Engineer in
Wattwil

Preplan GmbH

Since 2017 · 1–10 empl.

The core activity of Preplan GmbH is planning and consulting in the field of building technology, particularly in the areas of energy consulting, specialist coordination, concepts and consulting, plant optimization, feasibility studies and economic analysis. The company offers its services as a building technology engineering office, covering all phases of HLKS (heating, ventilation, air conditioning, sanitation) services.

Kannewischer Ingenieurbüro AG - Zweigniederlassung Ostschweiz

1–10 empl.

Kannewischer Ingenieurbüro AG - Zweigniederlassung Ostschweiz is a building engineering consultancy focused on energy, building services and swimming pool technology. Its services include planning, specialist construction supervision and operational optimisation.

Raillard engineering

Since 1999 · 1–10 empl.

Umweltlink AG

Since 2011 · 1–10 empl.

wbb ag

Since 2017 · 1–10 empl.

Sensorplus AG

Since 2021 · 1–10 empl.

Redžic Consulting

Since 2023 · 1–10 empl.

Dr. Knopf & Oswald Schweiz GmbH

Since 2024 · 1–10 empl.

ILIEM AG

Since 2025 · 1–10 empl.