Getting started at Gassner


Become a part of our Gassner team – with the full power of the Alois Müller Group supporting you!

Focus on energy. The Alois Müller Group has twelve locations and employs over 500 people, all of whom follow this principle.
Having grown from a traditional family business into a medium-sized company, we adhere to a philosophy of holistic sustainability. Our areas of expertise include heating technology, ventilation technology, sanitary engineering, refrigeration technology, electrical engineering and systems engineering. We also specialise in energy contracting and have our own CO2neutral and energy-self-sufficient production facility.
We believe in a strong future and are working towards this future day by day by completing sustainable projects with energy and passion. Our services are proving their effectiveness at small private structures, public buildings and even large industrial projects.

Get an idea of the opportunities awaiting you at Gassner in Kempten. The career portal of the Alois Müller Group gives you a comprehensive overview of all the vacancies at all locations.

Image. Trainee welds a heart out of pipes at the trainee fair.

Your start to a successful career

Training and studies

Gassner GmbH. In the middle of the Allgäu region. At the very centre of the promising industry itself. Energy and sustainability.


The unbeatable career outlook for the future. Whether you have solid commercial or business training – reach for the stars with the power of yellow and become part of a strong team.

Co-operative study programme

Or a co-operative study programme. It has many advantages: a regular income and the perfect combination of theoretical and hands-on learning – a reliable outlook.
We are partners of the Ravensburg University of Applied Sciences and Biberach University of Applied Sciences as well as practical partners of the BA Sachsen (Saxony University of Cooperative Education) – The choice is yours!

Image Training to become a systems mechanic at Alois Müller

Fascination Solid materials

Vocational training programs

Systems mechanic
Systems mechanics for plumbing, heating and air-conditioning technology perform installation, service and repair for water and air supply systems such as air-conditioning systems, bath tubs and showers as well as heating systems and renewable energy sources such as solar plants.

Technical system planner for supply and equipment engineering
Technical system planners for supply and equipment engineering plan heating and lighting systems, sanitary facilities and air distribution systems. As a technical system planner, you will create technical drawings, functional schematics and assembly plans.

Management assistant for office management
Management assistants for office management work in almost all commercial enterprises in the areas of industry and retail, public service and skilled trades. Your tasks would be highly varied: In addition to office communication and organisational tasks, your scope of duties would also include accounting, bookkeeping, personnel management and customer support.

Take a look around

Holiday jobs and internships

Whether you are just looking to get a feel for your dream career by taking an internship or a holiday job, visit us at various recruitment fairs or send in your application right away – we are glad you are interested!
How about a trial internship?
During your time at school, you have the option to learn about potential vocational training programs. An internship is the ideal program. That’s because it gives you the chance to become familiar with the job as well as something equally important: the people who work there.

Or are you looking for a holiday job?
Are you at least 18 years of age and do you want to earn money by working for us during a pupil or student holiday, for example? This type of job will give you the opportunity to get your feet wet in our industry.

Interested in a holiday job or internship?
Then send us an application directly through our online portal. Duration and Department by arrangement.

Imagebild zur Ausbildung. Azubi vor einem Regal.
In the training centre of the Alois Müller Group in Ungerhausen, the trainees learn practical skills

Employee qualification

Energy Academy

We place great value on the continuous training and professional development of our employees, whether in the business or commercial area. Shortage of skilled workers? Our answer: Create development opportunities!
With this aspiration, we create space and opportunity for every single employee. From training to a leading position within a few years. At our company, effort and dedication pay off.
Our in-house Energy Academy provides our employees with just the right platform for ongoing, qualified further education and training.

Innovative technologies are constantly changing. Thanks to the Energy Academy we are capable of teaching our employees about the latest developments directly. Practising continuous communication and bundling expertise – that is what the quintessential qualification process of today looks like!

What’s more, the Energy Academy is regularly used as a venue for events. At these events, customers and partners learn about the topic of energy and all of the current and future trends pertaining to it. Get to know our company and employees in person and attend our presentations.

Taking part and becoming part of the energy transformation


Sustainable energy sources determine the market of the future. At Gassner, you will see the latest innovations and technologies in use. From wind power to photovoltaics, from solar power to solar thermal energy, from biomass to combined heat and power plants (CHP) powered by biogas. We plan and install efficient, reliable and clean energy generation methods. And we primarily do this using biomass and geothermal applications.

In particular, joining the Alois Müller Group enabled us to complete numerous medium-scale and large-scale projects with successful participation in the energy concept.

We are also benefiting from the energy-self-sufficient production hall built in Ungerhausen. This enabled us to increase the amount of prefabrication and thereby offer our customers significantly higher quality.

You will be in good hands here – even as time goes on. The industry offers a wide range of applications that are becoming increasingly more important: Health, environmental protection and energy (cost) efficiency. There are still plenty of steps to be taken in the transition to energy-saving technologies.

Image GoGreen. Three Alois Müller trainees on the lawn.