-con Dipl. Ing. ETH

Since 2005 · 1–10 empl.

Engineer
No score yet
CS

CERTIFER Schweiz GmbH

Since 2008 · 1–10 empl.

Engineer
No score yet
RF

R. Furrer Bauherrenberatung GmbH

Since 2012 · 1–10 empl.

Engineer
No score yet
TG

techperts GmbH

Since 2014 · 1–10 empl.

Engineer
No score yet
NG

Normal GmbH

Since 2015 · 1–10 empl.

Research institute
No score yet
WG

Wicki-Wyss GmbH

Since 2015 · 1–10 empl.

Engineer
No score yet
SP

SLG Projects GmbH

Since 2017 · 1–10 empl.

Engineer
No score yet
EE

eugster engineering GmbH

Since 2021 · 1–10 empl.

Engineer
No score yet
AI

AC I SK Holding AG

Since 2021 · 1–10 empl.

Engineer
No score yet
KE

Krasniqi Engineering & Solutions

Since 2024 · 1–10 empl.

Engineer
No score yet
TE

Transoptima Expert GmbH

Since 2025 · 1–10 empl.

Engineer
No score yet

Engineer in Olten

46EngineerCommercial register (Zefix) · as of November 6, 2026
2016Median year of registrationCommercial register (Zefix) · as of November 6, 2026
390in the Canton of SolothurnCommercial register (Zefix) · as of November 6, 2026
16,286in SwitzerlandCommercial register (Zefix) · as of November 6, 2026
Locations

Engineer in the region

Point size by number of companies per place.

Source: commercial register (Zefix) · as of November 6, 2026