The DIAG Group

DIAG itself and through its subsidiaries is a future-oriented industrial service provider in an international working environment, exploring development opportunities in selected markets, organizing partnerships and cooperations for new business models and project business all over the world. Its particular expertise lies in the areas of oil & gas, renewable energies, mining and infrastructure. In recent years, DIAG has expanded its portfolio in the fields of aviation, pharmaceuticals and medical technology and is also exploring business approaches relating to hydrogen technologies.

On this basis, we have an excellent platform, agile structures, an overview of the latest technologies and will make strategic investments in companies in order to continuously expand our portfolio.

With DIAG as your employer, you will benefit from a modern working environment combined with years of experience in building and developing business models and a focus on project development and execution. Successful references and specialist know-how make us and you absolute experts.

Your areas of application

We would like to develop into a central point of contact for national and international companies in the old economy and young companies. We will continue to draw on our experience in business and project development, project management and global purchasing in the international project business. It is no longer enough to build plants in emerging industrial sectors. The service, maintenance and revamp of industrial plants to increase efficiency, reduce energy consumption and emissions is becoming increasingly important.
Does your heart also beat for sustainable technologies, clever service companies or economic trends?

At DIAG you have the chance to prove yourself beyond our core business areas.

We are constantly on the lookout for entrepreneurial personalities who see the added value of investment transactions in order to continuously strengthen and develop DIAG through various business models. In this way, you can help existing companies to develop, build and scale their business models – partnership is a top priority at DIAG.


  • An international working environment
  • Knowledge transfer in your area of expertise
  • Working with or in the country of origin
  • Permanent employment contracts
  • Compension for overtime
  • Flextime and home office
  • Education and traning programs
  • Modern IT equipment for private use
  • Attractive mobility offers
  • 30 days vacation
  • Attractive work locations
  • Our corporate culture

A strong team

We are looking for employees who have an entrepreneurial mindset, who are experienced on the one hand and who wish to continuously develop their personal and professional strengths on the other.

Due to our many years of experience, DIAG sees itself as a partner to both customers and employees, which means that we strive to work with you to develop any missing knowledge and to grow as a team.

If you are interested in projects abroad, would like to develop yourself or gain experience with new business partners, or even if you come from abroad, want to gain a foothold in Germany and build up business with your home country, then you have come to the right place.

Our corporate culture

Working independently

Our employees contribute to the company’s success. We place great value on performance, maturity, independence and entrepreneurial thinking. Flat hierarchies enable us to make important decisions quickly and easily.

Kontinuierliche Verbesserung

DIAG ist daran interessiert, dass jede Person sein Know-How und seine Ideen einbringt, sodass wir unsere Prozesse und Abläufe effizient und qualitativ hochwertig gestalten können. Dazu gehört auch das Hinterfragen von bestehenden Prozessen und Strukturen. Wir sind offen gegenüber Vorschlägen, Ideen, Feedback und Optimierungen.


For us, the performance contribution of our employees is an essential component of the company’s success and therefore forms the basis of our partnerships.

It is particularly important to DIAG that not only high-quality services are provided, but also that sufficient rest is taken to ensure a good work-life balance.

Joint activities

We enjoy spending time together in a relaxed atmosphere.

During joint activities or team-building events, we strive to emphasize the joy of working together.

Personal development

DIAG is interested in developing its own employees into TOP trained specialists. Through various collaborations with universities of applied sciences or online learning platforms, we want to support our employees in their further training and offer individual support in this regard.

Unsolicited application

We are always on the lookout for new talent.

Simply send us your speculative application and CV and we will get back to you as soon as possible.

Please send inquiries by e-mail to Martin Wiechers:

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