Dual Studies Bachelor of Engineering (B.Eng.)
for energy and building technology (m/f/d)

Why you are right with us

Apply to us and become a dual student of the Bachelor of Engineering in Energy and Building Technology in order to further develop your technical knowledge in a future-oriented area.


With us you will work in a motivated team, realize exciting projects and gain practical experience in order to find a successful start to your professional career.

When does it start?
  • August 01, 2025
What to do?
  • Understand holistic plant engineering
  • Negotiations with authorities and companies
  • Development of profitability analysis and planning proposals
  • Coordination and control of assembly and cooperation on the construction site
  • Testing, maintenance and optimization of technical supply plants and systems
  • Installation of hydraulic components
  • Assembly and installation of sanitary fixtures
How is the study going?
  • 4,5 years duration (practical phases, inter-company courses + 9 semester study phase)
  • Specialization in one field of study
  • Prospects for specialist and managerial positions
  • course at the Cologne University of Applied Sciences
  • Opportunities for a master's degree
What do we expect from you?
  • Technical college entrance qualification (school or practical part) or Abitur
  • Skilled craftsmanship
  • Careful, precise way of working
  • Technical understanding and enthusiasm
  • Teamwork
What do we offer you?
  • Interesting and varied major projects
  • Good chances of being hired after your studies
  • External training courses
  • Excellent training opportunities
  • Good professional support

Our external HR department PERSONAL CHECK is at your disposal to clarify initial questions Mrs. Nieke Arendt under +0172 - 624 7888 to disposal. We will check your documents and get back to you within a week for an initial interview (online). If everything goes well, you will then have an on-site interview with the management within 8-10 days.

#Future

Join the Wilhelm Theis GmbH team in 4 steps

01

Application

We have successfully received your application. You will receive a confirmation of receipt within 24 hours

02

Video Interview

We look forward to getting to know you in a first video interview. We are supported in this by our external HR specialist Nieke Arendt PERSONAL CHECK.

03

on-site call

In the next step, we will invite you to our company for an introductory meeting. You have the opportunity to get to know us better as a company and team and gain insights into our everyday work.

04

Setting

Welcome to the Wilhelm Theis GmbH team. Your colleagues will introduce you to the world of technical building equipment and customers from day one. We attach great importance to ensuring that you feel really comfortable from your first day working with us.

Frequently asked questions and answers - FAQ

How do I apply to Wilhelm Theis GmbH? 

Various options are available to you here. The easiest is the application process on our website. You are also welcome to email us your application documents bewerbung@theis-gmbh.de send or via the old-fashioned postal route. 

Which documents should my application contain? 

We would like to know what drives you and whether you fit in with us. You are welcome to communicate this in a short email or in a short cover letter. Furthermore, we are of course interested in your previous career and any practical experience you may have and look forward to receiving your CV. On top of that, you are welcome to attach your most recent certificate to your documents. 

How does the application process work? 

We begin the application process in the fall of the year before you begin your studies. Send us your application and we will contact you by phone or email within a few days.


We conduct an initial introductory meeting online as a video interview. If it suits both sides, the next step is a personal meeting on site. 


We also offer taster and practice days. During the practical days, you will get to know the company, everyday work and the team better, and you can see whether we are a perfect match for you. 

By when do I have to apply for a dual study program? 

As a rule, we publish our open study places in the year before the start of your studies so that you can apply directly.

The dual study program begins as follows:

Beginning July 01st

  • Dual studies Bachelor of Sciences (B. Sc.) - Business Administration / Clerk for office management (m/f/d)

Beginning August 01st

  • Dual studies Bachelor of Engineering (B. Eng.) - supply engineering or energy and building technology / technical system planner TGA, heating and sanitary (m/f/d)
  • Dual studies Bachelor of Engineering (B. Eng.) - supply engineering or energy and building technology / plant mechanic SHK (m/f/d)

Which study locations are there for the practical and theoretical part? 

Dual studies Bachelor of Sciences (B. Sc.) - Business Administration / Clerk for office management (m/f/d)

  • Practice: Company location Bad Marienberg
  • Theory: Koblenz vocational school and Koblenz University

Dual studies Bachelor of Engineering (B. Eng.) - supply engineering or energy and building technology / technical system planner TGA, heating and sanitary (m/f/d)

  • Practice: Company location Bad Marienberg
  • Theory: Betzdorf vocational school and Nuremberg Technical University or Cologne University

Dual studies Bachelor of Engineering (B. Eng.) - supply engineering or energy and building technology / plant mechanic SHK (m/f/d)

  • Practice: Company location Bad Marienberg and large construction sites
  • Theory: Betzdorf vocational school and Nuremberg Technical University or Cologne University

How long does the dual study course last?

Training period 3,5 years

  • Dual studies Bachelor of Sciences (B. Sc.) - Business Administration / Clerk for office management (m/f/d)

Training period 4,5 years

  • Dual studies Bachelor of Engineering (B. Eng.) - supply engineering or energy and building technology / technical system planner TGA, heating and sanitary (m/f/d)
  • Dual studies Bachelor of Engineering (B. Eng.) - supply engineering or energy and building technology / plant mechanic SHK (m/f/d)

Does your product have a target audience? Does it have benefits? Then you can and should explain those benefits to your target audience on a page like this.

How is the remuneration in the individual apprenticeship years?

Bachelor of Sciences (B. Sc.) – Business Administration

Bachelor of Engineering (B. Eng.) – Supply technology or energy and building technology / technical system planner TGA, heating and plumbing (m/f/d)

Bachelor of Engineering (B. Eng.) – Supply technology or energy and building technology / system mechanic SHK (m/f/d)

  • 1st year 950,00 EURO
  • 2nd year: EUR 1.000,00
  • 3nd year: EUR 1.050,00
  • 4st year 1.100,00 EURO
  • 1st year 950,00 EURO
  • 2nd year: EUR 1.000,00
  • 3nd year: EUR 1.050,00
  • 4nd year: EUR 1.100,00
  • 5nd year: EUR 1.100,00
  • 1nd year: EUR 950,00
  • 2nd year: EUR 1.000,00
  • 3nd year: EUR 1.050,00
  • 4nd year: EUR 1.100,00
  • 5nd year: EUR 1.100,00

What are the chances of being taken on after completing your studies? 

We not only train, we also teach our specialists (m/f/d) of tomorrow.
And it is important to be able to use this optimally in the company even after the dual study program.

Do I need a specific school-leaving certificate? 

For the dual study programs you need the (technical) Abitur.

What does the support look like during the dual study program? 

We have trained instructors for every area who will support you throughout your entire study period. In addition, there are dedicated contacts in the departments who will support you.

Will I be supported with special benefits during the dual study program? 

  • All our employees benefit from many special services, such as the subsidy for private supplementary health insurance, the possibility of e-bike leasing, on-site support from a physiotherapist and much more.
  • We provide our commercial employees and dual students with high-quality work clothing.
  • As an employer, we also cover the tuition and course fees as well as the costs for study books

What training opportunities do you offer? 

Of course, you can continue your education after your dual studies and continue to grow in our company. There are many different options depending on the profession, including:

  • Financial accountant (m/f/d)
  • Accountant (m/f/d)
  • Master (m/f/d)
  • Technician (m/f/d)
  • Bachelor / Master / PhD student (m/f/d)
  • Business economist (m/f/d)

How many study places are advertised each year? 

Because we train based on needs, our offerings vary. You can view the current open dual study programs on our website at any time.

Is there information about the curriculum (Business Administration)?

you interestAre you interested in our dual study programs? We have compiled comprehensive information for you here

Dual studies Bachelor of Science (B. Sc.) - Business Administration / Clerk for office management (m/f/d):

In our innovative course, we combine an economics degree with practice-oriented commercial trainingnn/office management clerk. Within 3,5 years you will obtain two qualifications: the IHK qualification as a clerk for office management after 2,5 years and the renowned Bachelor of Science in Business Administration.


With us, the cooperation between vocational school, university and our company is perfectly coordinated. You benefit from long-term tried-and-tested cooperation and an optimal course of study. Our schedule is well thought out: Here you can take a look at the course of study in detail. With us you will be deployed in various areas of the company: including purchasing, accounting and costing. You will also have the opportunity to visit construction sites and gain valuable practical insights.


Your training with us opens the door to a wide range of career opportunities. You can specialize in areas such as accounting, costing, marketing, purchasing or quality management. Your own ideas are expressly desired by us and you have the chance to put them into practice.



Dual degree Bachelor of Engineering and training as a plant mechanic (m/f/d) or technical system planner (m/f/d):


With us you have two training options to choose from: Become either a plant mechanic (m/f/d) or a technical system planner (m/f/d) - both in combination with our dual study program Bachelor of Energy and Building Technology.


After 2,5 years you will achieve your training qualification, after 4,5 years your degree. You complete the vocational school in the first year. Here you benefit from close supervision in a special vocational school class for dual students. From the second year you alternate between theoretical phases at the university of applied sciences and practical phases in the company. You can apply your knowledge from the theory phases from October to January and from March to July directly in practice.


Engineering-related activities await you during your practical semester in the fourth year. That means real projects, real responsibility and real insights - an ideal opportunity to expand your skills.


After completion, there are many opportunities to bring your potential to us. It doesn't matter whether you want to use your skills as a senior fitter, project manager, commissioning engineer or in the field of technical system planning - with us you will find the space to develop further and take on responsibility.