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Retas Schema AG 

Aarau · Since 1991

The core activity of Retas Schema AG is the planning, execution and commissioning of control and regulation technology for heating, ventilation and air conditioning (HVAC) systems as well as building automation. This includes in particular: creation of electrical schematics and software, delivery and installation of control and field devices as well as switchgear, commissioning and troubleshooting of systems, consulting and execution of projects in the field of HVAC and building automation. The company offers its services primarily for medium-sized and smaller projects in the Swiss Plateau region.

ReTrainEd GmbH 

Aarau · Since 2022

ReTrainEd GmbH offers practice-oriented continuing-education courses for occupational therapists and physiotherapists focused on hand rehabilitation. Courses combine theoretical and practical components and cover topics such as strength training for the upper limb and post-operative management of flexor tendon injuries, taught by specialists in hand therapy and rehabilitation science.

RGS Bahnsicherheitstechnik AG 

Aarau · Since 2005

The core activity of RGS-Bahnsicherheitstechnik AG is the planning, manufacturing, installation and maintenance of railway safety technology, in particular level crossings and switches, as well as the provision of services such as design, testing and documentation in the field of railway safety technology.

Risk&Safety AG 

Aarau · Since 2001

Risk&Safety AG is a consulting company specializing in risk management in the fields of construction, technology, and organization. The core activities include: Hazard and risk analyses, Fire protection and explosion protection, Earthquake safety and structural safety, Natural hazards and infrastructure safety, Emergency organization and crisis management, Safety management and emergency preparedness, Occupational safety and training, Research and development in the field of safety and risk management. The company provides independent consulting and supports customers in developing solutions for complex safety and risk problems.

Rizzo Treuhand GmbH 

Aarau · Since 2014

The core activity of Rizzo Treuhand GmbH is the provision of services in the areas of financial consulting, tax consulting and trust services. This includes in particular: Trust consulting and support, Tax consulting and planning for private households and companies, Financial consulting and planning, including financial management, Accounting and digital archiving of documents, Co-address service for companies, Support in the founding of companies. The company thus offers comprehensive services in the areas of financial and tax consulting and supports customers in managing their finances and meeting their tax obligations.

Robert Hauri GmbH 

Aarau · Since 1998

The core activity of Robert Hauri GmbH is the caretaking of multi-family houses, including cleaning and maintenance of properties on behalf of owners and property management companies.

Robucci & Schär GmbH 

Aarau · Since 2022

The company offers coaching services for job seekers, particularly in the areas of application strategy, self-awareness, profile creation and assessment. The core activity consists of individual accompaniment and support of persons in their job search, in order to improve their chances on the labor market.

Rolf H. Meier Mediation und Beratung 

Aarau · Since 2021

The core activity of the company 'Rolf H. Meier – Mediation and Consulting' consists of providing services in the fields of mediation, consulting and coaching, particularly in the areas of: * Owner support and cooperation models * Conflict prevention and conflict resolution * Communication and participation procedures * Coaching and leadership. The focus is on supporting companies and organizations in managing complex projects, conflicts and change processes.

Rothpletz, Lienhard + Cie AG 

Aarau · Since 1947

Rothpletz, Lienhard + Cie AG is a construction company and engineering firm that provides planning, construction and project-accompanying services for infrastructure projects. Its offerings include project engineering, civil and tunnel construction, pneumatic crane and transport services, and in-house equipment and workshop management.

RP Architekten AG 

Aarau · Since 1981

RP Architekten AG plans and delivers new-build projects and carries out renovation and conversion works on existing properties. The firm provides construction management, client-trustee services, general construction consulting and project development for multi- and single-family homes, commercial buildings and public buildings.

Rudolf Fasler Aarau AG 

Aarau · Since 1990

The core activity of Rudolf Fasler Aarau AG encompasses three main areas: 1. **Trust Services**: The company provides trust services, including financial accounting, payroll accounting, preparation of annual accounts, payroll administration, VAT declarations, and tax returns. 2. **Estate Liquidations and Consulting**: The company supports the liquidation of estates, including the settlement of estate debts, the distribution of legacies, and the division of the estate according to the instructions of the deceased or as prescribed by law. 3. **Executor Services**: The company offers executor services, including the settlement of estate debts, the distribution of legacies, and the division of the estate according to the instructions of the deceased or as prescribed by law. Overall, the core activity of the company can be described as comprehensive services in the field of estate administration and liquidation, including trust and consulting services.

SaLü Treuhand AG 

Aarau · Since 2011

The core activity of Salü Treuhand AG is the provision of trust services, including accounting, tax consulting and other related services.

Sana Novus Wettstein 

Aarau · Since 2016

The core activity of Sana Novus Gesundheitspraxis is the application of classical massage techniques to treat various health complaints, particularly back pain, stress, tension and other physical problems, with the aim of promoting relaxation, well-being and activating the entire organism.

Säuberli Renovationen 

Aarau · Since 2016

Säuberli Renovationen carries out customer masonry, plastering and painting work and provides seamless coatings for bathrooms, kitchens and floors. Services include drywall construction, wet plaster, interior insulation, mold remediation and interior/exterior painting.

Säuberli Renovationen GmbH 

Aarau · Since 2023

The core activity of Säuberli Renovationen GmbH is the execution of renovation and expansion work in the field of buildings, particularly in the areas of: seamless plastering on floors, in bathrooms and kitchens; creating and closing wall and ceiling openings; building partition walls, creating wall breakthroughs and installing steel beams; plastering work; and painting work in both interior and exterior areas. The company thus offers a comprehensive range of services for the renovation and expansion of buildings.

Sauerborn Management Consulting GmbH 

Aarau · Since 2011

The core activity of Sauerborn Management Consulting GmbH is to advise and support companies in change processes, particularly in the areas of digitalization and AI, cost reduction, IT transformation, team development, and executive coaching. The company offers services such as coaching, consulting, and training to support companies and their executives in planning and implementing changes, enabling them to successfully and sustainably implement these changes.

Sauerländer-Mangold - Büro für Geschichte - Publikationen Ausstellungen Multimedia 

Aarau · Since 1999

The core activity of Sauerländer-Mangold encompasses the conception, planning and implementation of museum projects, exhibitions and cultural events. This includes the areas of museum consulting and planning, conception and realization of permanent and special exhibitions, development of interactive learning programs and multimedia applications, museum logistics and organization, publications and releases on historical and cultural topics, historical research and text creation, didactics and education. The company also offers services in the field of collection, development and storage of cultural-historical collections.

SB Praxis für orofaciale Physiotherapie GmbH 

Aarau · Since 2015

The core activity of the company is orofacial physiotherapy, in particular myofunctional therapy, which aims to correct dysfunctions in the jaw, neck and nasal area, eliminate incorrect swallowing habits and restore balance to the orofacial musculature in order to prevent chronic complaints and avoid follow-up costs.

SBU AG 

Aarau · Since 2023

SBU AG provides engineering and consulting services for the lifecycle management of infrastructure assets, offering structural, operational, organisational, financial and sustainable solutions, with a focus on climate‑resilient urban drainage ('Schwammstadt'). Its competencies include infrastructure management and digital GEP, property drainage, operational and structural maintenance, rehabilitation and finance strategies, and sensor-based monitoring.

Schäfer Holzbautechnik AG 

Aarau · Since 2003

Schäfer Holzbautechnik AG is a timber construction competence centre providing planning, site management and execution of new builds, renovations, extensions and interior fit-outs. The company delivers timber element and modular construction, total- and general-contractor services and offers technical specialist solutions such as temporary structures, bridges and system houses. Services also include consulting, maintenance and projects using regional timber.