Your Experts for the Canton of Grisons, Every Step of the Way


Our engineering office in St. Moritz, is your go-to partner for innovative and tailor-made solutions in engineering and design. Our multidisciplinary team brings together specialists in various fields, from building design and renovation to civil engineering planning and environmental studies. 

With additional offices in Poschiavo, Chur, Ilanz and Grono we ensure comprehensive and efficient service throughout the Canton of Grisons, delivering expertise, reliability, and forward-thinking solutions for every need.

A team of specialists at your service

For all your needs in design or project management, you can count on us at any time. Our team is always available and happy to assist you with any information or support you may require.

Find out more in our brochure!

A group rooted in the region, making widespread presence its greatest strength.

The group is deeply connected to our region while also contributing to national and international projects. Our clients have the opportunity to fully leverage the group’s expertise to bring future ideas to life.

Our Skills

Building construction

  • Residential buildings
  • Hotel buildings
  • Public parking garages
  • Mountain railways
  • Overall project management
  • Earthquake inspections
  • Renovations

Foundation engineering

  • Excavation pit safety
  • Sheet piling
  • Pile foundations
  • Buildings on landslide prone slopes
  • Soil samples

Transport infrastructure / civil engineering

  • Road construction
  • Railway construction
  • Condition assessment and expert reports
  • Land improvement
  • Noise protection

Hydropower

  • Project planning and construction management
  • Renovation and renewal
  • Condition assessment and expert reports
  • Concepts and studies

Hydraulic engineering

  • Flood protection
  • Renaturalization
  • Fish passes
  • Drainage concepts
  • Hydraulic drainage calculations
  • Retention and infiltration systems

Waste disposal

  • Overall project management of plants
  • Studies and expert reports

Power supply

  • Overall project planning of systems
  • Overall concepts
  • Renewal planning
  • Hydraulic network analysis
  • Quality assurance
  • Organizational model / financial planning
  • District heating

Project management

  • Client support/representation
  • Overall coordination
  • Staff functions

Key People

Markus Berweger

  • Head of office St. Moritz & Poschiavo
Email Markus Berweger
Visit LinkedIn Profile of Markus Berweger

Dominik Hool

    • Section Manager Enviroment, Natural Dangers
    Email Dominik Hool

    Giovanni Tavernelli

      • Section Manager Building Construction
      Email Giovanni Tavernelli
      Visit LinkedIn Profile of Giovanni Tavernelli

      Pierangelo Martelletti

        • Section Manager Roads
        Email Pierangelo Martelletti

        ARX Gruppe AG

        Via Cuorta 2
        7500 St. Moritz

        +41 81 837 88 00
        [email protected]