gammaRenax brings together people from 62 nations in one corporate culture.

Company management

Severin Gallo


Alex Müller

Finance and HR

Rosita Morabito

Facility Services 1

Fabio Abate

Facility Services 2

Fabio Esposito

CEO clean&soft AG

People, Values, Objectives

People, Values, Objectives ... from the customer's - perspektive ... from the employee's - perspektive ... from the stakeholder - perspektive
Crediblitiy I trust them They deserve my trust They are dependable
Focus They see things the way I do They value my contribution I achieve my goals with them
Transparency They allow me insight I’m always kept informed They include me
Respectfulness They take me seriously I am somebody They value me
Pioneering & innovitive They anticipate my needs They expect me to be dynamic They challenge me
Everything from one source They take care of everything for me They pull together with me They make me part of the team
Local-regional-national Their key account manager is there for me I am recognized everywhere I grow along with them

Board of directors

Karel Strub

Chairman of the Board of Directors (member since 2005)

«As one who is independent from the industry, my role is to constructively, critically and uncompromisingly question all business decisions and to inject what I’ve learned through my experience.»

Severin Gallo

CEO, Member of the Board of Directors (since 1997)

«What fascinates me most about my work is the focused effort, in collaboration with our personnel, to solve the challenges that each new day brings.»

Hugo Gallo

Founder and Member of the Board of Directors (since 1985)

«I don’t like the word ‘quitting’. When there’s a problem to be solved, I won’t let it go – and when everything is running smoothly, it’s too much fun to quit!»

Edward Schwarz

Member of the Board of Directors (since 2002)

«Strategies and systems are indispensable. The communication and sustainable & effective implementation of these is central – to the benefit of our employees and clients alike.»

Philippe Vignon

Member of the Board of Directors (since 2017)

«With formalized work processes and strong support from its employees, gammaRenax offers high-quality services with a single objective: customer satisfaction. My priority is to support the development of the company in French-speaking Switzerland.»

Mission statement

The corporate culture of gammaRenax is based on three pillars:



We provide consulting and plan the building cleaning, facility maintenance, and construction & façade cleaning services which we deliver from our widely spanned locations. By implementing customer-oriented innovations, we constantly improve our facility services.



We maintain performance-oriented partnerships with our clients, suppliers and employees. Through continuous accessibility, regular dialogue and openness, we continually deepen the mutual trust.



We recognise our employees as the chief bearers of our value propositions. Through specific selection, continuing training, target-oriented management and fair compensation, we deliver very high performance in terms of quality, ecology and occupational health & safety – resulting in a high level of customer satisfaction.

Certified systems

In order to provide top-quality services, our occupational health & safety, environmental protection, energy efficiency and ethical principles form the backbone of gammaRenax's certified management system.



Our management system ensures that all employees have access to all the information they need to provide their services in accordance with high quality standards. The optimisation of our working processes is always at the centre of our services.


Environment and energy

Sparing and sensible use of resources has a positive effect on the health of our personnel, the environment, energy consumption – and ultimately the budgets of our clients.



The occupational health & safety of our employees is an indispensable part of our corporate responsibility.



Employee satisfaction is just as important to us as our corporate social responsibility. We handle all ethical issues in accordance with ISO 26000 (corporate responsibility).

Focused on customer needs for decades

In 1968 Renax Ltd., a subsidiary of the former Swissair, began its facility maintenance activities as a cleaning company in Kloten. In 1985 Hugo Gallo founded Gamma Reinigungen Ltd. in Zurich after having been active in the branch since 1972. From the beginning, his goal was to meet individual customer needs. This vision, along with the growing demand for cleaning services, has fuelled the continual expansion of Gamma Reinigungen.

In 2001 Gamma Reinigungen Ltd. merged the two cleaning companies with Renax Ltd., acquired in 1994, to form gammaRenax Ltd.. In 1997 the second generation took over: Severin Gallo, dipl. structural engineer ETH, became CEO of gammaRenax and expanded the market area to the whole of Switzerland. Additional services such as caretaking, landscaping maintenance and winter services were introduced. In 2004 the subsidiary clean&soft Ltd. was established for hygiene services.

Today, gammaRenax, with its head office in Dübendorf, Switzerland, is an integrated facility services provider with 1,760 employees and 14 offices covering the entire country. Addressing and fulfilling customer wishes continues to be the basis of continuous business growth even after decades of operation.

gammaRenax is involved in associations

Joint efforts to further the development of industry standards: gammaRenax is actively committed to the following associations and institutes:


gammaRenax collaborates in partnership with suppliers.


gammaRenax shares its success by regularly supporting associations and institutions in their work.